Jenn-Air Luxury Series User manual

This manual is to be used by qualified appliance
technicians only. Maytag does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.
16021730
July 2002
Service
Service Manual for Jenn-Air® models
This Base Manual covers In egra ed
Side-by-Side Refrigera ors
Refer o individual Technical Shee for
informa ion on specific models.
Integrated
Side-by-Side
Refrigerators

16021730 Rev. 0 2
Pride and workmanship go into every product to provide our customers with quality products. t 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
!
WARNING
To avoid risk of serious injury or death, repairs should not be attempted by unauthorized personnel, dangerous
conditions (such as exposure to electrical shock) may result.
Maytag will not be responsible for any injury or property damage from improper service procedures. f performing
service on your own product, assume responsibility for any personal injury 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:
MAYTAG APPL ANCES SALES COMPANY OR U.S. and Canada 1-800-Jenn-Air
ATTN:Jenn-Air CA R ® Center CALL U.S. customers using TTY for deaf, hearing
P.O. Box 2370 impaired, call 1-800-688-2080
Cleveland, TN 37320-2370
f outside the United States contact:
MAYTAG APPL ANCES SALES COMPANY
ATTN: Jenn-Air CA R® Center
P.O. Box 2370
Cleveland, TN 37320-2370
Telephone: 1-800-Jenn-Air (1-800-536-6247)
Recognize Safet S mbols, Words, and Labels
DANGER
!
DANGER mmediate hazards which WILL result in severe personal injury or death.
WARNING
!
WARNINGHazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION
!
CAUTIONHazards or unsafe practices which COULD result in minor personal injury or product or property
damage.
Important Information
CAUTION
!

3 16021730 Rev. 0
Important Information .................................................... 2
Component Testing ....................................................... 4
Service Procedures ....................................................... 7
Service quipment ........................................................ 7
Drier Replacement ........................................................ 7
Refrigerant Precautions ................................................. 7
Line Piercing Valves ...................................................... 7
Open Lines ................................................................... 8
Dehydrating Sealed Refrigeration System ..................... 8
Leak Testing .................................................................. 8
Testing Systems Containing a
Refrigerant Charge ................................................... 8
Testing Systems Containing
No Refrigerant Charge ............................................. 8
Restrictions ................................................................... 8
Symptoms .............................................................. 8
Testing for Restrictions ........................................... 9
vacuation and Charging ............................................... 9
vacuation .............................................................. 9
Charging ................................................................ 10
Refrigerant Charge ................................................. 10
HFC134a Service Information ....................................... 11
Health, Safety, and Handling .................................. 11
Comparison of CFC12 and HFC134a Properties ..... 11
Replacement Service Compressor ................................12
Brazing ........................................................................ 12
Refrigerant Flow ...........................................................13
Cabinet Air Flow ...........................................................14
Ice and Water Flow Diagram ........................................ 15
Water Valves Diagram .................................................. 16
Troubleshooting Chart................................................17
System Diagnosis ........................................................20
Disassembly Procedures
Compressor Replacement ...................................... 23
Condenser Replacement ........................................ 24
vaporator Replacement ........................................ 25
Heat xchanger Replacement ............................... 27
Condenser Fan ...................................................... 28
Freezer Fan ...........................................................28
Fresh Food Fan .....................................................28
Defrost Heater ....................................................... 29
Drain Pan and Drain Tube Heater ........................... 30
Defrost Thermistor ................................................. 30
Auto Damper Stepper ............................................30
Ice & Water Fountain PC Board .............................30
Touch Fountain Board ............................................ 32
Fountain Bracket ................................................... 32
Ice Crusher Bin & Shelf..........................................33
Climate Zone Technolgy (CZT) ............................... 35
Climate Zone Bulb Upper ....................................... 36
Climate Zone Bulb Lower ....................................... 36
Cimate Zone Test ................................................... 37
Diagnostic Mode Procedures ................................. 38
Power Supply Diagnostics ..................................... 39
Diagnostic Control Mode ........................................ 40
Appendix A
Owners Manual ........ ........................................A-2
Appendix B
Installation Guide ................................................. B-2
Table of Contents

Component Testing
!WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
16021730 Rev. 0 4
Component Description Test Procedures
Variable Capacity
Compressor
When compressor electrical circuit is
energized the DC powered compressor
is started at high speed or 4500 RPM
down to 1600 RPM. For low speed from
the compressor PCB board.
Resistance test
1. Disconnect power to unit.
2. Remove leads from compressor terminals.
3. Set ohmmeter to lowest scale.
4. Check for resistance between any two terminals. Resistance should be equal
between any two terminals.
5. If either compressor winding reads open (infinite or very high resistance) or
dead short (0 ohms), replace compressor.
Ground test
1. Disconnect power to refrigerator.
2. Remove compressor leads and use an ohmmeter set on highest scale.
3. Touch one lead to compressor body (clean point of contact) and other probe
to each compressor terminal.
• If reading is obtained, compressor is grounded and must be replaced.
Operation test
If voltage and motor winding tests do not show cause for failure, perform the
following test:
1. Activate the Diagnostic test mode (See Diagnostic test mode section)
2. Activate Test mode #16 (which is High Speed for compressor)
3. Check the A/C voltage between pins 1 and 2 of JP10 (Voltage should be
approximately 2.3VAC)
4. Verify that line voltage is available to Compressor PCB at CNO1 between
pins 2 and 5 If AC voltage is there.
5. Check voltage at CNO5 at pins 1 and 6 voltage should read approximately
230VAC
6. Check Voltage at CNO5 at pins 1 and 3 voltage should read approximately
230VAC
7. Check Voltage at CNO5 at pins 3 and 6 voltage should read approximately
230VAC
8. The readings at all three above readings should be the same if not bad
PCB board
9. If voltage is the same suspect a failed compressor.

Component Testing
!WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
16021730 Rev. 05
Component Description Test Procedures
Condenser Condenser is a tube and fin construction
located in machine compartment.
Condenser is on high-pressure discharge
side of compressor. Condenser function
is to transfer heat absorbed by refrigerant
to ambient.
Higher-pressure gas is routed to
condenser where, as gas temperature is
reduced, gas condenses into a high-
pressure liquid state. Heat transfer takes
place because discharged gas is at a
higher temperature than air that is
passing over condenser. It is very
important that adequate airflow over
condenser is maintained.
Condenser is air cooled by condenser
fan motor. If efficiency of heat transfer
from condenser to surrounding air is
impaired, condensing temperature
becomes higher. High liquid temperature
means liquid will not remove as much
heat during boiling in evaporator as
under normal conditions. This would be
indicated by high than normal head
pressures, long run time, and high
wattage. Remove any lint or other
accumulation that would restrict normal
air movement through condenser.
From condenser the refrigerant flows into
a post condenser loop which helps
control exterior condensation on flange,
center mullion, and around freezer door.
Refrigerant the flows through the drier to
evaporator and into compressor through
suction line.
Leaks in condenser can usually be detected by using an electronic leak detector
or soap solution. Look for signs of compressor oil when checking for leaks. A
certain amount of compressor oil is circulated with refrigerant.
Leaks in post condenser loop are rare because loop is a one-piece copper tube.
For minute leaks
1. Separate condenser from rest of refrigeration system and pressurize
condenser up to a maximum of 235 PSI with a refrigerant and dry nitrogen
combination.
2. Recheck for leaks.
Refrigerator light
switch
Single pole, single throw switch
completes circuit for light when door is
open.
Check resistant across terminals.
Switch arm depressed
“NO” terminals Open
Switch arm up
“NO” terminals Closed
Thermostat Thermostat is in a series circuit with
terminal 2 of defrost timer, and defrost
heater. Circuit is complete if evaporator
fan motor operates when cold.
Controls the circuit from freezer
thermostat through defrost terminator to
defrost heater. Opens and breaks circuit
when thermostat senses preset high
temperature.
Test continuity across terminals.
With power off and evaporator coil below freezing, thermostat should show
continuity when checked with ohmmeter. See “Heater, evaporator (defrost)”
section for additional tests.
After defrost thermostat opens, thermostat remains open until end of defrost
cycle and refrigerator starts cooling again. Defrost thermostat senses a preset
low temperature and resets (closes).
WARNING
!
To avoid severe personal injury or death from sudden eruption of high
pressures gases, observe the following:
Protect against a sudden eruption if high pressures are required for leak
checking.
Do not use high-pressure compressed gases in refrigeration systems
without a reliable pressure regulator and pressure relief valve in the
lines.

Component Testing
!WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
16021730 Rev. 0 6
Drier Drier is placed at post condenser loop
outlet and passes liquefied refrigerant to
capillary.
Desiccant (20) 8 x 12 4AXH - 7 M>S> -
Grams
Drier must be changed every time the system is opened for testing or
compressor replacement.
NOTE: Drier used in R12 sealed system is not interchangeable with
drier used in R134a sealed system. Always replace drier in R134a
system.
Before opening refrigeration system, recover HFC134a refrigerant for safe
disposal.
1. Cut drier out of system using the following procedure. Do not unbraze drier.
2. Applying heat to remove drier will drive moisture into the system.
3. Score capillary tube close to drier and break.
4. Reform inlet tube to drier allowing enough space for large tube cutter.
5. Cut circumference of drier 1 ¼" below condenser inlet tube joint to drier.
6. Remove drier.
7. Apply heat trap paste on post condenser tubes to protect grommets from high
heat.
8. Unbraze remaining part of drier. Remove drier from system.
9. Discard drier in safe place. Do not leave drier with customer. If refrigerator is
under warranty, old drier must accompany warranty claim.
Evaporator Inner volume of evaporator allows liquid
refrigerant discharged from capillary to
expand into refrigerant gas.
Expansion cools evaporator tube and fin
temperature to approximately -20
° F
transferring heat from freezer section to
refrigerant.
Passing through suction line to
compressor, the refrigerant picks up
superheat (a relationship between
pressure and temperature that assures
complete vaporization of liquid
refrigerant) as the result of capillary tube
soldered to suction line.
Refrigerant gas is pulled through suction
line by compressor, completing
refrigeration cycle.
Test for leaks in evaporator with electronic leak detector or with soap solution.
Compressor oil is circulated with refrigerant; check for oil when checking for
leaks.
For minute leaks
1. Separate evaporator from rest of refrigeration system and pressurize
evaporator up to a maximum of 140 PSI with a refrigerant and dry nitrogen
combination.
2. Recheck for leaks.
Evaporator defrost
heater
Activated when Main control board
activates defrost mode or when forced in
Diagnostic mode.
Check resistance across heaters.
If resistance heater is open and should be replaced.
In diagnostic mode test # 11 Energize heater (the defrost system should draw
about 3 amps).
WARNING
!
To avoid death or severe personal injury, cut drier at correct location.
Cutting drier at incorrect location will allow desiccant beads to scatter. If
spilled, completely clean area of beads.
WARNING
!
To avoid severe personal injury or death from sudden erruption of
high pressurres gases, observe the following:
•Protect against a sudden eruption if high pressures are required
for leak checking.
•Do not use high pressure compressed gases in refrigeration
systems without a reliable pressure regulator and pressure relief
valve in the lines.

7 16021730 Rev. 0
Every time sealed HFC134a system is repaired, drier
filter must be replaced.
Cut drier ut f system by c mpleting the f ll wing
steps. D n t unbraze drier filter. Applying heat t
rem ve drier will drive m isture int system.
1. Sc re capillary tube cl se t drier and break.
2. Ref rm inlet tube t drier all wing en ugh space
f r large tube cutter.
3. Cut circumference f drier at 1-1/4", bel w
c ndenser inlet tube j int t drier.
4. Rem ve drier.
5. Apply heat trap paste n p st c ndenser tubes t
pr tect gr mmets fr m high heat.
6. Unbraze remaining part f drier. Rem ve drier
fr m system.
7. Discard drier in safe place. D n t leave drier with
cust mer. If refrigerat r is under warranty, ld
drier must acc mpany warranty claim.
Refrigerant Precautions
WARNING
!
T av id risk f pers nal injury, d n t all w
refrigerant t c ntact eyes r skin.
CAUTION
!
T av id risk f pr perty damage, d n t use
refrigerant ther than that sh wn n unit serial
number identificati n plate.
NOTE: All precauti nary measures rec mmended by
refrigerant manufacturers and suppliers apply
and sh uld be bserved.
Line Piercing Valves
Line piercing valves can be used f r diagn sis, but are
n t suitable f r evacuating r charging due t h les
pierced in tubing by valves.
NOTE: D n t leave line piercing valves n system.
C nnecti n between valve and tubing is n t
hermetically sealed. Leaks will ccur.
Service Procedures
Service Equipment
Listed bel w is equipment needed f r pr per servicing
f HFC134a systems. Verify equipment is c nfirmed
by manufacturer as being c mpatible with HFC134a
and ester il system.
Equipment must be exclusively used f r HFC134a.
Exclusive use f equipment nly applies t italic items.
Evacuation pump
Check with vacuum pump supplier t verify equipment
is c mpatible f r HFC134a. R binair, M del 15600
2 stage, 6 cubic feet per minute pump is
rec mmended.
Four-way manifold gauge set, with low loss hoses
Leak detector
Charging cylinder
Line piercing saddle valve
(Schr eder valves). Seals must be HFC134a and
ester il c mpatible. Line piercing valves may be used
f r diagn sis but are n t suitable f r evacuati n r
charging, due t minute h les pierced in tubing. D
n t leave mechanical access valves n system.
Valves eventually will leak. M lecules f HFC134a are
smaller than ther refrigerants and will leak where
ther refrigerants w uld n t.
Swagging tools
Flaring tools
Tubing cutter
Flux
Sil-Fos
Silver solder
Oil for swagging and flaring
Use nly part # R0157532
Copper tubing
Use nly part # R0174075 and # R0174076
Dry nitrogen
99.5% minimum purity, with -40°F r l wer dew p int
Crimp tool
Tube bender
icron vacuum gauge
Process tube adaptor it
Heat trap paste
ICI appliance grade HFC134a
Drier Replacement
Bef re pening refrigerati n system, rec ver HFC134a
refrigerant f r safe disp sal.
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
!
WARNING

16021730 Rev. 0 8
Open Lines
During any pr cessing f refrigerati n system, never
leave lines pen t atm sphere. Open lines all w water
vap r t enter system, making pr per evacuati n m re
difficult.
Dehydrating Sealed Refrigeration System
M isture in a refrigerat r sealed system exp sed t
heat generated by the c mpress r and m t r reacts
chemically with refrigerant and il in the system and
f rms c rr sive hydr chl ric and hydr flu ric acids.
These acids c ntribute t breakd wn f m t r winding
insulati n and c rr si n f c mpress r w rking parts,
causing c mpress r failure.
In additi n, sludge, a residue f the chemical reacti n,
c ats all surfaces f sealed system, and will
eventually restrict refrigerant fl w thr ugh capillary
tube.
T dehydrate sealed system, evacuate system (see
paragraph Evacuation).
Leak Testing
DANGER
!
T av id risk f seri us injury r death fr m vi lent
expl si ns, NEVER use xygen r acetylene f r
pressure testing r clean ut f refrigerati n
systems. Free xygen will expl de n c ntact with
il. Acetylene will expl de sp ntane usly when put
under pressure.
It is imp rtant t check sealed system f r refrigerant
leaks. Undetected leaks can lead t repeated service
calls and eventually result in system c ntaminati n,
restricti ns, and premature c mpress r failure.
Refrigerant leaks are best detected with halide r
electr nic leak detect rs.
Testing Systems Containing a Refrigerant Charge
1. St p unit perati n (turn refrigerat r ff).
2. H lding leak detect r expl ring tube as cl se t
system tubing as p ssible, check all piping, j ints,
and fittings.
NOTE: Use s ap suds n areas leak detect r cann t
reach r reliably test.
Service Procedures
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
!
WARNING
Testing Systems Containing No Refrigerant Charge
1. C nnect cylinder f nitr gen, thr ugh gauge
manif ld, t pr cess tube f c mpress r and liquid line
strainer.
2. Open valves n nitr gen cylinder and gauge manif ld.
All w pressure t build within sealed system.
3. Check f r leaks using s ap suds.
If a leak is detected in a j int, d n t t attempt t repair
by applying additi nal brazing material. J int must be
disassembled, cleaned and rebrazed. Capture refrigerant
charge (if system is charged), unbraze j int, clean
allparts, then rebraze.
If leak is detected in tubing, replace tubing. If leak is
detected in either c il, replace faulty c il.
Restrictions
Symptoms
Restricti ns in sealed system m st ften ccur at
capillary tube r filter drier, but can exist anywhere n
liquid side f system.
Restricti ns reduce refrigerant fl w rate and heat
rem val rate. Wattage dr ps because c mpress r is
n t circulating n rmal am unt f refrigerants.
C mm n causes f t tal restricti ns are m isture,
p rly s ldered j ints, r s lid c ntaminants. M isture
freezes at evap rat r inlet end f capillary tube. S lid
c ntaminants c llect in filter drier.
If restricti n is n l w side, sucti n pressure will be in a
vacuum and head pressure will be near n rmal.
If restricti n is n high side, sucti n pressure will be in
a vacuum and head pressure will be higher than n rmal
during pump ut cycle.
Refrigerati n ccurs n l w pressure side f partial
restricti n. There will be a temperature difference at the
p int f restricti n. Fr st and/ r c ndensati n will be
present in m st case at the p int f restricti n. Als ,
system requires l nger t equalize.
Slight r partial restricti n can give the same
sympt ms as refrigerant sh rtage including l wer than
n rmal back pressure, head pressure, wattage, and
warmer temperatures.
T tal restricti n n the discharge side f c mpress r,
when restricti n is between c mpress r and first half f
c ndenser, results in higher than n rmal head pressure
and wattage while l w side is being pumped ut.

9 16021730 Rev. 0
Service Procedures
!
WARNING
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
Testing for Restrictions
T determine if a restricti n exists:
1. Attach gauge and manif ld between sucti n and
discharge sides f sealed system.
2. Turn unit n and all w pressure n each side t
stabilize. Inspect c ndenser side f system. Tubing n
c ndenser sh uld be warm and temperature sh uld be
equal thr ugh ut (n sudden dr ps at any p int al ng
tubing).
 If temperature f c ndenser tubing is c nsistent
thr ugh ut, g t step 4.
 If temperature f c ndenser tubing dr ps suddenly at
any p int, tubing is restricted at p int f temperature
dr p (if restricti n is severe, fr st may f rm at p int
f restricti n and extend d wn in directi n f
refrigerant fl w in system). G t step 5.
3. Visually check system f r kinks in refrigerati n line
which is causing restricti n. C rrect kink and repeat
step 2.
4. Turn unit ff and time h w l ng it takes high and l w
pressure gauges t equalize:
 If pressure equalizati n takes l nger than 10
minutes, a restricti n exists in the capillary tube r
drier filter. G t step 5.
 If pressure equalizati n takes less than 10 minutes,
system is n t restricted. Check f r ther p ssible
causes f malfuncti n.
5. Rec ver refrigerant in sealed system.
NOTE: Bef re pening any refrigerati n system, capture
refrigerant in system f r safe disp sal.
6. Rem ve p wer fr m unit.
CAUTION
!
T av id risk f pers nal injury r pr perty damage,
take necessary precauti ns against high
temperatures required f r brazing.
7. Rem ve and replace restricted device.
8. Evacuate sealed system.
9. Charge system t specificati n.
NOTE: D n t use captured r recycled refrigerant in
Maytag units. Captured r recycled refrigerant
v ids any Maytag and/ r c mpress r
manufacturer's warranty.
NOTE: Charge system with exact am unt f refrigerant.
Refer t unit nameplate f r c rrect refrigerant
charge. Inaccurately charged system will cause
future pr blems.
Evacuation and harging
CAUTION
!
T av id risk f fire, sealed refrigerati n system must
be air free. T av id risk f air c ntaminati n, f ll w
evacuati n pr cedures exactly.
NOTE: Bef re pening any refrigerati n system, EPA
regulati ns require refrigerant in system t be
captured f r safe disp sal.
Pr per evacuati n f sealed refrigerati n system is an
imp rtant service pr cedure. Usable life and perati nal
efficiency greatly depends up n h w c mpletely air,
m isture and ther n n-c ndensables are evacuated
fr m sealed system.
Air in sealed system causes high c ndensing
temperature and pressure, resulting in increased p wer
requirements and reduced perf rmance.
M isture in sealed system chemically reacts with
refrigerant and il t f rm c rr sive hydr flu ric and
hydr chl ric acids. These acids attack m t r windings
and parts, causing premature breakd wn.
Bef re pening system, evap rat r c il must be at
ambient temperature t minimize m isture infiltrati n
int system.
Evacuation
T evacuate sealed refrigerati n system:
1. C nnect vacuum pump, vacuum tight manif ld set with
high vacuum h ses, therm c uple vacuum gauge and
charging cylinder as sh wn in illustrati n.
Evacuati n sh uld be d ne thr ugh I.D. pening f
tubes n t thr ugh line piercing valve.
2. C nnect l w side line t c mpress r pr cess tube.
3. C nnect high side line t drier/pr cess tube.
4. Evacuate b th simultane usly. With valve C and F
cl sed, pen all ther valves and start vacuum pump.

16021730 Rev. 0 10
Service Procedures
!
WARNING
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
Vacuum Pump
.6 cm Copper
Tubing
Compressor Compressor
Process
Tube
Charging Hose
Thermistor
Vacuum Gauge Low Side Gauge
E
Valve
B
D
Valve
High Side Gauge
Charging Hose
Drier/Process Tube
F
Valve
Charging
Cylinder
C
A
Equipment Setup F r Evacuati n And Charging
5. After c mp und gauge (l w side) dr ps t
appr ximately 29 inches gauge, pen valve C t
vacuum therm c uple gauge and take micr n reading.
NOTE: A high vacuum pump can nly pr duce a g d
vacuum if il in pump is n t c ntaminated.
6. C ntinue evacuating system until vacuum gauge
registers 600 micr ns.
7. At 600 micr ns, cl se valve A t vacuum pump and
all w micr n reading in system t balance. Micr n
level will rise.
 If in 2 minutes, micr n level stabilizes at 1000
micr ns r bel w, system is ready t be charged.
 If micr n level rises ab ve 1000 micr ns and
stabilizes, pen valve A and c ntinue evacuating.
 If micr n reading rises rapidly and d es n t stabilize,
a leak still exists in system.
Cl se valve A t vacuum pump and valve C t
vacuum gauge. Invert charging cylinder and pen
charging cylinder valve F t add partial charge f r
leak checking. With leak detect r, check manif ld
c nnecti ns and system f r leaks. After l cating
leak, capture refrigerant, repair leak, and begin at
step 1.
Charging
NOTE: D n t use captured r recycled refrigerant in
Maytag units. Captured r recycled refrigerant
v ids any warranty.
NOTE: Charge system with exact am unt f refrigerant.
Refer t unit serial plate f r c rrect refrigerant
charge. Inaccurately charged system will cause
future pr blems.
T charge system:
1. Cl se valves A t vacuum pump and C t vacuum
gauge and E t l w side manif ld gauge.
2. Set scale n dial-a-charge cylinder f r c rresp nding
HFC134a pressure reading.
3. Open valve F t charging cylinder and let exact
am unt f refrigerant fl w fr m cylinder int system.
Cl se valve.
L w side gauge pressure sh uld rise sh rtly after
pening charging cylinder valve as system pressure
equalizes thr ugh capillary tube.
If pressure d es n t equalize, a restricti n typically
exists at capillary/drier braze j int.
4. If pressure equalizes, pen valve E t l w side
manif ld gauge and pinch ff high side drier pr cess
tube.
5. Start c mpress r and draw remaining refrigerant fr m
charging h ses and manif ld int c mpress r thr ugh
c mpress r pr cess tube.
6. T check high side pinch- ff drier pr cess tube. Cl se
valve D t high side gauge. If high side pressure
rises, repeat high side pinch- ff and pen valve D.
Repeat until high side pinch- ff d es n t leak.
7. Pinch- ff c mpress r pr cess tube and rem ve
charging h se. Braze stub cl sed while c mpress r is
perating.
8. Disc nnect p wer. Rem ve charging h se and braze
high side drier pr cess tube cl sed.
9. Recheck f r refrigerant leaks.
Refrigerant harge
Refrigerant charge in all capillary tube systems is
critical and exact am unt is required f r pr per
perf rmance. Fact ry charges are sh wn n serial
plate.
NOTE: D n t use refrigerant ther than sh wn n serial
plate.

11 16021730 Rev. 0
Service Procedures
!
WARNING
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
HF 134a Service Information
HFC134a is alternative refrigerant f r CFC12. HFC134a
has an z ne depleti n p tential (ODP) fact r f 0.0
and a gl bal warming p tential (GWP) fact r f 0.27.
HFC134a is n t flammable and has acceptable t xicity
levels. HFC134a is n t interchangeable with CFC12.
There are significant differences between HFC134a and
CFC12 which must be c nsidered when handling and
pr cessing refrigerati n system.
Health, Safety, and Handling
Health, safety and handling c nsiderati ns f r
HFC134A are virtually n different than th se f r
CFC12.
Health, Safety, and
Handling CFC12 HFC134a
Allowable overall
exposure limit 1,000 ppm Same
Vapor exposure to skin No effect Same
Liquid exposure to skin Can cause frostbite Same
Vapor exposure to eye Very slight eye irritant Same
Liquid exposure to eye Can cause frostbite Same
Above minimum exposure
limit Can cause Asphyxiation, Tachycardia, and Cardia
Arrhythmias
Same
Safety and handling Wear appropriate skin
and eye protection. Use
with adequate
ventilation.
Same
Spill management Remove or extinguish
ignition or combustion
sources. Evacuate or
ventilate area.
Same
Fire explosion hazards May decompose if
contact with flames and
heating elements.
Container may explode
if heated due to resulting
pressure rise.
Combustion products
are toxic.
Same
Disposal procedures Recycle or reclaim. Same
Properties/Characteristics CFC12 HFC134a
Ozone Depletion Potential
(ODP) 1.0* 0.0*
Global Warming Potential
(GPW) 3.2* 0.27*
Molecular weight 121 102
Boiling point at 1 atmosphere -22°F (-30°C) -15°F (-
126°C)
Vapor pressure at 77°F
(25°C) 80 psig 82 psig
Liquid density at 77°F (25°C) 82 lb/ft375 lb/ft3
Flammability No No
High-side system operating
Pressure at 65°F (18°C) HFC134a approximately 3 psig higher than CFC12
Low-side system operating
Pressure at 65°F (18°C) HFC134a approximately 2 psig lower than CFC12
Comparison of CFC12 and HFC134a Properties
T minimize c ntaminati n, exercise extreme care
when servicing HFC134A sealed systems.
N trace f ther refrigerants is all wed in HFC134a
systems. Chl rinated m lecules in ther refrigerants
such as CFC12, etc. will lead t capillary tube plugging.
Ester il is used in HFC134a systems. D n t use
mineral il. HFC134a and mineral ils cann t be mixed.
If mineral ils were used in HFC134a systems, lubricant
w uld n t return t c mpress r and w uld cause early
c mpress r failure. If significant am unt f il has been
l st fr m c mpress r, replace il rather than adding il.
 Ester ils used in HFC134a systems are s
hydr sc pic that by the time an inadequate system
perf rmance is detected, il will be saturated with
m isture.
 CFC12 has much higher t lerance t system
pr cessing materials, such as drawing c mp unds, rust
inhibit rs, and cleaning c mp unds, than HFC134a.
Such materials are n t s luble in HFC134a systems. If
materials were t be washed fr m system surfaces by
ester ils, they c uld accumulate and eventually plug
capillary tube.
 Care must be taken t minimize m isture entering
HFC134a system. D n t leave c mpress r r system
pen t atm sphere f r m re than 10 minutes.
Excessive m isture in HFC134a system will react with
c mpress r il and generate acid.
 C mpress r must be replaced when perf rming l w side
leak repair.
Drier filter must always be replaced.

16021730 Rev. 0 12
Service Procedures
T av id risk f electrical sh ck, pers nal injury, r death, disc nnect electrical p wer s urce t unit, unless test
pr cedures require p wer t be c nnected. Discharge capacit r thr ugh a 10,000 hm resist r bef re attempting
t service. Ensure all gr und wires are c nnected bef re certifying unit as repaired and/ r perati nal.
!
WARNING
Important: Unbrazing drier filter fr m tubing will drive
m isture fr m desiccant and int system, causing
acids t f rm. D n t unbraze filter drier fr m tubing. If
CFC12 service drier was installed in HFC134A system,
drier c uld verl ad due t excessive m isture.
 HFC134a c mpatible c pper tubing, part #R0174075 (1/
4" O.D. X 18" length) and part #R0174076 (5/16" O.D. X
24" length) must be used when replacing tubing.
 Av id system c ntaminati n by using T werdraw E610
evap rating il, part # R0157532, when flaring,
swagging, r cutting refrigerati n tubing.
Replacement Service ompressor
HFC134a service c mpress rs will be charged with
ester il and pressurized with dry nitr gen. Bef re
replacement c mpress r is installed, pull ut 1 rubber
plug. A pop fr m pressure release sh uld be heard. If a
pop s und is n t heard, d n t use c mpress r.
P sitive pressure in c mpress r is vital t keep
m isture ut f ester il. D n t leave c mpress r pen
t atm sphere f r m re than 10 minutes.
Compressor Testing Procedures
WARNING
!
T av id death r severe pers nal injury, never use
xygen, air r acetylene f r pressure testing r clean
ut f refrigerati n system. Use f xygen, air, r
acetylene may result in vi lent expl si n. Oxygen
may expl de n c ntact with il and acetylene will
sp ntane usly expl de when under pressure.
Refer t Technical Data Sheet Temperature
Relati nship Chart f r perating watts, test p ints, and
temperature relati nship test f r unit being tested.
 Temperature testing is acc mplished by using 3 lead
therm c uple temperature tester in specific l cati ns.
Test p int T-1 is utlet n evap rat r c il and T-2 is
inlet. Test p int T-3 is sucti n tube temperature midway
between where armaflex ends and sucti n p rt f
c mpress r (appr ximately 12 inches fr m
c mpress r).
 Therm c uple tips sh uld be attached securely t
specified l cati ns.
 D n t test during initial pull down. All w ne ff cycle
r balanced temperature c nditi n t ccur bef re
pr ceeding with testing.
 Refrigerat r must perate minimum f 20 minutes after
therm c uples are installed.
 Turn c ntr l t c lder t btain required n time.
 Wattage reading must be rec rded in c njuncti n with
temperature test t c nfirm pr per perati n.
 Sucti n and head pressures are listed n Temperature
and Relati nship Chart. N rmally these are n t
required f r diagn sis but used f r c nfirmati n n
systems which have been pened.
Brazing
CAUTION
!
T av id risk f pers nal injury r pr perty damage,
take necessary precauti ns against high
temperatures required f r brazing.
Satisfact ry results require cleanliness, experience,
and use f pr per materials and equipment.
C nnecti ns t be brazed must be pr perly sized, free
f r ugh edges, and clean.
Generally accepted brazing materials are:
Copper to copper joints: SIL-FOS (all y f 15 percent
silver, 80 percent c pper, and 5 percent ph sph r us).
Use with ut flux. Rec mmended brazing temperature is
appr ximately 1400°F. Do not use for copper to steel
connection.
Copper to steel joints: SILVER SOLDER (all y f 30
percent silver, 38 percent c pper, 32 percent zinc). Use
with flu ride based flux. Rec mmended brazing
temperature is appr ximately 1200°F.
Steel to steel joints: SILVER SOLDER (see c pper
t steel j ints).
Brass to copper joints: SILVER SOLDER (see c pper
t steel j ints).
Brass to steel joints: SILVER SOLDER (see c pper
t steel j ints).

13 16021730 Rev. 0
Refrigerant Flow
Side by Side
Refrigerant Flow Diagram

16021730 Rev. 0 14
Cabinet Air Flow
Side by Side
Cabinet Air Flow Diagram

15 16021730 Rev. 0
Side by Side
Ice and Water Flow Diagram
Ice and Water Dispenser Diagram
Ice Maker 5/16" Water line
to Dispenser
1/4" Water Line
Water Coil
Secondary Water Valve
Water Filter
Primary Water Valve

16021730 Rev. 0 16
Water Valves Diagram
Bottom View
Back View
Primary Valve
Secondary Valve
Filter Head
Bypass

17 16021730 Rev. 0
Troubleshooting Chart
Symptom Possible Causes Corrective Action
No power to unit Check for power at outlet. Check
fuse box/circuit breaker for blown
fuse or tripped breaker. Replace or
reset.
Faulty power cord Check with test light at unit; if no
circuit and current is indicated at
outlet, replace or repair.
Low voltage Check input voltage for proper
voltage. Take appropriate action to
correct voltage supply problem.
Unit does not run
Faulty compressor Check compressor motor windings
for opens/shorts.
Perform compressor diagnostic test
Replace if necessary.
Excessive door opening Consumer education
Overloading of shelves Consumer education
Warm or hot foods placed in cabinet Consumer education
Cold control set too warm Set control to colder setting.
Poor door seal Level cabinet. Adjust hinges.
Replace gasket.
Refrigerator airflow Check auto damper is opening by
removing grille. With door open,
damper should open. Replace if
faulty.
Interior light remains on Check switch. Replace if necessary.
Faulty condenser fan or evaporator
fan Check fan and wiring. Replace if necessary.
Refrigerator section too warm
Faulty compressor Replace compressor.
Troubleshooting chart on following pages contains symptoms that may be seen in malfunctioning units. Each
symptom is accompanie by one or more possible causes an by a possible reme y or test to etermine if
components are working properly.
To avoi risk of electrical shock, personal injury, or eath, isconnect electrical power source to unit, unless test
proce ures require power to be connecte . Discharge capacitor through a resistor before attempting to service.
Ensure all groun wires are connecte before certifying unit as repaire an /or operational.
!
WARNING

16021730 Rev. 0 18
Symptom Possible Causes Corrective Action
Refrigerator temperature control set
too cold Adjust refrigerator temperature control.
Refrigerator section too cold
Refrigerator airflow not properly
adjusted Check air flow.
Temperature controls set too warm Reset temperature controls.
Poor door seal Level cabinet. Adjust hinges.
Replace gasket.
Dirty condenser or obstructed grille Check condenser and grille. Clean.
Faulty control Test control. Replace if failed.
Freezer and refrigerator sections too
warm
Refrigerant shortage or restriction Check for leak or restriction. Repair,
evacuate and recharge system.
Freezer temp control set too cold Adjust freezer temperature control.Freezer section too cold Faulty control Test control. Replace if failed.
Temperature control set too cold Adjust temperature control.
Dirty condenser or obstructed grille Check condenser and grille. Clean.
Poor door seal Level cabinet. Adjust hinges.
Replace gasket.
Interior light remains on Check switch. Replace if necessary.
Faulty condenser fan or evaporator
fan Check fan and wiring. Replace if necessary.
Faulty control Test control. Replace if failed.
Refrigerant shortage or restriction Check for leak or restriction. Repair,
evacuate and recharge system.
Refrigerant overcharge Check for overcharge. Evacuate and
recharge system.
Unit runs continuously
Air in system Check for low side leak. Repair,
evacuate and recharge system.
Loose flooring or floor not firm Repair floor or brace floor.
Cabinet not level Level cabinet.
Tubing in contact with cabinet, other
tubing, or other metal Adjust tubing.
Drip pan vibrating Adjust drain pan.
Fan hitting another part Ensure fan properly aligned and all
attaching hardware and brackets are
tight and not worn. Tighten or
replace.
Worn fan motor bearings Check motor for loss of lubricant or
worn bearings. Replace if necessary.
Compressor mounting grommets
worn or missing. Mounting hardware
loose or missing
Tighten hardware. Replace
grommets if necessary.
Noisy operation
Free or loose parts causing or
allowing noise during operation Inspect unit for parts that may have worked free or loose or missing
screws. Repair as required.
Troubleshooting Chart
To avoi risk of electrical shock, personal injury, or eath, isconnect electrical power source to unit, unless test
proce ures require power to be connecte . Discharge capacitor through a resistor before attempting to service.
Ensure all groun wires are connecte before certifying unit as repaire an /or operational.
!
WARNING

19 16021730 Rev. 0
Symptom Possible Causes Corrective Action
Defrost thermostat faulty Check defrost thermostat. Replace if
failed.
Evaporator fan faulty Check fan motor. Replace if failed.
Defrost heater remains open Check defrost heater continuity.
Replace if failed.
Defrost control faulty Check control and replace if failed.
Open wire or connector Check wiring and connections.
Repair as necessary.
Refrigerant shortage or restriction Check for leak or restriction. Repair,
evacuate and recharge system.
Supply voltage out of specification Check input voltage. Correct any
supply problems.
Faulty fan motor Check fan motor. Replace if failed.
Restricted air flow Check condenser and grille for dirt.
Clean.
Frost or ice on evaporator
Refrigerant shortage or restriction Check for leak or restriction. Repair,
evacuate and recharge system.
Troubleshooting Chart
To avoi risk of electrical shock, personal injury, or eath, isconnect electrical power source to unit, unless test
proce ures require power to be connecte . Discharge capacitor through a resistor before attempting to service.
Ensure all groun wires are connecte before certifying unit as repaire an /or operational.
!
WARNING

16021730 Rev. 0 20
System Diagnosis
CONDITION
SUCTION
PRESSURE
VARIATION
FROM
NORMAL
HEAD
PRESSURE
VARIATION
FROM
NORMAL
T1 INLET
TEMPERATURE
VARIATION
FROM NORMAL
T2 OUTLET
TEMPERATURE
VARIATION
FROM NORMAL
T3 SUCTION
TEMPERATURE
VARIATION
FROM NORMAL
WATTAGE
VARIATION
FROM
NORMAL
Refrigerant
Overcharge Increase Increase Warmer Warmer Colder Increase
Shortage of
Refrigerant Decrease Decrease or
Increase
See Text Colder Warmer Warmer Decrease
Partial
Restriction Decrease
Decrease or
Increase
See Text
Note 2
Colder Warmer Warmer Decrease
Air in System Near Normal Increase Warmer Warmer Warmer Increase
Low Ambient
Installations
(High
Ambients the
Reverse)
Decrease Decrease Colder Warmer Warmer Decrease
Additional
Heat Load Increase Increase Warmer Warmer Warmer Increase
Inefficient
Compressor Increase Normal or Decrease Warmer or Colder Warmer Warmer Decrease
Symptoms of an Overcharge
 Above normal freezer temperatures.
 Longer than normal or continuous run.
 reezing in refrigerator.
 Higher than normal suction and head pressure.
 Higher than normal wattage.
 Evaporator inlet and outlet temperatures warmer than
normal.
 Suction tube temperature below ambient. Always
check for separated heat exchanger when suction
temperature is colder than ambient.
Various conditons could indicate an overcharge. or
example, if the cooling coil is not defrosted at regular
intervals, due to a failure of the defrost system, the
refrigerant will "flood out" and cause the suction line to
frost or sweat. The cause of this problem should be
corrected rather than to purge refrigerant from the
sytem. Running the freezer section colder than
necessary (-2 to -1 . is considered normal package
temperatures) or continuous running of the compressor
for a variety of reasons, or the freezer fan motor not
running, may give the indication of an overcharge.
Symptoms of Refrigeration Shortage
 Rise in food product temperature in both
compartments. (See Note 1 below.)
 Long or continuous run time.
 Look for obvious traces of oil that would occur due to a
leak or cracked refrigerant line.
 Lower than normal wattage.
 Compressor will be hot to touch because of the heat
generated by the motor windings from long continuous
running. It will not be as hot as it would be with a full
charge and long run times for some other reason such
as a dirty condenser.
 Depending on the amount of the shortage, the
condenser will not be hot, but closer to room
temperature. The capillary tube will be warmer than
normal from a slight shortage.
 If the leak is on the high side of the system, both
gauges will show lower than normal readings and will
show progressively lower readings as this charge
becomes less. The suction pressure guage will
probably indicate a vacuum.
 If the leak is on the low side of the system the suction
pressure guage will be lower than normal - probably in
a vacuum - and the head pressure gauge will be
higher than normal. It will probably continue to
become higher because air drawn in through the leak
is compressed by the compressor and accumulates in