Henny Penny HHC-980 Technical Manual page 6

1-3. TROUBLESHOOTING (continued)
Problem
A. Product not
holding temperature
B. Cabinet steaming
product soggy
1-2
Cause
OPERATION
• Doors left open
• Product held too long
• Control temperature set too low
• Bad air heater
• Blower not working
• Bad air heater or blower relays
• Bad high limit
• Low or improper voltage
• Door Gasket torn or worn
• Air probe faulty, open ("E-6A")
or shorted ("E-6B")
• Humidity setpoint too high
• Water heater probe faulty, open
("E-12A"), or closed ("E-12B")
• Bad humidity sensor ("E17")
• Relay stuck closed
Model HHC-980/983
Correction
• Keep doors closed except
to load and serve product
• Hold product only for recom-
mended times
• Increase air temperature;
(SP-3) in Special Program Mode
• Check heaters and replace if bad;
see Tech Mode items 10 and 18
• Check blower and replace if bad;
see Tech Mode item 18
• Replace relay; see Tech Mode
items 10 and 18
• Check high limit and replace if
bad
• Compare receptacle voltage to
data plate voltage
• Replace bad door gaskets
• Ohm out the probe and replace
if necessary
• Decrease humidity;
(SP-4) in Special Program Mode
• Ohm out the probe and replace
if necessary
• Replace humidity sensor
• Replace relay
904