Service Manual

21
1. Appliance Not Cooling
Appliance Not Cooling - Possible Cause
1.
Power Supply
a)
Unplugged, blown fuse, or tripped or defective circuit breaker.
b)
Loose connection.
c)
Not within specications.
2.
Power Supply Cord and Plug
a)
Loose connection.
b)
Defective.
3.
Wiring
a)
Loose connection or open.
b)
Faulty.
4.
Cabinet Thermostat or Cabinet
Thermistor
a)
Loose, disconnected, or defective.
5.
Cabinet Temperature Dial
a)
Loose, disconnected, or defective.
6.
Defrost Timer or Control Module
(if applicable)
a)
Defrost timer defective. If applicable.
b)
Control module in alarm (red LED ashing). If applicable.
c)
Control module defective. If applicable.
7.
Evaporator Fan Motor
a)
Defective.
b)
Fan blade binding.
8.
Condenser Fan Motor
a)
Defective.
b)
Fan blade binding.
9.
Compressor External Protector
a)
Dirty condenser.
b)
Condenser fan motor not operating.
c)
Defective.
d)
Start relay defective.
e)
Low charge.
f)
Start capacitor (if applicable) defective.
10.
Compressor
a)
Defective.
11.
Condenser
a)
Dirty.
12.
Evaporator
a)
Dirty or frozen up.
13.
Refrigerant/Refrigerant Lines
a)
Gas leak.
b)
Refrigerant lines or components restricted.
10.
High-Pressure Switch
(if applicable)
a)
Dirty condenser.
b)
Ambient temperature too warm.
c)
Condenser fan motor not operating.
d)
Refrigerant overcharge.
e)
Refrigerant lines or components restricted.
f)
Bad contacts.
11.
Thermostatic Expansion Valve
(not adjustable)
a)
Defective.