Form No. GRCMWDHHIM-0907
15
TROUBLESHOOTING GUIDE
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
Overhead heat is NOT hot
enough.
Base heat is too hot.
Base heat not hot enough.
Overhead infinite heat control
set too low.
Overhead infinite heat control
switch is defective.
Heating element(s) not
working.
Excessive air movement
around warming unit.
Electronic temperature
control set too high.
Adjust overhead infinite heat control to a
higher setting.
Contact Authorized Service Agent or
Hatco for assistance.
Contact Authorized Service Agent or
Hatco for assistance.
Restrict or redirect air movement (i.e. air
conditioning duct or exhaust fan) away
from unit.
Adjust electronic temperature control to a
lower setting (suggested setting is 170°F
[77°C]).
Electronic temperature control
system not working properly.
Electronic temperature control
set too low.
Electronic temperature control
system not working properly.
Base heating element(s) not
working.
Contact Authorized Service Agent or
Hatco for assistance.
Contact Authorized Service Agent or
Hatco for assistance.
Contact Authorized Service Agent or
Hatco for assistance.
Adjust electronic temperature control to
higher setting (suggested setting is
170°F [77°C], maximum setting is 200°F
[93°C]).
WARNING
To avoid any injury or damage the unit must
only be serviced by qualified personnel.
WARNING
To avoid any injury, turn the power switch OFF,
unplug the unit from the power source and allow
to cool completely before performing any
maintenance or cleaning.
Light bulb(s) not working.
Overhead heat is too hot.
Light bulb(s) defective.
Light bulb(s) loose.
Tighten light bulb(s).
Power turned Off.
Overhead infinite heat control
set too high.
Overhead infinite heat control
switch is defective.
Replace light bulb(s).
Turn unit On.
Adjust overhead infinite heat control to a
lower setting.
Contact Authorized Service Agent or
Hatco for assistance.
