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TROUBLE
PROBABLE CAUSE
SOLUTION
Compressor runs continuously
product too warm
1. Short of refrigerant
1. Leak check, change drier,
evacuate, and recharge
2. Inefficient compressor
2. Replace
3. Dirty condenser
3. Clean
High head pressure
1. Cabinet location too warm 1. Relocate cabinet
2. Restricted condenser air
flow
2. Clean condenser to remove
air flow restriction
3. Defective condenser fan mo-
tor
3. Replace
4. Air or non-condensable gas-
ses in system
4. Leak check, 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
4. Too much refrigerant
4. Change drier evacuate, and
recharge
5. Low voltage. Compressor
cycling on overload
5. Check power
6. Condenser dirty
6. Clean
TROUBLE SHOOTING CHARTS
FOR THE CASE AND LIGHTING
Summary of Contents for USL-2
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