Symptom
Probable Cause
Corrective Action
Unit is ON but there is no
heat.
No power to the unit.
Check circuit breaker and reset as necessary. If power
cord connected, check for damage to cord. If power cord
connected, check electrical receptacle.
Switch is defective.
Contact authorized Service agent or Hatco for assistance.
Faulty wiring.
Contact authorized Service agent or Hatco for assistance.
Heating element(s) are defective.
Contact authorized Service agent or Hatco for assistance.
Heat is inadequate.
Excessive air movement around unit.
Restrict or redirect air movement (air conditioning duct
or exhaust fan) away from unit.
Incorrect power supply (low).
Check power supply to unit, making sure it matches
rating on the unit. If power supply is incorrect, change to
match rating on unit.
Heating element(s) are defective.
Contact authorized Service agent or Hatco for assistance.
Heat is excessive.
Voltage supply too high.
Check power supply to unit, making sure it matches
rating on the unit. If power supply is incorrect, change to
match rating on unit.
TROUBLESHOOTING GUIDE
Form No. GRFHSm-0611
9
This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.
WARNING
ELECTRIC SHOCK HAzARD: Turn OFF power switch,
unplug power cord, and allow unit to cool before
performing any cleaning, adjustments, or maintenance.
WARNING
