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Troubleshooting Model: GHM Warmer Series
This section describes basic general troubleshooting procedures. Refer to the supplied wiring diagram for more
detailed analysis.
• Electrical troubleshooting should be performed ONLY by qualified service providers. Death or serious injury will
result from contact with energized electrical components or circuits.
• Failure to comply with these DANGER notices will result in serious injury or death, equipment or property
damage, and void the warranty.
Table 6.01 Troubleshooting Procedures
Problem Possible Cause Repair Procedure
Fluorescent lighting not working
A. Fluorescent bulb burned out Replace bulb
B. Fuse blown Replace fuse
C. Faulty ballast Call for service
D. Faulty relay Call for service
Unit not heating properly
A. Pan (bottom) heating element(s)
faulty
Call for service
B. Ceramic (top) heating element(s)
faulty.
Call for service
C. Heat control(s) faulty. Call for service
Unit will not power-up
A. No power to unit
Check circuit breaker or plug in
power cord.
B. Faulty relay Call for service
C. Blown fuse Replace fuse
Unit will not maintain food at proper
holding temperature
A. No power to unit
Check circuit breaker or plug in power
cord.
B. Heat settings too low
Adjust bottom and/or top heat
controls as needed.
C. Food not at proper temperature
when placed into the unit.
Ensure food is at required
temperature before placing into unit.
D. Heating elements and/or ceramic
heaters faulty.
Call for service.
6. Troubleshooting
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