Troubleshooting Guide - Hussmann GSVM Installation & Operation Manual

P/N 0545716_G
PROBLEM
Compressor will not start.
(no noise)
Compressor will not start;
cuts out on overload.
Warm storage temperature
Compressor runs continuously;
product too warm.
Compressor runs continuously;
product too cold
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

TROUBLESHOOTING GUIDE

PROBABLE CAUSE
1. Power disconnected
2. Blown fuse or breaker
3. Defective or broken wiring
4. Defective overload
5. Defective temperature
control
1. Low voltage
2. Defective compressor
3. Defective relay
4. Restriction (pinched cap tube)
5. Restriction (moisture)
6. Condenser blocked with
dust and dirt
7. Defective condenser fan
motor
1. Temperature control not set
properly
2. Short or refrigerant
3. Cabinet location too warm
4. Refrigerant over-charge
5. Low voltage, compressor
cycling on overload
1. Short of refrigerant
2. Inefficient compressor
3. Coil iced up
1. Defective control
2. Control sensing element not
in positive contact
3. Short on refrigerant
SOLUTION
1. Check service cord or
wiring connection
2. Replace fuse or reset
breaker
3. Repair or replace
4. Replace
5. Replace
1. Cabinet voltage must not be
more than 5% below rating
2. Replace
3. Replace
4. Repair or replace
5. Leak check, replace drier
evacuate and recharge
6. Clean condenser
7. Replace
1. Reset control. Rotate knob
Clockwise
2. Leak check, replace drier
evacuate and recharge
3. Move to cooler location or
correct excessive heat source
4. Purge system, evacuate and
recharge
5. Compressor voltage must not
be more than 5% below rating
1. Leak check, replace drier,
evacuate and recharge
2. Replace
3. Force manual defrost
1. Replace
2. Assure proper contact
3. Leak check, replace drier
evacuate and recharge
GSVM Open Vertical Merchandisers
5-3