hussmann GSVM - Manual (Page 15)

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4. Refrigerant overcharge 4. Purge system, evacuate
and recharge.
5. Low voltage, compressor
cycling on overload 5. Check voltage at
compressor should not be
more than 5% below rating
Compressor runs
continuously. Product too
warm 1. Short of refrigerant 1. Leak check, replace drier,
evacuate and recharge
2. Inefficient compressor 2. Replace
Compressor runs
continuously. Product too
cold 1. Defective control 1. Replace
2. Control sensing element
not in positive contact 2. Assure proper contact
3. Short on refrigerant 3. Leak check, replace drier,
evacuate and recharge.
TROUBLE SHOOTING LIGHT CHART
PROBLEM SOLUTION
Lights won’t start 1. Check light switch
2. Check continuity to ballast
3. Check to see if bulbs inserted properly in sockets
4. Check voltage
Lights flicker 1. Allow lamps to warm up
2. Check lamp sleeve for cracks
3. Check sockets for moisture and proper contact
4. Bulb replacement may be necessary
5. Check voltage
6. New bulbs tend to flicker until used