4. Restriction pinched cap
tube
4. Repair or replace tube
5. Restriction moisture 5. Leak che ck, replace drier,
evacuate and recharge
6. Inadequate air over
condenser
7. Defective condenser fan
motor
6. Allow at least 24” at front
and back of unit
compartment
7. Replace
TROUBLE
PROBABLE
CAUSE
SOLUTION
High head pressure
1. Cabinet location too warm
1. Relocated cabinet
2. Restricted condenser air
flow
3. Defective condenser fan
motor
4. Air or non-condensable
gases in system
2. Clean condenser or
remove air flow restriction
3. Replace motor
4. Leak che ck, change drier,
evacuate and recharge
Warm storage temperatures 1. Temperature control not
set properly
1. Reset control
2. Short of refrigerant 2. Leak check, change drier,
evacuate and recharge
3. Cabinet location too warm 3. Relocate cabinet
4. Too much refrigerant 4. Purge system, change
drier, evacuate and rech arge
5. Low voltage, compressor
cycling on overload
5. Check voltage at cabinet.
Should be within 5% of
rating
6. Heavy frost on side walls
6. Defrost cabinet
Compressor runs
continuously, product too
cold
1. Defective control
1. Replace
2. Control s
ensing element
not completely insta
lled in
well
2. Push control sensing
element into well
3. Short on refrigerant 3. Leak check, change drier,
evacuate and recharge
Compressor runs
continuously, product too
warm
1. Short on refrigerant 1. Leak check, change drier,
evacuate and recharge
2. Inefficient compressor
2. Replace
9