Frigidaire FAS156N1A Quick start guide

Product Information
and Technical Guide
2004 Room Air Conditioners
5995413183 July 2004
ATTENTION SERVICERS!
To get a helping hand, visit the
Frigidaire Web Site at:
User name: service
Password: tips
http://www.frigidaire.com
Safe Servicing Practices 3
Model Specifications 4-7
Compressor Overloads 8
Restrictor Tube Data 8
Receptacle Codes 9
Product Dimensions 10
Thermostat Dia
g
rams 11-12
Fan/Blower Dia
g
rams 13-14
Wiring Diagrams 15-17
Troubleshooting 18-20

2
TABLE OF CONTENTS
Safe Servicing Practices ............................................................................................3
Model Specifications ..................................................................................................4-7
Compressor Overload Data .......................................................................................8
Restrictor Tube Data ..................................................................................................8
Receptacle Outlet Codes ...........................................................................................9
Product Dimensions ..................................................................................................10
Control Thermostat Location Diagrams ...................................................................11-12
Slider Casement ......................................................................................................11
Compact Electronic Control .....................................................................................11
Compact Rotary.......................................................................................................11
Intermediate Top Control Rotary ..............................................................................11
2004 Heavy Duty Thermostat Locations ..................................................................12
2004 Builder Thermostat Locations .........................................................................12
2004 Slider Thermostat Locations ...........................................................................12
Fan and Blower Location Diagrams .........................................................................13-14
Compact .................................................................................................................13
18.5” - No Side Louvers ...........................................................................................13
Slider Casement ......................................................................................................13
Motor .....................................................................................................................14
Heavy Duty Top Control ...........................................................................................14
Heavy Duty Side Discharge .....................................................................................14
Wiring Diagrams .........................................................................................................15-17
A232012 .................................................................................................................15
309201101/02 .........................................................................................................16
309201102/02 .........................................................................................................16
309902101/01 .........................................................................................................17
Troubleshooting .........................................................................................................18-20

3
WARNING
This service manual is intended for use by persons having electrical and mechanical training and
alevelofknowledgeofthesesubjectsgenerallyconsideredacceptableintheappliancerepairtrade.
ElectroluxHomeProductsInc. cannot beresponsible,norassumeanyliability,forinjuryordamage
of any kind arising from the use of this manual.
©2004 Electrolux Home Products, Inc.
SAFE SERVICING PRACTICES - ALL APPLIANCES
To avoid personal injury or property damage, it is important that Safe Servicing
Practices be observed. The following are some limited examples of safe practices.
1. DO NOT attempt a product repair if you doubt your ability to complete it in a safe
and satisfactory manner.
2. Before servicing or moving an appliance
• Remove power cord from electrical outlet, trip circuit breaker to OFF position,
or remove fuse
• Turn off gas supply
• Turn off water supply
3. Never interfere with the proper operation of any safety device.
4. Use only OEM replacement parts cataloged for this appliance.
Substitutions may defeat compliance with safety standards set for home
appliances.
5. GROUNDING: The standard color coding for safety ground wires is GREEN, or
GREEN with YELLOW STRIPES. DO NOT use ground leads as current carrying
conductors. It is EXTREMELY important that the service technician reestablish all
safety grounds prior to completing service. Failure to do so will create an electrical
hazard.
6. Prior to returning the product to service, ensure that
• All electrical connections are correct and secure
• All electrical leads are properly dressed and secured away from sharp edges,
high-temperature components, and moving parts
• All non-insulated electrical terminals, connectors, heaters, etc. are adequately
spaced away from all metal parts and panels
• All safety grounds (both internal and external) are correctly and securely
connected
• All panels are properly and securely reassembled

4
FRIGIDAIRE MODEL SPECIFICATIONS
Model FAS156N1A FAS184N2A FAS185N2A FAS186N2A FAS226N2A
Chassis Type Heavy Duty
Top Control
Heavy Duty
Top Control
Heavy Duty
Top Control
Heavy Duty
Top Control
Heavy Duty
Top Control
Capacity Features
BTU - Cooling
BTU - Heating
Moisture Removal
EER
15100
-
3.5
10.7
18000/17800
-
5.3
9.7
18500/18200
-
5.5
10.7
18500/18200
-
5.5
10.7
22000/21600
-
6.5
9.4
Electrical Information
Voltage
Amps - Cooling
Amps - Heating
Watts - Cooling
Watts - Heating
Fuse/Breaker (Amps)
Receptacle Code
Wiring Diagram
Page #
115
12.5
-
1415
-
15
A
309902101
17
230/208
8.5/9.0
-
1860/1840
-
15
C
309902101
17
230/208
7.8/8.5
-
1730/1700
-
15
C
309902101
17
230/208
7.8/8.5
-
1730/1700
-
15
C
309902101
17
230/208
10.5/11.4
-
2340/2300
-
15
C
309902101
17
Air Flow System
Capacitor-µ farads
Fan Motor Mfg.
Fan Motor Number
RPM/CMP (EVAP)
High
Medium
Low
Heat Only
10/370
Heshan
309630615
980/530
-
810/400
-
6/440
Heshan
309630613
975/500
-
775/400
-
6/450
Heshan
309630613
1000/480
-
800/380
-
6/450
Heshan
309630613
1000/480
-
800/380
-
7.5/450
Heshan
309630614
1115/550
-
925/470
-
Refrigeration System
Compressor Mfg.
Compressor Number
Compressor Type
Overload Protector
Capacitor-µ farads
Refrigerant Charge
Restrictor Tube
Thermostat Type
LG
QK191CAB
Rotary
A363784
60/370
42
A112129
Electronic
LG
QJ258KAB
Rotary
A363771
25/440
31.75
A112138
Electronic
LG
QJ250KBA-6A
Rotary
A363789
35/450
36
A112115
Electronic
LG
QJ250KBA-6A
Rotary
A363789
35/450
36
A112115
Electronic
LG
QP306KBA
Rotary
Internal
40/450
38.5
A112114
Electronic
Installation Instructions
Kit Type
Part Number
A
309000906
A
309000906
A
309000906
A
309000906
A
309000906
Control Thermostat
Location Diagram Page 12 Page 12 Page 12 Page 12 Page 12
Condenser Fan and
Evaporator Blower
Location Diagram
Page 14 Page 14 Page 14 Page 14 Page 14

5
FRIGIDAIRE MODEL SPECIFICATIONS
Model FAS256N2A FAS296N2A FAH085N1T FAH08EN1T FAH105N1T
Chassis Type Heavy Duty
Top Control
Heavy Duty
Top Control
Builder Line Builder Line Builder Line
Capacity Features
BTU - Cooling
BTU - Heating
Moisture Removal
EER
25000/24700
-
7.6
9.4
28500/28000
-
8.6
8.5
8000
-
1.8
9.4
8000
4200
1.8
9.4
10000
-
2.8
9.4
Electrical Information
Voltage
Amps - Cooling
Amps - Heating
Watts - Cooling
Watts - Heating
Fuse/Breaker (Amps)
Receptacle Code
Wiring Diagram
Page #
230/208
12.0/13.0
-
2660/2630
-
20
D
309902101
17
230/208
15.0/16.3
-
3365/3300
-
30
E
309902101
17
115
7.5
-
850
-
15
A
309201101
16
115
7.5
12
850
1250
15
A
309201102
16
115
10
-
1065
-
15
A
309201101
16
Air Flow System
Capacitor-µ farads
Fan Motor Mfg.
Fan Motor Number
RPM/CMP (EVAP)
High
Medium
Low
Heat Only
7.5/450
Heshan
309630616
1145/590
-
925/470
-
7.5/450
Heshan
309630616
1145/570
-
960/475
-
10/370
Welling
309647503
1130/280
950/230
800/190
-
10/370
Welling
309647503
1130/280
950/230
800/190
-
10/370
Welling
309647503
1130/280
950/240
800/210
-
Refrigeration System
Compressor Mfg.
Compressor Number
Compressor Type
Overload Protector
Capacitor-µ farads
Refrigerant Charge
Restrictor Tube
Thermostat Type
LG
QP348KBB
Rotary
Internal
40/450
40.5
A112153
Electronic
LG
QP425KAA
Rotary
Internal
45/450
41.3
A112156/57-59
Electronic
Matsushita
2R11S3R126A6A
Rotary
309205101
35/370
18.7
A112116
Electronic
Matsushita
2R11S3R126A6A
Rotary
309205101
35/370
18.7
A112116
Electronic
LG
QK141CCA
Rotary
A363785
50/370
20.5
A112129
Electronic
Installation Instructions
Kit Type
Part Number
A
309000906
A
309000906
T
309636002
T
309636002
T
309636002
Control Thermostat
Location Diagram Page 12 Page 12 Page 12 Page 12 Page 12
Condenser Fan and
Evaporator Blower
Location Diagram
Page 14 Page 14 Page 14 Page 14 Page 14

6
FRIGIDAIRE MODEL SPECIFICATIONS
Model FAH105N2T FAH10EN2T FAH124N2T FAH12EN2T FAK083N7V
Chassis Type Builder Line Builder Line Builder Line Builder Line Slider
Casement
Capacity Features
BTU - Cooling
BTU - Heating
Moisture Removal
EER
10000/9800
-
2.8
9.4
10000/9800
10600/8600
2.8
9.4
12000/11700
-
3.6
9
12000/11700
10600/8600
3.6
9
8000
-
2.2
10.5
Electrical Information
Voltage
Amps - Cooling
Amps - Heating
Watts - Cooling
Watts - Heating
Fuse/Breaker (Amps)
Receptacle Code
Wiring Diagram
Page #
230/208
4.7/5.1
-
1060/1045
-
15
C
309201101
16
230/208
4.7/5.1
15.5/14
1060/1045
3450/2800
20
D
309201102
16
230/208
5.9/6.4
-
1335/1300
-
15
C
309201101
16
230/208
5.9/6.4
15.5/14
1335/1300
3450/2800
20
D
309201102
16
115
6.7
-
760
-
15
A
A232012
15
Air Flow System
Capacitor-µ farads
Fan Motor Mfg.
Fan Motor Number
RPM/CMP (EVAP)
High
Medium
Low
Heat Only
6/450
Welling
309647501
1130/280
1010/240
880/210
-
6/450
Welling
309647501
1130/280
1010/240
880/210
-
7.5/450
Welling
309647502
1280/300
1130/260
975/230
-
7.5/450
Welling
309647502
1280/300
1130/260
975/230
-
5/370
Heshan
309646002
1120/240
1000/210
940/190
-
Refrigeration System
Compressor Mfg.
Compressor Number
Compressor Type
Overload Protector
Capacitor-µ farads
Refrigerant Charge
Restrictor Tube
Thermostat Type
LG
QK141KBE
Rotary
A363786
30/450
18.4
A112145
Electronic
LG
QK141KBE
Rotary
A363786
30/450
18.4
A112145
Electronic
LG
QK164KBC
Rotary
A363788
30/450
22.6
A112119
Electronic
LG
QK164KBC
Rotary
A363788
30/450
22.6
A112119
Electronic
Matsushita
2R11S3R126A2A
Rotary
309205101
35/370
20.11
A112124
Bulb
Installation Instructions
Kit Type
Part Number
T
309636002
T
309636002
T
309636002
T
309636002
V
309625802
Control Thermostat
Location Diagram Page 12 Page 12 Page 12 Page 12 Page 11
Condenser Fan and
Evaporator Blower
Location Diagram
Page 14 Page 14 Page 14 Page 14 Page 13

7
FRIGIDAIRE MODEL SPECIFICATIONS
Model FAK103N1V FAK123N1V
Chassis Type Slider
Casement
Slider
Casement
Capacity Features
BTU - Cooling
BTU - Heating
Moisture Removal
EER
10000
-
2.8
9.5
12000
-
3.6
9.5
Electrical Information
Voltage
Amps - Cooling
Amps - Heating
Watts - Cooling
Watts - Heating
Fuse/Breaker (Amps)
Receptacle Code
Wiring Diagram
Page #
115
9.6
-
1050
-
15
A
A232012
15
115
11.5
-
1260
-
15
A
A232012
15
Air Flow System
Capacitor-µ farads
Fan Motor Mfg.
Fan Motor Number
RPM/CMP (EVAP)
High
Medium
Low
Heat Only
15/370
Heshan
309646001
1400/305
1230/260
1050/210
-
15/370
Heshan
309646001
1400/305
1230/260
1050/210
-
Refrigeration System
Compressor Mfg.
Compressor Number
Compressor Type
Overload Protector
Capacitor-µ farads
Refrigerant Charge
Restrictor Tube
Thermostat Type
LG
QK134CCA
Rotary
A363785
50/370
20.46
A112137
Bulb
LG
QK164CCA
Rotary
A363776
50/370
23.28
A112104
Bulb
Installation Instructions
Kit Type
Part Number
V
309625802
V
309625802
Control Thermostat
Location Diagram Page 11 Page 11
Condenser Fan and
Evaporator Blower
Location Diagram
Page 13 Page 13

8
Minimum Maximum
A112114 Red 35.00 0.112 0.059 10 0.294 0.318
A112115 Red 40.00 0.112 0.059 10 0.274 0.296
A112129 Purple 45.00 0.097 0.046 25 0.261 0.283
A112138 Black 33.00 0.099 0.049 20 0.304 0.330
A112153 Blue 37.50 0.125 0.064 10 0.227 0.247
A112156 Black 38.19 0.099 0.049 20 0.352 0.382
A112157 Black 19.69 0.099 0.049 20 0.181 0.197
A112158 Black 23.62 0.099 0.049 20 0.218 0.236
A112159 Black 29.13 0.099 0.049 20 0.268 0.291
A112124 White 45.00 0.106 0.054 20 0.346 0.374
A112137 Purple 51.18 0.097 0.046 25 0.248 0.268
A112104 Black 45.00 0.099 0.049 20 0.258 0.280
A112116 White 40.00 0.106 0.054 20 0.366 0.396
A112129 Purple 45.00 0.097 0.046 25 0.261 0.283
A112145 Black 37.00 0.099 0.049 20 0.288 0.312
A112119 Black 35.00 0.099 0.049 20 0.296 0.320
I.D PSIG CFM Dry Air
Restrictor Tube Data
Style# Internal Diameter
Color Code Length O.D.
Test Amp Opening Time-Sec
309260303 2R11S3R126A6A MRA98705
A363785 QK134CCA MRA12061-12056 150 61 50.5 6-16
A363785 QK141CCA MRA12061-12056 150 61 50.5 6-16
A363776 QK164CCA MRA12053-12057 150 61±9 C° 41.5 6-16
A363784 QK191CAB MRA4720-12057 150 69 50.3 2-12
A363786 QK141KBE MRA12054-12056 155±7 C° 69 14.5 6-16
A363788 QK164KBC MRA12124-12056 155 69 19.0 6-16
A363771 QJ258KAB MRA12044-12057 160 61 29.0 6-16
A363789 QJ250KBA MRA12107-12057 150 69 27.3 6-16
*Terminal to overload must withstand 10 pounds pull test.
Compressor Overload Data
Closing Temp
C°± 11 C°
Short Time Trip at 25 C°
Part# Used With Compressor Supplier Part# Opening Temp
C°± 5 C°

9
Receptacle Outlet Codes
Grounding Type
Wall Receptacle
Power Supply Cord with
3-prong Grounding Plug
Code A
115 Volts - 15 Amps
NEMA 5 - 15 TYPE
Code B
115 Volts - 20 Amps Code C
230 Volts - 15 Amps
NEMA 6 - 20 TYPE
Code D
230 Volts - 20 Amps
NEMA 6 - 20 TYPE
Code E
230 Volts - 30 Amps
NEMA 6 - 30 TYPE
NEMA 5 - 20 TYPE

10
Product Dimensions
Heavy Duty Slide Out Top Control

11
Control Thermostat Location Diagrams
Slider Casement
Intermediate Rotary
Top Control
Compact Rotary Control
Compact Electronic Control

12
Control Thermostat Location Diagrams
fin
fin
9th Row from bottom
8th Row from bottom
7th Row from bottom
6th Row from bottom
Retaining Clip
Retaining Clip
2004 Slider
Thermostat
Locations
3.75"
A
ir thermistor and air thermistor holder(Place
between 9th & 10th
rows up from the bottom)
15.1K 18K 22 K18.5K 28.5K25K
Freeze thermistor and freeze thermistor holder.
2004 Heavy Duty Thermostat Locations
2004 Builder Thermostat Locations
7.87"
Freeze thermistor and freeze
thermistor holder.
Section B-B
8K and 10K12K
3.94"
B
ASection A-A
Bracket-Evap
B
A
fin
first row from bottom
second row from bottom
third row from bottom
fourth row from bottom
insulation

13
Fan and Blower Location Diagrams
Slider Casement
Compact
18.5”
No Side Louvers

14
Fan and Blower Location Diagrams
Heavy Duty Side Discharge
Heavy Duty
Top Control
TORQUE TO 25 IN.LBS.
AIR SYSTEM
TORQUE TO
15-20 IN. LBS.
(H/D T/C)
PUSH FAN BLADE
TILL END
.300
SCROLL
BLOWER
WHEEL
SHROUD
& SEAL
ASSY.
TORQUE TO
22-27 IN.LBS.
OF FLAT
COND. FAN
SLINGER RING
SHROUD
.560
.370
REF.
.380
SCREW (3) SHROUD/
BULKHEAD ASSY.
CLAMP
COND. FAN
CLAMP SCREW
FAN CLAMP
BULKHEAD ASSY.
BLOWER WHEEL
To be fully seated
against motor shaft.
(bottom out on shaft)
Clamp Clamp
Evaporator Side Condenser Side
CONDENSER FAN
To be fully seated
against motor shaft.
(bottom out on shaft)
Motor Shaft
Motor

15
A232012
R
W
BK
BL
BK
A
L1
2
3
4
12
3
4
1
or (ou)
PLAIN (BROWN) - ORDINAIRE (BRUN)
MED FAN
(VENTILATEUR MOYEN)
LO FAN
(VENTILATEUR LENT)
SELECTOR SWITCH
(SÉLECTEUR)
LO COOL
(REFROIDISSEMENT BAS)
MED COOL
(REFROIDISSEMENT MOYEN)
HI COOL
(REFROIDISSEMENT ÉLEVÉ)
OFF
(ARRÊT)
HI FAN
(VENTILATEUR RAPIDE)
ROOM THERMOSTAT
(THERMOSTAT DE LA PIÉCE)
COMPRESSOR
OVERLOAD
(SURCHARGE DU
COMPRESSEUR)
FAN MOTOR
(MOTEUR DU
VENTILATEUR)
COMPRESSOR
(COMPRESSEUR)
BK
C
R
S
W
R
W
COMPRESSOR
CAPACITOR
(CONDENSATEUR
DU COMPRESSEUR)
START
ASSIST
(DÉMARREUR)
FAN CAPACITOR
(CONDENSATEUR
DU VENTILATEUR)
BR
ALTERNATE INTERNAL
COMPRESSOR OVERLOAD
(AUTRE SURCHARGE
INTERNE DU COMPRESSEUR)
BK
WR
R
S
C
RIBBED - BLUE
(RAYE - BLEU)
GND
(TERRE)
G
COLOR CODE
BL - BLUE (BLEU)
G - GREEN (VERT)
BK - BLACK (NOIR)
BR - BROWN (BRUN)
R - RED (ROUGE)
W - WHITE (BLANC)
Wiring Diagrams

16
Wiring Diagrams
Compressor
capacitor
(Condensateur Du
Compresseur)
Compressor
(Com presseur)
Relay
(Relais)
Evap
Sensor(Sonde Anti Givre)
Plain
(Brown)
Ordinaire(Brun)
G
(Vert)
GND Ribbed
(Blue)
Raye(Bleu)
W
Room
Sensor(Sonde D' Ambiance)
Connector(Connecteur)
3
4
Relay
(Relais)
Relay
(Relais)
Compressor
Relay(Relais
Du
Compresseur)
MED
BL
BK=Black(Noir)
BL=Blue(Bleu)
BR =B ro wn (B run )
G=Green(Vert)
R=Red(Rouge)
W=White(Blanc)
Y=Yellow(Jaune)
Fan motor
(Moteur Du
Ve n ti la t eu r )
Fan motor capacitor
(Condensateur Du
Ve n ti la t eu r )
309201101/02
Compressor Overload
(Surcharge Du
Compresseur)
SR
R
BR
HI
BK
A
lternate Internal Overload
Compressor
(Autre Surcharge
Interne Du Compresseur)
R
W
SR
C
BK
LO
R
R
FM
FH FL
AC-N N1 N2
0
Heater(Chauffage
Electrique)
OR
Heater Relay(Relais Du
Chauffage Electrique)
BK
OR
1
8
6
4
RR
2
BK=Black(Noir)
BL=Blue(Bleu)
BR = Bro wn(B ru n)
G=Green(Vert)
OR=Orange(Orange)
R=Red(Rouge)
W=White(Blanc)
Y=Yellow(Jaune)
309201102/02
Relay
(Relais)
Relay
(Relais)
Relay
(Relais)
DAHT(Sonde Du
Chauffage
Electrique)
Relay
(Relais)
LO
R
OR Fan motor
(Moteur Du
Ventilateur)
R
SR
W
Compressor
capacitor
(Condensateur Du
Compresseur)
G
(Vert)
Ribbed
(Blue)
Raye(Bleu)
GND
Plain
(Brown)
Ordinaire(Bru n) Fan motor capacitor
(Condensateur Du
Ventilateur)
Compressor
(Compresseur)
BR
OR
Evap
Sensor(Sonde Anti Givre)
Room
Sensor(Sonde D' Ambiance)
Connector(Connecteur)
BK
C
WOR Y
(O U)
Compressor Overload
(Surcharge Du
Compresseur)
BK
A
lterna te Inter nal Overload
Compressor
(Autre Surcharge
Interne Du Compresseur)
W
R
SR
Compressor
Relay(Relais
Du
Compresseur)
3
4HI
BK
C
BK
MED
BL
BK
FH
HT FM FL R
N1
AC- N N2
R

17
Wiring Diagrams
BK=Black(Noir)
BL=Blue(Bleu)
BR=Brown(Brun)
G=Green(Vert)
R=Red(Rouge)
W=White(Blanc)
Y=Yellow
(
Jaune
)
Alternate Internal Overload
Compressor
(Autre Surcharge
Interne Du Compresseur)
Ion.
J3210
309902101/01
Fan(Ventilateur)
Room
Sensor
(Sonde D'
Ambiance)
Evap
Sensor (Sonde
Anti Givre)
Compressor
(Compresseur)
Fan motor
(Moteur Du
Ventilateur)
Compressor
capacitor
(Condensateur Du
Compresseur)
C
S
W
R
R
BK
Fan motor capacitor
(Condensateur Du
Ventilateur)
S
W
C
Connector (Connecteur)
Compressor Overload
(Surcharge Du
Compresseur)
R
R
BR
G
(Vert)
GND
BK
N
Compressor Relay (Relais Du
Compresseur)
3
4
BK
R
Ionizer(Ion)
(Optional)
(Facultatif)
G
(Vert)
GND
Ribbed
(Blue)
Raye(Bleu)
Plain
(Brown)
Ordinaire(Brun)
BK
WOR Y
(OU)

18
ROOM AIR CONDITIONERS TROUBLESHOOTING
CAUTION: Review Safe Servicing Practices in
the front of this manual before attempting
diagnostic procedures and repairs.
AIR CONDITIONER VOLTAGE LIMITS
ETALPEMAN
GNITAR MUMINIM MUMIXAM
CAV511CAV5.301CAV5.621
CAV032CAV702CAV352
032/802CAV5.791CAV352
AIR CONDITIONER VOLTAGE LIMITS
Low voltage is a common cause of trouble in the operation
of any room air conditioner.
Improper voltage may cause one or more of the following
problems:
1. Unit will not start.
2. Compressor motor cycling on motor protector.
3. Premature failure of motor protector.
4. Blown fuses.
5. Premature failure of compressor or fan motor.
6. Noticable dimming of lights when air conditioner is
running.
7. Evaporator icing. Low voltage may reduce fan speed
resulting in inadequate air flow over evaporator, thereby
allowing it to ice up.
HIGH VOLTAGE
High voltage can be equally troublesome, causing motors
to overheat, cycle on their protectors, or break down
electrically. This problem can only be solved by the power
company.
ELECTRONIC CONTROL
This control is not repairable. If any component in the
control is defective, the entire control must be replaced.
IMPORTANT NOTICE: Repair or replace any
malfunctioning line voltage component before testing
or replacing the electronic control. DO NOT assume a
service problem is directly caused by the electronic
control system. A line voltage component (including
power cord and wiring) that has opened, shorted,
grounded or otherwise malfunctioned, may have created
a service problem.
Low voltage can also be the direct result of inadequately
wired circuits, extension cords, or loose fuses and
connections to the power supply. Voltage may also be a
general condition in the area (a responsibility of the power
company).
All units will start and run on the minimum voltage stated
in the chart to the left, and will perform satisfactorily if the
voltage remains constant. Low voltage caused by defective
wiring will not remain constant under load.
To test for low voltage, use a reliable meter with sufficient
capacity to measure the required voltage. Take
measurements at the electric power entry point and at the
electric outlet serving the air conditioner. Take readings
with the unit off, while the unit is starting, and again while
the unit is running. The lowest reading should not drop
below the lowest value listed in the chart.
SYMPTON POSSIBLE CAUSE
Fan motor will not run. 1. No power.
2. Power supply cord.
3. Selector switch.
4. Energy saving switch (if applicable).
5. Electronic control (if applicable).
6. Wire disconnected or connection loose.
7. Capacitor. (Discharge capacitor before testing.)
8. Defective fan motor windings.
9. Will not rotate. Fan blade hitting shroud or blower
wheel hitting scroll. (Motor cycles on overload.)
Fan motor runs intermittently. 1. Cycle on motor protector.

19
SYMPTON POSSIBLE CAUSE
Fan motor noisy. 1. Condenser fan blade or evaporator blower
wheel.
2. Loose power clamp or set screw.
3. Worn bearings.
4. Grommets (if applicable).
Compressor will not run, but fan motor runs. 1. Voltage.
2. Wiring.
3. Selector switch.
4. Temperature control.
5. Capacitor. (Discharge capacitor before testing.)
6. Compressor.
7. Motor protector (external).
8. Motor protector (internal).
9. Electronic control (if applicable).
10. Hard starting.
Compressor cycles on motor protector. 1. Voltage.
2. Motor protector (external).
3. Motor protector (internal).
4. Fan motor.
5. Condenser air flow restriction.
6. Condenser fins damanged.
7. Capacitor.
8. Wiring.
9. Refrigerant system.
Insufficient cooling. 1. Low capacity.
2. Air filter.
3. Exhaust door open.
4. Unit undersized.
Excessive noise. 1. Evaporator blower wheel.
2. Condenser wheel.
3. Copper tubing.
4. Compressor internal noise.
5. Fan motor.
Excessive water or condensation. 1. Unit operating under extremely high humidity
conditions.
No cooling. 1. Refrigerant leak.
Unit is cooling but room is not cool. 1. Amps and watts.
2. Sealed refrigeration system.
Wattage decreases slowly until abnormally low. 1. Undercharged, restricted strainer or plugged
restrictor tube.
Wattage decreases immediately. 1. No refrigerant.
2. Compressor defective.
Wattage continuously high. 1. Refrigerant overcharge.

20
SYMPTON POSSIBLE CAUSE
Evaporator coil partially frosted. 1. System low on refrigerant.
Evaporator completely iced. 1. Low outside temperature.
No heat. 1. No power.
2. Selector switch position.
3. Temperature control position.
4. Fan motor.
5. Heating element.
6. Selector switch.
7. Temperature control.
8. Terminals and connectors.
Fan motor will not rotate during heat cycle. 1. Thermostatic drain valve. (Water level control, if
(Heat/Cool models only.) applicable.)