Amana VCA Operating instructions

RS6200003 Rev 1
July 2001
Model and Manufacturing
numbers listed on pages 4 & 5
This manual is to be used by qualified HVAC
technicians only. Amana does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.
Service
Instructions
VCA, RCA, RCB, RCC, & RCE Model Remote Coolers
RHA, RHD, RHE & RHF Model Remote Heat Pumps
Blowers, Coils, & Accessories
Heating
Comfort. Quality. Trust.
®
&Air Conditioning

IMPORTANT INFORMATION
Pride and workmanship go into every product to provide our customers with quality products. It is possible, however,
that during its lifetime a product may require service. Products should be serviced only by a qualified service
technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools,
parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE
APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS
DANGER - Immediate hazards which WILL result in
severe personal injury or death.
WARNING - Hazards or unsafe practices which COULD
result in severe personal injury or death.
CAUTION - Hazards or unsafe practices which COULD
result in minor personal injury or product or property damage.
2 Rev 1
DANGER
WARNING
CAUTION
INDEX
PRODUCT IDENTIFICATION ............................................................................... 4-6
PRODUCT DESIGN .............................................................................................. 7-8
SYSTEM OPERATION .......................................................................................... 9-12
ACCESSORIES
Cooling ......................................................................................................... 13-14
Heat Pump ................................................................................................... 1
Blowers and Coils ........................................................................................ 16-17
SCHEDULED MAINTENANCE ............................................................................. 18
SERVICING ........................................................................................................... 18-49
ACCESSORIES WIRING DIAGRAMS .................................................................. 0- 2
WIRING SCHEMATICS ........................................................................................ 3- 7

3 Rev 1
IF REPAIRS ARE ATTEMPTED BY UNQUALIFIED PERSONS, DANGEROUS
CONDITIONS (SUCH AS EXPOSURE TO ELECTRICAL SHOCK) MAY RE-
SULT. THIS MAY CAUSE SERIOUS IN URY OR DEATH.
AMANA WILL NOT BE RESPONSIBLE FOR ANY IN URY OR PROPERTY
DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES.
IF YOU PERFORM SERVICE ON YOUR OWN PRODUCT, YOU ASSUME RESPONSIBILITY FOR ANY
PERSONAL IN URY OR PROPERTY DAMAGE WHICH MAY RESULT.
To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this
product. For further assistance, please contact:
CONSUMER INFORMATION LINE
AMANA TOLL FREE
1-877-254-4729 (U.S. only)
email us at: hac.consumer[email protected]
fax us at: (931) 438- 4362
(Not a technical assistance line for dealers.)
Outside the U.S., call 1-931-433-6101.
(Not a technical assistance line for dealers.)
Your telephone company will bill you for the call.
IMPORTANT INFORMATION
SYSTEM CONTAMINANTS, IMPROPER SERVICE PROCEDURE AND/OR PHYSI-
CAL ABUSE AFFECTING HERMETIC COMPRESSOR ELECTRICAL TERMINALS
MAY CAUSE DANGEROUS SYSTEM VENTING.
System contaminants, improper Service Procedure and/or physical abuse affecting hermetic compressor electrical
terminals may cause dangerous system venting.
The successful development of hermetically sealed refrigeration compressors has completely sealed the compressor's
moving parts and electric motor inside a common housing, minimizing refrigerant leaks and the hazards sometimes
associated with moving belts, pulleys, or couplings.
Fundamental to the design of hermetic compressors is a method whereby electrical current is transmitted to the compressor
motor through terminal conductors which pass through the compressor housing wall. These terminals are sealed in a
dielectric material which insulates them from the housing and maintains the pressure tight integrity of the hermetic
compressor. The terminals and their dielectric embedment are strongly constructed, but are vulnerable to careless
compressor installation or maintenance procedures and equally vulnerable to internal electrical short circuits caused by
excessive system contaminants.
In either of these instances, an electrical short between the terminal and the compressor housing may result in the loss of
integrity between the terminal and its dielectric embedment. This loss may cause the terminals to be expelled, thereby
venting the vaporous and liquid contents of the compressor housing and system.
A venting compressor terminal normally presents no danger to anyone providing the terminal protective cover is properly
in place.
If, however, the terminal protective cover is not properly in place, a venting terminal may discharge a combination of
(a) hot lubricating oil and refrigerant
(b) flammable mixture (if system is contaminated with air)
in a stream of spray which may be dangerous to anyone in the vicinity. Death or serious bodily injury could occur.
Under no circumstances is a hermetic compressor to be electrically energized and/or operated without having the terminal
protective cover properly in place.
See Service Section S-17 for proper servicing.
CAUTION
WARNING
WARNING

PRODUCT IDENTIFICATION
4 Rev 1
This section will identify the models that are covered and the changes per each model group from one release to
the next.
Model # Manufacturing # Description
RCA**A*A P1173301C-P1173313C
RCB**A*A P1205201C-P1205213C
RCB**A*B P1205301C-P1205314C
RCB**A*B P1218601C-P1218613C
RCB**B** P1223301C-P1223317C
P122338C-P1223314C
Remote Cooling (B) 11 Seer Outdoor Units. The "B" design series features 5/16"
diameter tubing cubed coil design for reduced system refrigerant charge and a
more compact footprint. Prepainted sheet metal and coil enhance finish durability
RCC**A*A P1172401C-P1172412C
RCC**A*A P1220701C-P1220705C
RCC**A*B P1172413C-P1172422C
RCC**A*B P1218501C-P1218510C
RCE**A*A P1218701C-P1218706C
Remote Cooling (E) 14 Seer Outdoor Units. Featuring new cubed coil design,
Copeland scroll compressors in all sizes, compressor sound blankets, and lower
speed fan motors for quiet operation.
VCB**A*A P1219201C-P1219207C
Vortex Cooling (B) 10 Seer outdoor units. Designed for the new construction
market. Similar to RCB line except for Grey sheet metal, unpainted coil, less
compressor crankcase heater, and pressure switches.
VCA**B2*
P1221301C-P1221303C
P1221314C-P1221318C
P1221320C-P1221326C
VCA**B3A P1221315C-P1221319C
P1221327C-P1221329C
RHA**A*A P1180201C-P1180213C
RHA**A*B P1180217C-P1180226C
RHA**A*B P1218801C-P1218813C
RHA**B** P1221501C-P1221509C
P1221510C-P1221518C
Remote Heat-pump (A) 10 Seer Outdoor Units. The "B" design series features
5/16" diameter tubing cubed coil design for reduced system refrigerant charge and
a more compact footprint. Prepainted sheet metal and coil enhance finish
durability
RHD**A*A P1188001C-P1188007C
RHE**A*A P1217401C-P1217407C
RHE**A*A P1219101C-P1219107C
RHE**A*B P1232201C-P1232207C
RHF**A2* P1239101C - P1239105C Remote Heatpump (F
) 14-15 Seer Outdoor Units. Featuring cubed coil design and
lower speed fan motors for quieter operation.
Vortex Cooling (B) 10 Seer outdoor units. Designed for the new construction
market. Similar to RCB**B*A line except for Grey sheet metal, unpainted coil, less
compressor crankcase heater, and pressure switches.
Remote Heat pump (A) 10 Seer Outdoor Units. Featuring new cubed coil design
and lower speed fan motors for quieter operation
Remote Heatpump (D/E) 13-14 Seer Outdoor Units. Featuring new cubed coil
design and lower speed fan motors for quieter operation.
Remote Cooling (A) 10 Seer Outdoor Units. Featuring new cubed coil design and
lower speed fan motors for quieter operation
Remote Cooling (C) 12 Seer Outdoor Units. Featuring new cubed coil design and
lower speed fan motors for quieter operation

PRODUCT IDENTIFICATION
5 Rev 1
This section will identify the models that are covered and the changes per each model group from one release to the next.
Model # Manufacturing # Description
BCA**TA002A P1177201C-P1177207C
B
lower
C
ooling
A
ir handler. One piece air handler with TXV Coil, PSC motor.
Not
for heat pump applications
BHA**FA002A P1180301C-P1180305C
BHA**TA002A P1180306C-P1180307C
BHA**TB002A P1188102C-P1188107C
BBA**A2A P1206401C-P1206404C
Blower (B) Multi position (A) Standard efficiency. Two piece blower coil
arrangement, matching coil is purchased separately. Features solid-state control
board which modulates electric heat elements to control discharge air temperature
for improved efficiency.
BBC**A*A P1206405C-P1206407C
Blower (B) Multi position (C) Variable Speed, High efficiency. Two piece blower
coil arrangement, matching coil is purchased separately. Features solid-state
control board which modulates blower speed and electric heat elements to control
discharge air temperature for additional efficiency.
BMA**F**A P1232301C - P1232307C
Blower Multi position (A) Standard efficiency. One piece air handler. Features
solid-state control board which controls electric heat elements, safety limit circuit,
and fan motor operation. The Fdesignator indicates flowrator coil.
CCA**FUA P1111001C-P1111007C
CCA**TCA P1178601C-P1178607C
CCA**TCB P1178701C-P1178710C
CHA**TUA P1124901C-P1124908C Coil Heat pump "A" coil. Similar to CCA**TUA coils, except for a check valve
circuit for heat-pump operation.
CCA**FCC P1203901C-P1203909C
CCA**FDC P1203910C-P1203913C
CCA36FKC P1203917C
CCA**FSC P1204001C-P1204009C
CHA**TCC P1203801C-P1203809C
CHA**TSC P1204101C-P1204109C
CCF**FCC P1210901C-P1210907C
CCF**FDC P1210908C-P1210910C
CHF**TCC P1210911C-P1210916C
CCH**FCC P1203301C-P1203306C
CCH**FCD P1210101C-P1210106C
CHH**TCC P1203501C-P1203506C
CHH**TCD P1210107C-P1210110C
Coil (C)Standard Efficiency Horizontal Slab coil. The (6th character) "F
" designator
indicates flowrator or orifice style coil. The (8th character or last letter), "C"
designator indicates the coil used "Aeroquip" style flowrator, "D" designator
indicates the coils use a "Chatliff" style orifice and allow for field installation of the
TXV**A kits.
Coil High Efficiency Horizontal Slab coil. The (6th character) "T" designator
indicates factory installed TXV valve. The (8th character or last letter), "C"
designator indicates the coil used "Sporlan" TXV valve, "D" designator indicates
the coils used a "Parker" TXV valve the same as the TXV**A kits.
Blower Heat-pump Air-handler. One piece air handler. FA designator includes
flowrator coil and PCS motor. TA designator features TXV coil and PSC motor.
TB
designator features TXV coil and variable speed (ECM) motor.
Coil High Efficiency "F" horizontal A coil or Coil (C)Standard Efficiency "F"
horizontal A coil. The (6th character) "F" designator indicates a flowrator coil, "T"
designator indicates a factory installed TXV. These coils use a "Chatleff" style
orifice and allow for field installation of the TXV**A kits.
Coil (C) Standard Efficiency "A" coil. The "F" designator (6th character) indicates
Flowrator. The (7th character) "C" designator indicates cased coil, "S" indicates
Stand Alone or uncased coil, "D" indicates wide bodied coil, and "K" indicates
extra wide or "King Size" coil. Similar to the CCA**FUA coils except these coils
use a "Chatleff" style orifice and allow for field installation of the TXV**A kits.
Coil High Efficiency "A" coil. The "T" designator (6th character) indicates factory
installed TXV valve. The (7th character) "C" designator indicates cased coil, "S"
indicates Stand Alone or uncased coil.
Coil Cooling "A" coil. The "F" designator (6th character) indicates Flowrator. The
"T" designator (6th character) indicates TXV valve device. The "U" or "C"
designator (7th character) indicates cased or uncased coil.

PRODUCT IDENTIFICATION
6 Rev 1
This section will identify the models that are covered and the changes per each model group from one release to the next.
Model # Manufacturing # Description
ASC01A P1200601C
Anti Short Cycle Kit. Kit contains a 3 minute off cycle timer to prevent short cycling of the
compressor. Factory installed in RCE, RHE units with scroll compressors. Also included in
PCK__A pressure control kits.
ATK05A P6443902C
Ambient Temperature Kit. Kit is designed for heat pump applications to prevent energizing
auxiliary electric heating elements when the ambient temperature is above set point. Also included
in FFK__A Fossil Fuel Kits.
CSB__A P1176802C - P1176809C Compressor Sound Blanket kit. Reduces the operation sound transmitted through the air by the
compressor. Factory installed in many of the higher efficiency models.
HSK__A P1180002C - P1180014C Hard Start Kit. Hard start kits dramatically increase the starting torque of compressors.
Recommended for use in systems which use TXV valves to control refrigerant flow.
FSK01A P1207101C (FS)Freeze Protection Kit. Installed on indoor coils, kit prevents compressor operation when coil
temperature drops below 32 degrees.
PCK__A P1180101C - P1180103C Pressure Control Kit. Kit includes hi and low pressure switches, necessary connectors, and anti
short cycle timer. Higher efficiency models have these components factory installed.
LAC__A P1180103C - P1180106C Low Ambient Control kit. Allows cooling operation in ambient temperatures between 50 degrees
and 32 degrees. This kit is for TXV systems only. Not designed for ambient below 32 degrees.
LSK01A P1206901C
Liquid line Solenoid Kit. This kit improves system efficiency and prevents compressor oil
migration in the off cycle. Recommended for installations where oil migration could occur.
Compressor must have a Hard Start Kit when this kit is used.
FFK__A P1122302C - P1122303C
Fossil Fuel Kit. Fossil fuel kits are designed for heat pump installations with gas or oil furnaces as
the back up or reserve heating system. The FFK02A will not function correctly on RHA__B_A heat
pumps. However, the FFK03A is backward compatible to all RHA, RHD or RHE heat pump
systems.
ROK__A P1208401C -P1208417C
Restrictor Orifice Kit. ROK01A contains an assortment of "Aeroquip" orifices. ROK49A - ROK98A
contain 3 ea. of "Chatleff" orifices, the kit number indicates the orifice size. See model/accessory
list for correct kit for specific coil model.
TXV__A P1206501C - P1206503C
P1234601C - P1234603C
Thermo-eXpansion Valve Kit. Improves the efficiency of restrictor orifice style coils. Valves are
heat pump compatible. See model/accessory list for correct kit for specific coil model
DSK01A P1187207C DiSconnect Kit. This kit is designed to be used with BCA/BHA air handlers with 5, 7, or 10 kW
electric heat only.
SPK__A P1208801C - P1208802C Single Point wiring K
it. Allows one single electrical connection for power for BBA/BBC air handlers
and auxiliary electric heater. SPK02A is a "six-pack" of SPK01A.
EHK__A P1187201C - P1187206C Electric Heat Kit. Auxiliary electric heat for BCA/BHA air handlers
EHK__B/C/D P1206301C - P1206307C
P1221601C - P1221607C Electric Heat Kit. Auxiliary electric heat for BBA/BBC air handlers
ECB__B/C/D P1206308C - P1206314C
P1221608C - P1221614C
Electric Heat Kit with Circuit Breakers. Auxiliary electric heat for BBA/BBC air handlers. Kit
includes circuit breakers for heaters.
EDB__A P1235001C - P1235005C Electric Heat "D" Series Kit with Circuit Breakers. Auxiliary electric heat for BMA air handlers. Kit
includes circuit breakers for heaters.
EDK__A P1234901C - P1234905C Electric Heat "D" Series Kit. Auxiliary electric heat for BMA air handlers
CCD__A_ P1203914C - P1203916C Coil Case Kit ("D" design series). Accessory coil case allows installer to add a case to Amana
Uncased up flow/down flow coils, "C" design series and later
DFL01/02 P1232901C - P1232902C Down FLow Kit. Contains coil brackets and drain pan for BMA air handlers installed in the down-
flow position
NHK01A P1235301C No Heat Kit. Contains wiring harness and electric heat blank off plate. Required when installing
the BMA without supplemental electric heat.

7 Rev 1
ACCESSORIES
x Available for this model ** Factory installed Not used in this application or not available
Model
Number
ASC01A
CSB02A CSB04A CSB05A CSB06A CSB08A CSB09A HSK02A HSK03A HSK04A HSK06A HSK10A HSK12A HSK13A
FSK01A
PCK01A
LAC01A LAC02A LAC03A LSK01A
Description
Anti Short Cycle Kit
Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket
Factory Installed Hard Start
Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit
Freeze Protection Kit
Pressure Control Kit
Low Ambient Control Low Ambient Control Low Ambient Control
Liquid Line Solenoid Kit
RCA/B18A2A
xx x xxx
RCA/B24A2A
xx xxxx
RCA/B30A2A
xx x xxx
RCA/B36A2A
xx x xxx
RCA/B42A2A
xx x xx x
RCA/B48A2A
xx x xx x
RCA/B60A2A
x
**
xxxx
RCA/B36A3A
xxx
RCA/B48A3A
xxx
RCA/B60A3A
**
xx
RCA/B36A3A
xxx
RCA/B48A4A
xxx
RCA/B60A4A
**
xx
RCB18A2B
xx x xxxx
RCB24A2B
x
**
xxxxxx
RCB30A2C
xx x xxxx
RCB30A2B
xxxxx
RCB36A2B
xx x xxxx
RCB42A2B
x
**
xxxxx
RCB48A2B
xxxxxx
RCB60A2B
x x xxxx x
RCB36A3B
xx
**
xx x x
RCB48A3B
x
**
xx x x
RCB36A4B
xxxx
RCB60A3B
x
**
xx x x
RCB48A4B
x xxx x
RCB60A4B
x xxx x
RCB18B2*
xx
**
xx x x
RCB24B2*
xx
**
xx x x
RCB30B2*
xx
**
xx x x
RCB36B2*
xx
**
xx x x
RCB42B2*
xx xxxxx
RCB48B2*
xx
**
xx x x
RCB60B2*
xx xxxxx
RCC18A2A
**
x
**
x
**
xx
RCC24A2A
**
x
**
x
**
xx
RCC30A2A
**
x
**
x
**
xx
RCC36A2A
**
x
**
x
**
xx
RCC42A2A
** ** **
x
**
xx
RCC48A2A
** ** **
x
**
xx
RCC60A2A
** ** **
x
**
xx

ACCESSORIES
8 Rev 1
x Available for this model ** Factory installed Not used in this application or not available
Model
Number
ASC01A
CSB02A CSB04A CSB05A CSB07A CSB08A CSB09A HSK02A HSK04A HSK06A HSK10A HSK11A HSK12A HSK13A HSK14A
FSK01A
PCK01A
LAC01A LAC02A LSK01A
Description
Anti Short Cycle Kit
Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket
Factory Installed Hard Start
Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit
Freeze Protection Kit
Pressure Control Kit
Low Ambient Control Low Ambient Control
Liquid Line Solenoid Kit
RCC36A3A xx
**
xx
RCC48A3A
**
x
**
xx
RCC60A3A
**
x
**
xx
RCC18A2B/D
**
x
**
x
**
xx
RCC24A2B/D
**
x
**
x
**
xx
RCC30A2B/D
**
x
**
x
**
xx
RCC36A2B/D
**
x
**
x
**
xx
RCC42A2B/D
** **
xx
**
xx
RCC48A2B/D
** ** **
x
**
xx
RCC60A2B/D
** **
xx
**
xx
RCC36A3B/D xx
**
xx
RCC48A3B/D
**
x
**
xx
RCC60A3B/D
**
x
**
xx
RCE24A2*
** **
xx
**
xx
RCE30A2*
** **
xx
**
xx
RCE36A2*
** **
xx
**
xx
RCE42A2*
** **
xx
**
xx
RCE48A2*
** **
xx
**
xx
RCE60A2*
** **
xx
**
xx
VCA18B2* xx x xxxx
VCA24B2* xx x xxxx
VCA30B2* x x xxx xx
VCA36B2* x x xxx xx
VCA42B2* xx x xx xx
VCA48B2* xx x xx xx
VCA60B2* xx x xx xx
VCA36B3* x xxx x
VCA48B3* x xxx x
VCA60B3* x xxx x
VCB18A2A xx x xxxx
VCB24A2A xx xxxxx
VCB30A2A xx x xxxx
VCB36A2A xx x xxxx
VCB42A2A xx x xxxx
VCB48A2A x
**
xxxxx
VCB60A2A x
**
xxxxx

9 Rev 1
ACCESSORIES
x Available for this model ** Factory installed Not used in this application or not available
Model
Number
ASC01A
ATK05A
CSB02A CSB04A CSB05A CSB07A CSB08A CSB09A HSK04A HSK06A HSK07A HSK08A HSK09A HSK10A HSK11A HSK12A
FSK01A
PCK02/03A
LAC03A
LSK01A
FFK02A FFK03A
Description
Anti Short Cycle Kit
Ambient Temperature Kit
Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket Compressor Sound Blanket
Factory Installed Hard Start
Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit Hard Start Kit
Freeze Protection Kit
Pressure Control Kit
Low Ambient Control
Liquid Line Solenoid Kit
Fossil Fuel Kit Fossil Fuel Kit
RHA18A2A
xx x x xxxxxx
RHA24A2A
xx x x xxxxxx
RHA30A2A
xx x x xxxxxx
RHA36A2A
xx x x xxxxxx
RHA42A2A
xx x x xxxxxx
RHA48A2A
xxx x xxxxxx
RHA60A2A
xxx **xxxxxx
RHA36A3A
x x xx xxx
RHA48A3A
xx xx xxx
RHA60A3A
xx xx xxx
RHA36A4A
x x xx xxx
RHA48A4A
xx xx xxx
RHA60A4A
xx xx xxx
RHA18A2B
xx x ** xxxxxx
RHA24A2B
xx x x xxxxxx
RHA30A2B
xx x x xxxxxx
RHA36A2B
xx x x xxxxxx
RHA42A2B
xx x x xxxxxx
RHA48A2B
xxx x xxxxxx
RHA60A2B
**xx xxxxxxx
RHA36A3B
x x xx xxx
RHA48A3B
xx xx xxx
RHA60A3B
xx xx xxx
RHA36A4B
x x xx xxx
RHA48A4B
xx xx xxx
RHA60A4B
xx xx xxx
RHA18B2*
xx x xxxx x
RHA24B2*
xx x xxxx x
RHA30B2*
xx x xxxx x
RHA36B2*
xx x xxxx x
RHA42B2*
xx x x xxxx x
RHA48B2*
xx x xxxx x
RHA60B2*
xx x xxxx x
RHA36B3*
xx x xxxx x
RHA48B3*
xx x xxxx x
RHA60B3*
xx x xxxx x

ACCESSORIES
10 Rev 1
x Available for this model ** Factory installed Not used in this application or not available
Model
Number
ROK01A
ROK49 TO 98A
TXV01A TXV02A TXV03A
FSK01A
Description
RESTRICTOR ORIFICE KIT RESTRICTOR ORIFICE KIT
Expansion Valve Kit Expansion Valve Kit Expansion Valve Kit
FREEZE PROTECTION KIT
CCH24FCC
X
X
CCH30FCC
X
X
CCH36FCC
X
X
CCH48FCC
X
X
CCH60FCC
X
X
CCH24FCD
X
X
X
CCH30FCD
X
X
X
CCH36FCD
X
X
X
CCH48FCD
X
X
X
CCH60FCD
X
X
X
CHH24TCC
X
CHH30TCC
X
CHH36TCC
X
CHH48TCC
X
CHH60TCC
X
CHH24TCD
X
CHH30TCD
X
CHH36TCD
X
CHH48TCD
X
CHH60TCD
X
Model
Number
ASC01A
ATK05A
CSB07A CSB08A CSB09A HSK10A HSK12A
FSK01A
PCK02/03A
LAC03A
LSK01A
FFK02A FFK03A
Description
Anti Short Cycle Kit
Ambient Temperature Kit
Compressor Sound Blanke
Compressor Sound Blanke
Compressor Sound Blanke
Hard Start Kit Hard Start Kit
Freeze Protection Kit
Pressure Control Kit
Low Ambient Control
Liquid Line Solenoid Kit
Fossil Fuel Kit.
Fossil Fuel Kit
RHD18
**
X
X X XXXXXX
RHD24
**
X
X X XXXXXX
RHD30
**
X
X X XXXXXX
RHD36
**
X
X X XXXXXX
RHD42
**
X
X X XXXXXX
RHD48
**
X
X XXXXXXX
RHD60
**
X
X XXXXXXX
RHE18
**
X
XXX
**
XXXX
RHE24
**
X
XXX
**
XXXX
RHE30
**
X
XXX
**
XXXX
RHE36
**
X
XXX
**
XXXX
RHE42
**
X
XXX
**
XXXX
RHE48
**
X
XXX
**
XXXX
RHE60
**
X
XXX
**
XXXX
RHF24
**
X
**
XX
**
XX X
RHF30
**
X
**
XX
**
XX X
RHF36
**
X
**
XX
**
XX X
RHF42
**
X
**
XX
**
XX X
RHF48
**
X
**
XX
**
XX X

11 Rev 1
ACCESSORIES
Model
Number
CCD16A22 CCD20A22 CCD24A26
ROK01A
ROK49 TO 98A
TXV01A TXV02A TXV03A
FSK01A
Description
ACCESSORY COIL CABINET ACCESSORY COIL CABINET ACCESSORY COIL CABINET
RESTRICTOR ORIFICE KIT RESTRICTOR ORIFICE KIT
Expansion Valve Kit Expansion Valve Kit Expansion Valve Kit
FREEZE PROTECTION KIT
CHA18T-C
X
X
X
CHA24T-C
X
X
X
CHA30T-C
X
X
X
X
CHA36T-C
X
X
X
CHA42T-C
X
X
X
X
CHA48T-C
X
X
X
CHA54T-C
X
X
X
CHA57T-C
X
X
X
CHA60T-C
X
X
X
CCA18F-C
X
X
X
X
CCA24F-C
X
X
X
X
CCA30F-C
X
X
X
X
X
CCA36F-C
X
X
X
X
CCA42F-C
X
X
X
X
X
CCA48F-C
X
X
X
X
CCA54F-C
X
X
X
X
CCA57F-C
X
X
X
X
CCA60F-C
X
X
X
X
CHF24T-C
X
CHF30T-C
X
CHF36T-C
X
CHF42T-C
X
CHRF48T-C
X
CHF60T-C
X
CCF18F-C
X
X
X
CCF24F-C
X
X
X
CCF30F-C
X
X
X
X
CCF36F-C
X
X
X
CCF42F-C
X
X
X
X
CCF48F-C
X
X
X
CCF60F-C
X
X
X
Model
Number
FSK01A
SPK01A SPK02A
DSK01A EHK05A EHK07A EHK10A EHK15A EHK20A EHK25A EHK30A
EHK05B/C/D EHK07B/C/D EHK10B/C/D EHK15B/C/D EHK20B/C/D EHK25B/C/D EHK30B/C/D
Description
Freeze Protection Kit
Single Piont Wiring Kit Single Piont Wiring Kit
Disconnect Kit
Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit
BBA24A2A XXX X XXXXX
BBA36A2A XXX X XXXXXX
BBA48A2A XXX X XXXXXXX
BBA60A2A XXX X XXXXXXX
BBC36A2A XXX X XXXXXXX
BBC60A2A XXX X XXXXXXX
BHA24TB X XXXXXXXX
BHA30TB X XXXXXXXX
BHA36TB X XXXXXXXX
BHA42TB X XXXXXXXX
BHA48TB X XXXXXXXX
BHA60TB X XXXXXXXX
x Available for this model ** Factory installed Not used in this application or not available
Model
Number
EDK05A EDK07A EDK10A EDK15A EDK20A EDB05A EDB07A EDB10A EDB15A EDB20A
DFL01 DFL02
NHK01A
TXV04A TXV05A TXV06A
Description
Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit Electric Heat Kit
Down-Flow Kit Down-Flow Kit
No Heat Kit
Expansion Valve Kit Expansion Valve Kit Expansion Valve Kit
BMA24F00A X X X X X X X X X
BMA30F00AXXXX XXXX X X X
BMA36F00AXXXXXXXXXX XX X
BMA42F00AXXXXXXXXXX XX X
BMA24F05A ** XX
BMA30F10A ** XX
BMA36F10A ** XX
BMA42F10A ** XX

PRODUCT DESIGN
12 Rev 1
This section gives a basic description of cooling unit
operation,itsvariouscomponentsandtheirbasicoperation.
Ensureyoursystemisproperlysized forheatgainandloss
according to methods of the Air Conditioning Contractors
Association (ACCA) or equivalent.
CONDENSING UNIT
Theseunitsaredesignedforfreeairdischarge. Condensed
air is pulled through the condenser coil by a direct drive
propellerfanandthendischargedfromthecabinettop. The
unit requires no additional resistance (i.e. duct work) and
should not be added.
The RHA, RHD, RHE, and RHF Remote Heat Pump con-
densingunitsaredesignedfor 208-230 dual voltage single
phaseapplications. Theunitsrangeinsizefrom1.5to5-ton
andhavearatingof10,12,13,and14SEER. TheRHAand
VHAmodelshavea10SEERrating,theRHDa12,theRHE
a 13 SEER rating, and the RHF a 14 SEER rating. The
actual system efficiency is dependent upon the unit and its
components. Refer to the "Technical Information" manual
oftheunit you are servicingfor further details. TheRHA 3-
,4-, and5-tonmodelsarealsoavailablefor230Vand 460V
applications.
TheRCA, RCB, RCC,VCA,and VCB Remote Condensing
Units are made in 1.5 through 5 ton sizes. RCE models are
availablein2through5tonsizes.Theyaredesignedfor208-
240voltsinglephaseapplications.TheRCA/RCB3,4,and
5ton models arealsoavailable for 230Vand 460V3phase
applications. The RCC 3, 4, and 5 ton models are also
available for 230V 3 phase applications.
Suction and Liquid Line Connections
Thesuctionandliquidlineconnectionsoftheunitaresetup
for field piping with refrigerant-type copper. Non-back
seatingvalveswerefactory-installedto accept the field-run
copper. The total refrigerant charge needed for a normal
installationisalso factory-installed. For additional refriger-
antlineset information, refer tothe "TechnicalInformation"
manual of the unit you are servicing.
Compressors
ManyoftheAmanaoutdoorunitsuseCopelandCompliant®
scroll compressors. There are a number of design charac-
teristics which differentiate the scroll compressor from the
reciprocating compressor. One is the scroll. A scroll is an
involute spiral which, when matched with a mating scroll
form, generates a series of crescent-shaped gas pockets
between the members (see following illustration). During
compression, one scroll remains stationary while the other
formorbits. This motion causestheresulting gas pocketto
compress and push toward the center of the scrolls. When
the center is reached, the gas is discharged out a port
located at the compressor center.

PRODUCT DESIGN
13 Rev 1
COILS AND BLOWER COILS
Amana CCA, CHA, CCH, CHH, CCF, and CHF coils are
designed to be installed with a furnace or air handler unit and
matched with Amana's condensing units to provide high
efficiency heating and cooling. Thermal expansion valves
on the CCA_T, CHA_T, CHH, and CHF coils and restrictor
orifices on the CCA_F, CCH, and CCF coils and BHA_F
blower coils give accurate refrigerant control and provide
reliable operation over a wide range of conditions.
Amana CCA and CHA "A" coils are designed for upflow and
counterflow operation. The CCH and CHH slab coils, and
the CCF and CHF cased "A" coils are designed for horizontal
applications.
The CCA*T, CHA*T, CHH, and CHF units along with BCA*T
blower cabinets include thermal expansion valves with
internal check valves for heat pump applications.
CCA30F*A and CCA60FUA coils have restrictors factory-
installed . The restrictor is sized from the matching 10 SEER
cooling application. Oversized-undersized coils and heat
pump applications will require a change in the restrictor.
Note: To avoid poor operation and/or equipment damage,
any single-phase reciprocating compressor used with an
expansion valve coil must include hard start components.
BBA and BBC blower cabinets are designed as a two-piece
blower coil. Either the BBA or BBC blower section can be
attached to a CCA*FC*, CHA*TC*, or CHF*TC* cased
evaporator coil. This two piece arrangement allows for a
variety of mix-matching possibilities providing greater flex-
ibility.
The BBC blower cabinet uses a variable speed motor that
maintains a constant airflow despite duct static. It is ap-
proved for applications with cooling coils of up to 0.8 inches
W.C. external static pressure and includes a feature that
allows airflow to be changed by ±1 %.
The BBC is intended to be used with a cased evaporator coil
and a condensing unit or heat pump. The blower section of
the cabinet can also be used as an electric furnace. The
electric heating elements are field-installed. Electric heater
kits (EHK-B and ECB_B) are available as sales accessories
for supplemental electric heat.
The BBA and BBC blower cabinets can be positioned for
upflow, counterflow, horizontal right or horizontal left opera-
tion. All units are constructed with R-4.2 insulation. In areas
of extreme humidity (greater than 80% consistently), the
installer should insulate the exterior of the blower with
insulation having a vapor barrier equivalent to ductwork
insulation, providing local codes permit.
The BHA-T coils are equipped with a thermostatic expan-
sion and check valve assembly for refrigerant metering. The
BHA-F coils are equipped with a restrictor orifice.
The coils are designed for upflow, counterflow, or horizontal
application, using two speed direct drive motors on the BHA-
FA & TA models, and ECM (variable speed) motor on the
BHA-TB models.
BMA air handlers are equipped with a solid state control
board which controls the fan, heater, and safety limit opera-
tions. The coils in the BMA air handler incorporate an
"Aeroquip" distributor with the orifice sized for RHA (11
SEER) outdoor unit. When matching this air handler with an
Amana cooling only condenser (RCB, RCC, RCE, or VCA)
or when over sizing/under sizing the air handler, the orifice
must be changed to match the outdoor unit. Increased
efficiency may be obtained by changing the orifice to a
thermostatic expansion valve system. TXV kits 04, 0 or 06
contain the appropriate "Sporlan" expansion device for the
BMA air handlers.

SYSTEM OPERATION
14 Rev 1
COOLING CYCLE
HEATING CYCLE
Indoor
Coil
Accumulator
Bi-Flow
Filter Dryer
Outdoor
Coil
Thermostatic
Expansion
Valve
Check Valve
Reversing Valve
(De-Energized)
Indoor
Coil
Accumulator
Bi-Flow
Filter Dryer
Outdoor
Coil
Thermostatic
Expansion
Valve
Check Valve
Reversing Valve
(Energized)

SYSTEM OPERATION
15 Rev 1
COOLING
The refrigerant used in the system is R-22. It is a clear,
colorless, non-toxic, non-irritating, and non-explosive liquid.
The chemical formula is CHCLF2. The boiling point, at
atmospheric pressure is -41.4°F.
A few of the important principles that make the refrigeration
cycle possible are: heat always flows from a warmer to a
cooler body. Under lower pressure, a refrigerant will absorb
heat and vaporize at a low temperature, the vapors may be
drawn off and condensed at a higher pressure and tempera-
ture to be used again.
The indoor evaporator coil functions to cool and dehumidify
the air conditioned spaces through the evaporative process
taking place within the coil tubes.
NOTE: The pressures and temperatures shown in the
refrigerant cycle illustrations on the following pages are for
demonstration purposes only. Actual temperatures and
pressures are to be obtained from the "Expanded Perfor-
mance Chart."
Liquid refrigerant at condensing pressure and tempera-
tures, (270 psig and 122°F), leaves the outdoor condensing
coil through the drier and is metered into the indoor coil
through the metering device. As the cool, low pressure,
saturated refrigerant enters the tubes of the indoor coil, a
portion of the liquid immediately vaporizes. It continues to
soak up heat and vaporizes as it proceeds through the coil,
cooling the indoor coil down to about 48°F.
Heat is continually being transferred to the cool fins and
tubes of the indoor evaporator coil by the warm system air.
This warming process causes the refrigerant to boil. The
heat removed from the air is carried off by the vapor.
As the vapor passes through the last tubes of the coil, it
becomes superheated, that is, it absorbs more heat than is
necessary to vaporize it. This is assurance that only dry gas
will reach the compressor. Liquid reaching the compressor
can weaken or break compressor valves.
The compressor increases the pressure of the gas, thus
adding more heat, and discharges hot, high pressure super-
heated gas into the outdoor condenser coil.
In the condenser coil, the hot refrigerant gas, being warmer
than the outdoor air, first loses its superheat by heat trans-
ferred from the gas through the tubes and fins of the coil. The
refrigerant now becomes saturated, part liquid, part vapor
and then continues to give up heat until it condenses to a
liquid alone. Once the vapor is fully liquefied, it continues to
give up heat which subcools the liquid, and it is ready to
repeat the cycle.
HEATING
The heating portion of the refrigeration cycle is similar to the
cooling cycle. By energizing the reversing valve solenoid
coil, the flow of the refrigerant is reversed. The indoor coil
now becomes the condenser coil, and the outdoor coil
becomes the evaporator coil.
The check valve at the indoor coil will open by the flow of
refrigerant letting the now condensed liquid refrigerant by-
pass the indoor expansion device. The check valve at the
outdoor coil will be forced closed by the refrigerant flow,
thereby utilizing the outdoor expansion device.
The restrictor orifice used with the CCA-F, CCH-F and BHA-
F coils will be forced onto a seat when running in the cooling
cycle, only allowing liquid refrigerant to pass through the
orifice opening. In the heating cycle it will be forced off the
seat allowing liquid to flow around the restrictor. A check
valve is not required in this circuit.
COOLING CYCLE
When the contacts of the room thermostat close making
terminals R to Y & G, the low voltage circuit of the trans-
former is completed. Current now flows through the mag-
netic holding coils of the compressor contactor (CC) and fan
relay (RFC).
This draws in the normally open contact CC, starting the
compressor and condenser fan motors. At the same time
contacts RFC close starting the indoor fan motor.
When the thermostat is satisfied, it opens its contacts,
breaking the low voltage circuit, causing the compressor
contactor and indoor fan relay to open, shutting down the
system.
If the room thermostat fan selector switch should be set on
the "on" position, then the indoor blower would run continu-
ous rather than cycling with the compressor.
RHA, RHD, RHE, & RHF models energize the reversing
valve thorough the "O" circuit in the room thermostat.
Therefore the reversing valve remains energized as long as
the thermostat subbase is in the cooling position. The only
exception to this is during defrost.
DEFROST CYCLE
The defrosting of the outdoor coil is jointly controlled by the
defrost timing board, defrost (30/60) control, and compres-
sor run time.
HEATING CYCLE
The RHA, RHD, RHE, & RHF model heat pumps use a
different control circuit than preceding heat pump models.
These models do not use a reversing relay to energize the
reversing valve. Also many previous models energized the
reversing valve off the "B" terminal on the thermostat, and all
previous models energized the reversing valve in the heat-
ing cycle.
The reversing valve on the RHA, RHD, RHE & RHF models
is energized in the cooling cycle thorough the "O" terminal on
the room thermostat.
These models have a 24 volt reversing valve coil. When the
thermostat selector switch is set in the cooling position, the
"O" terminal on the thermostat is energized all the time.
Care must be taken when selecting a room thermostat.
Refer to the installation instructions shipped with the product
for approved thermostats.

SYSTEM OPERATION
16 Rev 1
If electric heaters are utilized, a two stage heating and single
stage cooling thermostat should be used.
Should the second stage heating contacts in the room
thermostat close, the first stage of electric heat would
become energized. If additional electric heaters are used,
they would be controlled by the sequencer on the proceed-
ing heater. If installed, the electric heaters may be controlled
by outdoor thermostats.
BBA Standard Efficiency Blower Section
Sequence of Operation
BBA Cooling-Only Operations
The cooling operation is fairly straight forward. With the ther-
mostat in the FANAUTO position and a Y or G call,
the blower starts within three seconds. When the Y call is
satisfied, the blower will stay on until the supply tempera-
ture is greater than 6 °F or up to a maximum of forty-five
seconds, whichever occurs first.
BBA Electric Heat-Only Operations
As in the cooling-only operations, with the thermostat in the
FANAUTO position and a W2 or E call, the blower
starts within three seconds. The board then starts turning-
on banks of electric heat, one every ten seconds, until the
supply temperature reaches 90°F. If the W2 or E call has
not been satisfied within the next five minutes, the board
turns-on additional banks of heaters and increases the
minimum supply temperature from 90°F to 10 °F. If an
additional five minutes passes and the W2 or E call has
not been satisfied, the board will raise the minimum supply
temperature to 120°F and once again turns-on additional
banks of electric heaters.
Should the temperature at the thermistor go above 140°F,
the control logic will start turning off one bank of heaters
every ten seconds until the temperature falls below 140°F.
If the temperature climbs above 1 0°F, the control logic
turns off all electric heat. If the temperature goes above
170°F, probably due to a component failure, the control logic
turns off all power to the heaters and keeps the blower on
until the temperature falls below 90°F.
BBA Heat ump Only Operations
The control process for heat pump operations is very similar
to the electric heat only operations, with the thermostat in the
FANAUTO position and a Y call, the blower starts within
three seconds. When the Y call is satisfied, the blower will
stay on until the supply temperature is less than 90°F or up
to a maximum of forty-five seconds, whichever occurs first.
BBA Heat ump Operations with Back-up Electric Heat
The major difference when electric heat is added is that the
board can be preset for electric heat lockout and minimum
supply air temperatures of 8 °F, 90°F, 9 °F, or 100°F. This
discharge air temperature setting will be used to lock-out the
electric heaters as long as the heat pump cycle satisfies the
minimum supply air temperature.
Two conditions must exist for the electric heat to be acti-
vated:
1. The thermistor is sensing temperatures below the set
point with the heat pump heating operation, and
2. There is a W2 call.
So, if the heat pump cycle fails to satisfy the W2 call, the
board shifts to integrated heating operation which is just like
the electric heater only operation except that the initial
minimum supply air for the heat pump cycle plus the electric
heaters will be 10 °F instead of 90°F.
BBA Fan Idle Option
The control board has a special option for the BBA models.
The blower motor is wired for only one speed for heating and
cooling operations. Another tap for the motor can be used to
connect the lower or idle speed. With the thermostat in the
FANAUTO position, the board allows the motor to operate
at the lower speed during system off cycles for minimum
circulation air. When the thermostat is switched to the
FANON position, the blower motor will operate at the
higher cooling speed.
BBC High Efficiency Blower Section
Sequence of Operation
It is important to note that the operational logic for the
control board for the BBCs is different from the BBA
board, hence, they are not interchangeable.
The BBCs, like the BHA**TBs with the ECM variable speed
motor, use the variable speed to maintain constant CFM.
However, there is a new twist to the BBCs with the control
board logic that changes the CFM in response to over-
temperature and under-temperature conditions with help
from the discharge air temperature readings from the new
discharge air thermistor.
BBC Cooling-Only Operations
With the thermostat in the FANAUTO position and a Y
or G call, the blower ramps up to speed over a 30 second
period. The acceptable cooling operation temperature range
is 4 to 6 °F. If the supply air temperature is above the
acceptable range, 6 °F, the control logic decreases the
CFM, until the Y or G call is satisfied. Then, on the next
Y or G call the CFM will return to the preset level. If the
supply air temperature is below the acceptable range, 4 °F,
the control logic increases the CFM until the Y call is
satisfied. Then, on the next Y or G call the CFM will return
to the preset level. In both cases, the blower will stay on at
nominal CFM until the supply temperature is greater than
6 °F or up to a maximum of forty-five seconds, whichever
occurs first. At that time the motor will ramp the CFM down
over the next 30 seconds.

SYSTEM OPERATION
17 Rev 1
BBC Electric Heat-Only Operations
As in the cooling-only operations, with the thermostat in the
FANAUTO position and a W2 or E call, the first bank
of electric heat is energized as the blower ramps up to speed
over a 30 second period. The control logic continues turning-
on banks of electric heat, one every ten seconds, until the
supply temperature reaches a set point of 8 ° to 100°F. The
board will then keep all existing banks of electric heaters on
until the W2 or E call has been satisfied.
If the supply air temperature is above the upper limit of the
acceptable range, 140°F, the control turns off one bank of
heaters every 10 seconds until the temperature falls below
140°F. Should the temperature exceed 1 0°F, the control
logic will shut-off all electric heat and runs the fan continu-
ously until the temperature is back below 90°F.
BBC Heat ump Only Operations
The control process for heat pump operations is very similar
to the cooling only operations, with the thermostat in the
FANAUTO position and a Y call, the blower ramps up to
speed over 30 second period. The acceptable heating
operation temperature range is 90 to 10 °F. If the supply air
temperature is above the acceptable range (10 °F) the
control logic increases the CFM until the Y call is satisfied.
If the supply air temperature is below the acceptable range
(90°F) the control decreases the CFM. In either case the
airflow returns to the preset level on the next call for heating.
BBC Heat ump Operations with Back-up Electric Heat
The major difference when electric heat is added is that the
board can be preset for minimum supply air temperatures of
8 °F, 90°F, 9 °F, or 100°F. This discharge air temperature
setting will be used to lock-out the electric heaters as long as
the heat pump cycle satisfies the minimum supply air
temperature. If the heat pump cycle fails to satisfy the W2
call, the control will first decrease the airflow to try to obtain
the minimum supply temperature. If a lower airflow is unsuc-
cessful, the control board then returns to the preset airflow
level and shifts to integrated heating operation which is just
like the electric heater only operation except that the initial
minimum supply air for the heat pump cycle plus the electric
heaters will be 10 °F instead of 90°F. The control logic will
then operate as for the electric heat only operation.
BBC Manual Fan Operation
The control board has a special option for the BBC models.
When the thermostat is switched to the FANON position,
the blower motor will operate at either 0% or 100% of the
cooling speed. This is accomplished with the use of the "Low
Speed Manual Fan" jumper located just below the indicator
light on the control board. With the jumper in place (as
shipped) the blower will operate at 0% of the nominal
cooling speed selected. With the jumper removed the blower
will operate at 100% of the nominal blower speed selected.
BMA Air Handler
Sequence of Operation
BMA Cooling-Only Operations
The cooling operation is straight forward. With the thermo-
stat in the FANAUTO position and a Y or G call, the
blower will start in less than two seconds. When the Y call
is satisfied, the blower will stay on sixty seconds. Note: If
the BMA is installed in applications without any electric heat,
a "No Heat Kit" (NHK01A) must be installed.
BMA Electric Heat-Only Operations
As in the cooling-only operations, with the thermostat in the
FANAUTO position and a W2 call, the blower starts in
less than two seconds. The board will then turn-on one bank
of electric heat. A signal (24 volts) at "W2" will only turn on
the first bank of heaters. If the board receives a signal (24
volts) at W3, the board turns-on additional banks of heat-
ers, one every 10 seconds until all electric heat is energized.
If the "W2" and "W3" terminals are jumpered, or if the heat
input is on "W3" only, the board will energize the fan and one
bank of heat immediately and then energize one additional
bank of heat every 10 seconds until all available heat is
energized. If at any time the board senses an open limit, the
board will immediately turn off all electric and energize the
blower. When the thermostat is satisfied (W2/W3 signal
removed), the board will turn off one bank of electric heat
every 10 seconds until all electric heat is removed. The fan
will continue to operate for an additional 10 seconds after the
last bank of heat is turned off.
BMA Heat ump Only Operations
The control process for heat pump operations is very similar
to the electric heat only operations, with the thermostat in the
FANAUTO position and a Y call, the blower starts in less
than two seconds. When the Y call is satisfied, the blower
will continue to operate for 60 seconds.
BMA Heat ump Operations with Back-up Electric Heat
The control process for heat pump with back-up electric
heat operations is the same as heat pump only with the
following available options. When back-up electric heat is
added to a heat pump system, the board can be set to
energize only kW of heat in the defrost mode, and to
energize additional heat strips only when there is a signal (24
volts) from the "W2" terminal on the thermostat.

SCHEDULED MAINTENANCE
18 Rev 1
The owner should be made aware of the fact that, as with
any mechanical equipment the remote air conditioner re-
quires regularly scheduled maintenance to preserve high
performance standards, prolong the service life of the equip-
ment, and lessen the chances of costly failure.
In many instances the owner may be able to perform some
of the maintenance, however, the advantage of a service
contract, which places all maintenance in the hands of a
trained serviceman, should be pointed out to the owner.
WARNING
DISCONNECT POWER SUPPLY BEFORE SERVICING
ONCE A MONTH
1. Inspect the return filters of the evaporator unit and clean
or change if necessary. NOTE: Depending on opera-
tion conditions, it may be necessary to clean the filters
more often. If permanent type filters are used, they
should be washed with warm water, dried and sprayed
with an adhesive according to manufacturers recommen-
dations.
2. When operating on the cooling cycle, inspect the con-
densate line piping from the evaporator coil. Make sure
the piping is clear for proper condensate flow.
ONCE A YEAR
Qualified Service ersonnel Only
1. Clean the indoor and outdoor coils.
2. Clean the casing of the outdoor unit inside and out.
3. Motors used on Amana products are considered to be
permanently lubricated and do not require lubrication.
Most current motors no longer have oil ports on the
motors.
4. Manually rotate the outdoor fan and indoor blower to be
sure they run freely.
. Inspect the control panel wiring, compressor connections,
and all other component wiring to be sure all connec-
tions are tight. Inspect wire insulation to be certain that
it is good.
6. Check the contacts of the compressor contactor. If they
are burned or pitted, replace the contactor.
7. Using a halide or electronic leak detector, check all pip-
ing and etc. for refrigerant leaks.
8. Start the system and run a Cooling Performance Test.
If the results of the test are not satisfactory, see the "Ser-
vice Problem Analysis" Chart for the possible cause.
TEST E UIPMENT
Proper test equipment for accurate diagnosis is as essen-
tial as regular hand tools.
The following is a must for every service technician and ser-
vice shop:
1. Thermocouple type temperature meter - measure dry
bulb temperature.
2. Sling psychrometer- measure relative humidity and wet
bulb temperature.
3. Amprobe - measure amperage and voltage.
4. Refrigeration test cord - check compressors, motors, and
continuity testing.
Volt-Ohm meter - testing continuity, capacitors, and
motor windings.
6. Accurate Leak Detector - testing for refrigerant leaks.
7. High evacuation pump - evacuation.
8. Electric vacuum gauge, manifold, and high vacuum
hoses - to measure and obtain proper vacuum.
9. Accurate charging cylinder or electronic scale - mea-
sure proper refrigerant charge.
10. Inclined manometer - measure static pressure and pres-
sure drop across coils.
Other recording type instruments can be essential in solv-
ing abnormal problems, however, in many instances they
may be rented from local sources.
Proper equipment promotes faster, more efficient service,
and accurate repairs with less call backs.
COOLING & HEATING PERFORMANCE TEST
Before attempting to diagnose an operating fault, run a
Cooling and/or Heating Performance Test and apply the
results to the Service Problem Analysis Guide.
SERVICING

19 Rev 1
TROUBLE SHOOTING
Complaint No Cooling Unsatisfactory
Cooling
System
Operating
Pressures
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SYMPTOM
System will not start Compressor will not start - fan runs Compressor and Condenser Fan will not start Evaporator fan will not start Condenser fan will not start Compressor runs - goes off on overload Compressor cycles on overload System runs continuously - little cooling Too cool and then too warm Not cool enough on warm days Certain areas to cool others to warm Compressor is noisy Low suction pressure Low head pressure High suction pressure High head pressure
Test Method
Remedy
See Service Procedure Reference
Power Failure
x
Test Voltage S-1
Blown Fuse
x
x
x
Impact Fuse Size & Type S-4
Loose Connection
x
x
x
Inspect Connection - Tighten S-2
Shorted or Broken Wires
x
x
x
x
x
x
Test Circuits With Ohmmeter S-3
Open Overload
x
x
x
x
Test Continuity of Overloads S-17A
Faulty Thermostat
x
x
x
Test continuity of Thermostat & Wiring S-3
Faulty Transformer
x
x
Check control circuit with voltmeter S-4
Shorted or Open Capacitor
x
x
x
Test Capacitor S-15
Internal Overload Open
x
Test Continuity of Overload S-17A
Shorted or Grounded Compressor
x
x
Test Motor Windings S-17B
Compressor Stuck
x
x
Use Test Cord S-17C
Faulty Compressor Contactor
x
x
x
x
Test continuity of Coil & Contacts S-7, S-8
Faulty Fan Relay
x
Test continuity of Coil And Contacts S-7
Open Control Circuit
x
Test Control Circuit with Voltmeter S-4
Low Voltage
x
x
x
Test Voltage S-1
Faulty Evap. Fan Motor
x
x
Repair or Replace S-16
Shorted or Grounded Fan Motor
x
x
Test Motor Windings S-16
Improper Cooling Anticipator
x
x
x
Check resistance of Anticipator S-3
Shortage or Refrigerant
x
x
x
x
Test For Leaks, Add Refrigerant S-103
Restricted Liquid Line
x
x
x
x
Replace Restricted Part S-113
Undersized Liquid Line
x
x
x
Replace Line S-120
Undersized Suction Line
x
i
Replace Line S-120
Dirty Air Filter
x
x
x
x
i
Inspect Filter-Clean or Replace
Dirty Indoor Coil
x
x
x
x
i
Inspect Coil - Clean
Not enough air across Indoor Coil
x
x
x
x
i
Speed Blower, Check Dust Static Pressure S-200
Too much air across Indoor Coil
x
Reduce Blower Speed S-200
Overcharge of Refrigerant
x
x
x
x
x
Release Part of Charge S-114
Dirty Outdoor Coil
x
x
x
i
x
Inspect Coil - Clean
Noncondensibles
x
x
x
Remove Charge, Evacuate, Recharge S-115
Recirculation of Condensing Air
x
x
x
Remove Obstruction to Air Flow
Infiltration of Outdoor Air
x
x
x
Check Windows, Doors, Vent Fans, Etc.
Improperly Located Thermostat
x
x
Relocate Thermostat
Air Flow Unbalanced
x
x
Readjust Air Volume Dampers
System Undersized
x
x
Refigure Cooling Load
Broken Internal Parts
x
Replace Compressor
Broken Values
x
Test compressor Efficiency
S-104
Inefficient Compressor
x
x
x
Test Compressor Efficiency
S-104
High Pressure Control Open
x
Reset And Test Control
S-12
Unbalanced Power, 3PH
x
x
x
Test Voltage
Wrong Type Expansion Valve
x
x
x
Replace Valve
Expansion Valve Restricted
x
x
x
x
x
x
Replace Valve
Oversized Expansion Valve
x
x
Replace Valve
Undersized Expansion Valve
x
x
x
x
x
Repalce Valve
Expansion Valve Bulb Loose
x
x
Tighten Bulb Bracket
Inoperative Expansion Valve
x
x
x
Check Valve Operation
S-110
Loose Hold-down Bolts
x
Tighten Bolts
i
Heat Pump Mode Only

Servicing Section Index
S-1 CHECKING VOLTAGE ..................................................................................................................................... 21
S-2 CHECKING WIRING ........................................................................................................................................ 22
S-3 CHECKING THERMOSTAT, WIRING, AND ANTICIPATOR ............................................................................. 22
S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT ................................................................................ 22
S- CHECKING CYCLE PROTECTOR .................................................................................................................. 23
S-6 CHECKING TIME DELAY RELAY ..................................................................................................................... 23
S-7 CHECKING CONTACTOR AND/OR RELAYS .................................................................................................. 23
S-8 CHECKING CONTACTOR CONTACTS ........................................................................................................... 24
S-12 CHECKING HIGH PRESSURE CONTROL ...................................................................................................... 24
S-13 CHECKING LOW PRESSURE CONTROL ...................................................................................................... 2
S-14 CHECKING SCROLL COMPRESSOR DISCHARGE THERMOSTAT .............................................................. 2
S-1 CHECKING CAPACITOR ................................................................................................................................. 2
S-16 CHECKING FAN AND BLOWER MOTOR WINDINGS .................................................................................... 27
S-17 CHECKING COMPRESSOR WINDINGS ........................................................................................................ 27
S-18 TESTING CRANKCASE HEATER.................................................................................................................... 29
S-20 CHECKING DEFROST RELAY CONTACTS .................................................................................................... 29
S-21 CHECKING REVERSING VALVE AND SOLENOID ......................................................................................... 29
S-22 REVERSING VALVE REPLACEMENT ............................................................................................................. 30
S-23 DEFROST TIMER BOARD ............................................................................................................................... 30
S-24 TESTING DEFROST TIMER BOARD .............................................................................................................. 33
S-2 TESTING DEFROST CONTROL (30°/60°) ...................................................................................................... 3
S-40 BBA/BBC CONTROL BOARD OPERATION .................................................................................................... 3
S-41 BBC INTERFACE BOARD OPERATION .......................................................................................................... 36
S-42 BMA CONTROL BOARD OPERATION ............................................................................................................ 37
S-60 ELECTRIC HEATER......................................................................................................................................... 37
S-61 CHECKING HEATER FUSE LINK .................................................................................................................... 38
S-62 CHECKING HEATER ELEMENTS ................................................................................................................... 38
S-63 AMBIENT TEMPERATURE CONTROL ........................................................................................................... 38
S-64 LAC__A, LOW AMBIENT CONTROL ............................................................................................................... 39
S-6 PCK__A, PRESSURE CONTROL KIT & .......................................................................................................... 39
S-66 FFK02A & FFK03A, FOSSIL FUEL KITS .......................................................................................................... 40
S-100 REFRIGERATION REPAIR PRACTICE ........................................................................................................... 40
S-101 LEAK TESTING ................................................................................................................................................ 40
S-102 EVACUATION ................................................................................................................................................... 41
S-103 CHARGING ...................................................................................................................................................... 42
S-104 CHECKING COMPRESSOR EFFICIENCY ...................................................................................................... 43
S-10 THERMOSTATIC EXPANSION VALVE ............................................................................................................ 43
S-106 OVERFEEDING ............................................................................................................................................... 43
S-107 UNDERFEEDING ............................................................................................................................................. 44
S-108 SUPERHEAT .................................................................................................................................................... 44
S-109 CHECKING SUBCOOLING .............................................................................................................................. 4
S-110 CHECKING EXPANSION VALVE OPERATION ................................................................................................ 4
S-111 CAPILLARY TUBES/RESTRICTOR ORIFICES ............................................................................................... 4
S-113 CHECKING RESTRICTED LIQUID LINE ......................................................................................................... 46
S-114 OVERCHARGE OF REFRIGERANT ................................................................................................................ 46
S-11 NON-CONDENSABLES ................................................................................................................................... 46
S-116 COMPRESSOR BURNOUT ............................................................................................................................. 46
S-120 REFRIGERANT PIPING ................................................................................................................................... 47
S-200 DUCT STATIC PRESSURES AND/OR STATIC PRESSURE DROP ACROSS COIL ....................................... 1
S-201 AIR HANDLER EXTERNAL STATIC................................................................................................................. 1
S-202 COIL STATIC PRESSURE DROP .................................................................................................................... 1