TROUBLESHOOTING GUIDE
Form No. GRCMWM-1108
7
Symptom
Probable Cause
Corrective Action
Light bulb not working.
Overhead heat is too hot.
Base heat is too hot.
No heat, but lights work.
Light bulb loose or defective.
Power Switch turned OFF.
Internal overhead heat temperature
control not working properly.
BASE HEAT control knob set too
high.
Base
heat
thermostat
control
defective.
Heating elements not working.
Temperature control not working
properly.
Tighten or replace light bulb. Use Hatco P/N
02.30.122.00.
Move Power Switch to “On” position.
Contact Authorized Service Agent or Hatco for
assistance.
Adjust BASE HEAT control knob to a lower setting.
Contact Authorized Service Agent or Hatco for
assistance.
Contact Authorized Service Agent or Hatco for
assistance.
Contact Authorized Service Agent or Hatco for
assistance.
Overhead heat is not hot enough.
Heating element not working.
Internal overhead heat temperature
control not working properly.
Excessive air movement around
warming unit.
Contact Authorized Service Agent or Hatco for
assistance.
Contact Authorized Service Agent or Hatco for
assistance.
Base heat is not hot enough.
BASE HEAT control knob set too low.
Base heating element not working.
Base
heat
thermostat
control
defective.
Adjust BASE HEAT control knob to a higher
setting.
Contact Authorized Service Agent or Hatco for
assistance.
Contact Authorized Service Agent or Hatco for
assistance.
Relocate unit or redirect air movement (i.e. air
conditioning duct or exhaust fan) away from unit.
Replace sneeze guard with optional front access
door assembly to keep heat contained.
Excessive air movement around
warming unit.
Relocate unit or redirect air movement (i.e. air
conditioning duct or exhaust fan) away from unit.
Replace sneeze guard with optional front access
door assembly to keep heat contained.
This unit must be serviced by trained and qualified
personnel only. Service by unqualified personnel may lead
to electric shock or burn.
WARNING
ELECTRIC SHOCK HAZARD: Turn the power switch OFF,
unplug the power cord, and allow the unit to cool before
performing any maintenance or cleaning.
WARNING
No heat and no lights.
Power Switch turned off.
Circuit breaker tripped.
Move Power Switch to “On” position.
Reset circuit breaker. If circuit breaker continues to
trip, contact Authorized Service Agent or Hatco for
assistance.
Power Switch defective.
Contact Authorized Service Agent or Hatco for
assistance.
Unit not plugged in or receptacle not
working.
Plug in unit, have receptacle repaired by a certified
electrician, or use a different receptacle.
Unit not plugged in or receptacle not
working.
Plug in unit, have receptacle repaired by a certified
electrician, or use a different receptacle.
