Henny Penny HC-4 Service Manual page 7

1-3. TROUBLESHOOTING (Continued)
PROBLEM
B. Unit will not heat
to desired temp-
erature
C. Unit overheating
A. Both blowers
not working
CAUSE
HEATING SYSTEM (Continued)
• Faulty blower
• Thermometer not indicating
true temperature
• One of heaters defective
• Doors being left open too much
• Gaskets torn or worn
• Defective high limit on one of heaters
• Faulty thermostat
• Faulty blower
VENTILATING SYSTEM
• Faulty blowers
• Faulty fuse (if equipped)
CORRECTION
• Check blower; replace per Blower
Section
• Check cabinet temperature with
another thermometer; if necessary,
replace per Thermometer Section
• Check heater; replace per Heater
Section
• Only open doors as necessary
• Replace gasket per Door Gasket
Replacement Section
• Check high limit; replace per High
Limit Section
• Check thermostat; replace per
Thermostat Section
• Check blowers; replace per Blower
Section
• Check blowers; replace per Blower
Section
• Check fuse; replace per Fuse Section
1-3