Table of Contents
Advertisement
1-3. TROUBLESHOOTING (Continued)
Problem
A. Unit not heating
B. Unit not heating
to desired temperature
C. Unit overheats
A. With power switch
turned on, the cabinet
is inoperative
B. With power switch
turned on, the blower
and fan operate, but
the power light is
off, and the unit
won't heat
203
Cause
HEATING SYSTEM
• Faulty thermostat
• Faulty high limit
• Faulty heater
• Faulty wiring
• Faulty blower
• Thermometer not indicating
true temperature
• Faulty thermostat
• Faulty blower
POWER SECTION
• Unit not connected to electrical
supply
• Open circuit breaker or fuse
• Faulty cord or plug
• Faulty power switch
• Open high limit
Model HCH-930/932
Correction
• Check thermostat
• Check high limit
• Check heater
• Check wiring for loose connections
or broken wires
• Check blower and replace if bad
• Check cabinet temperature with
another thermometer; if necessary,
replace thermometer
• Check thermostat
• Check blower and replace if bad
• Connect unit to electrical supply
• Reset circuit breaker, or replace
fuse
• Check cord and plug
• Check power switch
• With unit cool, check high limit
• If the high limit opened because of
overheating, refer back to part C
of the Heating System trouble-
shooting
1-3
Advertisement
Table of Contents
