P/N 2400205_J
5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
SM Spot Merchandisers
SERVICE
TROUBLESHOOTING GUIDE
PROBLEM
PROBABLE CAUSE
SOLUTION
Compressor runs continuously
product too warm
1. Short of refrigerant
2. 2. Dirty condenser
1. Leak check, change drier,
evacuate, and recharge
2. Clean
High head pressure
(High pressure switch on)
1. Cabinet location too warm
2. Restricted condenser air
flow
3. Defective condenser fan
motor
4. Air or non-condensable
gases in system
1. Relocate cabinet
2. Clean condenser to remove air
flow restriction
3. Replace
4. Leak check, change drier,
evacuate and recharge
Warm storage temperature
1. Temperature control not
set properly
2. Short of refrigerant
3. Cabinet location too warm
4. Low voltage, compressor
cycling on overload
5. Condenser dirty
1. Reset control.
2. Leak check, replace drier
evacuate and recharge
3. Relocate
4. Check power
5. Clean
Compressor runs continuously
product too cold
1. Adjust to warmer setting
2. Control feeler not in tube
properly
3. Short on refrigerant
1. Replace
2. Assure proper length in tube
3. Leak check change drier,
evacuate and recharge
Compressor will not start no
noise
1. Power disconnected
2. Defective or broken
wiring
3. Defective overload
4. Defective temperature
control
5. Blown fuse or breaker
1. Check service cords or wiring
connections
2. Repair or replace
3. Replace
4. Replace
5. Replace fuse or reset breaker
Compressor will not start
cuts out on overload
1. Low voltage
2. Defective relay
3. Restriction or moisture
4. Inadequate air condenser
5. Defective condenser fan
motor
1. Contact electrician
2. Replace
3. Leak check, replace drier,
evacuate and recharge
4. Clean condenser
5. Replace
