5-2
S
ervice
P/N 0515297_E
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
TROUBLESHOOTING GUIDE
PROBLEM
Compressor runs
continuously; product
too warm
High head pressure
Warm storage temperature
Compressor runs
continuously; product too
cold
Compressor will not start;
no noise
Compressor will not start
cuts out on overload
PROBABLE CAUSE
1. Short of refrigerant
2. Inefficient compressor
3. Dirty condenser
1. Cabinet location too warm
2. Restricted condenser air flow
3. Defective condenser fan motor
4. Air or non-condensable gases
in system
1. Temperature control not
set properly
2. Short of refrigerant
3. Cabinet location too warm
4. Too much refrigerant
5. Low voltage, compressor
cycling on overload
6. Condenser dirty
1. Defective control
2. Short on refrigerant
1. Blown fuse or breaker
2. Defective or broken wiring
3. Defective overload
4. Defective temperature control
5. Power disconnected
1. Low voltage
2. Defective compressor
3. Defective relay
4. Restriction or moisture
5. Inadequate air over
condenser
6. Defective condenser fan
motor
SOLUTION
1. Leak check, change drier,
evacuate and recharge
2. Replace
3. Clean
1. Relocate cabinet
2. Clean condenser to remove
air flow restriction
3. Replace
4. Leak check, change drier,
evacuate and recharge
1. Reset control.
2. Leak check, replace drier
evacuate and recharge
3. Relocate
4. Change drier evacuate
and recharge
5. Check power
6. Clean
1. Replace
2. Assure proper length in tube
3. Leak check, change drier,
evacuate and recharge
1. Replace fuse or reset breaker
2. Repair or replace
3. Replace
4. Replace
5. Check service cords or
wiring connections
1. Contact electrician
2. Replace
3. Replace
4. Leak check, replace drier,
evacuate and recharge
5. Clean condenser
6. Replace
Summary of Contents for HGM-1 BS
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