Henny Penny HHC-980 Technical Manual page 7

1-3. TROUBLESHOOTING (continued)
Problem
C. Product dry
A. Unit not heating
B. Unit not reaching set
temperature
904
Cause
OPERATION (Continued)
• Bad float switch (E-18)
• Bad water heater high limit
• Bad water heater
• Humidity setpoint too low
• No water in pan
HEATING SYSTEM
• Bad control board
• Bad high limit
• Bad air heater or blower relays
• Bad air heater
• Faulty wiring
• Blown fuse
• Blower not working
• Bad air heater
• Bad air heater, or blower relays
• Doors left open
• Door gasket torn or worn
Model HHC-980/983
Correction
• Replace float switch
• Replace high limit
• Check heater and replace if bad;
see Tech Mode item 18
• Increase Humidity Setpoint
(SP-4) in Special Program Mode
• Check water shut-off valve
• Clean water valve and replace if
necessary
• Replace auto water relay
• Replace control board
• Check high limit; replace if bad
• Replace relay
• Check heaters and replace if bad;
see Tech Mode item 18
• Check for loose connections or
broken wires
• Change 15 amp fuse
• Check blower and replace if bad
See Tech Mode item 18
• Check heaters and replace if bad
See Tech Mode item 18
• Replace relay
• Keep doors closed except
to load and serve product
• Replace bad door gaskets
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