Henny Penny HHC-990 Operating instructions

ModelHHC-990
SECTION 5. TROUBLESHOOTING
5-1. TROUBLESHOOTINGGUIDE
PROBLEM CAUSE CORRECTION
Productnot • Doors left open • Keep doors closed except
holdingtemperature to loadand serveproduct
• Productheld toolong • Holdproduct onlyfor recom-
mendedtimes
• Controltemperature settoo low • Increaseair temperature
(SP-3)in SpecialProgram Mode
• Door gasket torn or worn • Replace bad door gaskets
Cabinetsteaming • Humiditysetpointtoohigh • Decreasehumiditysetpoint
productsoggy (SP-4)in SpecialProgram Mode
Productdry • Humiditysetpointtoolow • Increasehumiditysetpoint
(SP-4)in SpecialProgram Mode
• No water in pan • Pour water in water pan
Unitnotheating • Blownfuse • Change15amp fuse
Unitnotreachingset • Doors left open • Keep doors closed except
temperature to load and serve product
• Door gasket torn or worn • Replace bad door gaskets
5-1 703
More detailed troubleshooting information is available in the Technical Manual, available at www.hennypenny.com,
or1-800-417-8405 or 1-937-456-8405.

ModelHHC-990
303 4-7
5-2. ERROR CODESAND Thedisplayshowsthefollowingerror codesandwarningswhena
WARNINGS faultisdetected, alongwithanalarm sound. Boththeheatand
humiditysystemsshutdown,exceptwhenspecifiedotherwise.
Display Cause PanelBoardCorrection
“E-4 CPU TOO HOT” • Control board too hot;
unitoverheatingor
louversclogged
“E-5 AIRTEMP TOOHOT” • Faulty relay, PC board,
or air probe
“E-54A CPU TEMP SENSOR • Faulty PC board
OPEN”
“E-54B CPU TEMP SENSOR • Faulty PC board
SHORTED”
“E-6A AIRTEMP SENSOR • Faulty air probe
FAILEDOPEN”
• Turnswitch toOFFposition, thenbackto
ON; ifdisplay still shows“E-4”,the PC
boardis getting toohot; cleanlouvers and
checkcoolingfan;ifcoolingfanisnot
working,haveit replaced; oncepanel
coolsdown,the controlsshouldreturnto
normal; if“E-4”persists, havethePC
boardreplaced
• Turnswitch toOFFposition, thenbackto
ON; ifdisplayshows “E-5”, theheating
circuitsandtemperature probeshouldbe
checked; oncethe unitcools down, the
controlsshouldreturntonormal; if“E-5”
persists,have thePC boardreplaced
• Turnswitch toOFFposition, thenbackto
ON; ifdisplay shows“E-54A”,the
controlshouldbere-initialized (see Pro-
grammingSection); iftheerrorcode
persists,have PCboard replaced
• Turnswitch toOFFposition, thenbackto
ON; ifdisplay shows “E-54B”,the
controlshouldbere-initialized (see Pro-
grammingSection); iftheerrorcode
persists,have PCboard replaced
• Turnswitch toOFFposition, thenbackto
ON; ifthe displayshows“E-6”, the
temperatureprobe shouldbechecked;
oncethe temperatureprobe isrepaired, or
replaced,thecontrols shouldreturnto
normal;if“E-6” persists, havethePC
boardreplaced

ModelHHC-990
“E-6B AIR TEMP SENSOR • Faulty air temperature
FAILED SHORTED” probe
“E-12A WATER HEATER • Faulty water
SENSOR FAILED heater probe
OPEN”
“E-12B WATER HEATER • Faulty water
SENSOR FAILED heater probe
CLOSED”
“E-17 HUMIDITY SENSOR • Faulty humidity sensor
FAILED”
“E-18 NO WATER, FLOAT • Float switch stuck or
SWITCH FAILED” faulty; faulty relay
(stuck on);water pan
needs cleaned;
loose or faulty water
heater sensor; acorn nuts
on water heater cover
loose, or water heater
insulationmissingor
damaged
A humidity error only shuts down the humidity system. If a humidity error occurs, and you want to
use the cabinet without humidity, turn the humidity off by following the directions for SP-4, Humidity
Setpoint, in Special Programming Section of this manual. Once the setpoint is off, the alarm stops,
but the error code shows in display. (Includes “E-12A”, “E-12B”, “E-17” and “E-18”).
5-2. ERROR CODESAND
WARNINGS (Continued)
Display Cause PanelBoardCorrection
• Turn switch to OFF position, then back to
ON; if the display shows “E-6”, the
temperature probe should be checked;
once the temperature probe is repaired, or
replaced, the controls should return to
normal; if “E-6”persists, have PC board
replaced
• Turn switch to OFF position, then back to
ON; if the display shows “E-12A”, the
water heater should be checked and
repaired or replaced (the water heater
probe is built into the water heater); the
controls should return to normal; if
“E-12A” persists, have PC board replaced
• Turn switch to OFF position, then back to
ON; if the display shows “E-12B”, the
water heater should be checked and
repaired or replaced (the water heater
probe is built into the water heater); the
controls should return to normal; if
“E-12B” persists, have PC board replaced
• Turn switch to OFF position, then back to
ON; if the display shows “E-17”, the
humidity sensor should be checked;
once the humidity sensor is repaired, or
replaced, the controls should return to
normal; if “E-17” persists, have PC board
replaced
• Turn switch to OFF position, then back to
ON; if the display shows “E-18”, check
and clean float switch; clean water pan;
have relay and water heater sensor
checked and replace if necessary; tighten
acorn nuts on water heater cover; make
sure insulation is under the water heater
cover; if “E-18” persists, have PC board
replaced
4-8 107

ModelHHC-990
5-2. ERROR CODESAND
WARNINGS (Continued)
“E-41 SYSTEMDATALOST” • Memory scrambled
“E-46 DATASAVEFAILED” • Memoryscrambled
“E-80 VENT STUCK OR • Vent onrear of module
BADSWITCH” stuckorfaultyvent
activation switch
“PLEASEDE-LIME • Water pan needs
WATER PAN” cleaned
“WATERLEVELLOW,PLEASE” • Water pan low on water
orempty
303 4-8
• Turnswitch toOFFposition, thenbackto
ON; ifthe displayshows “E-41”, the
controlshouldbere-initialized (see Pro-
grammingSection); if“E-41”persists,have
PC board replaced
• Turnswitch toOFFposition, thenbackto
ON; ifthe displayshows “E-46”, the
controlshouldbere-initialized (see Pro-
grammingSection); if“E-46”persists,have
PC board replaced
• Checkvent onrear of modulefor obstruc-
tions,orhaveventactivationswitch
replaced
• Followtheweekly cleaningprocedures;
thiswarningwillnotshutdownthe heat
orhumidity; if“PLEASEDE-LIME
WATER PAN”persists, have PCboard
replaced
• Fillwaterpan, in bottomofunit,to the
maximumwaterfillmark; thiswarning
won’tshutdowntheheatorhumidity
Display Cause PanelBoardCorrection