Henny Penny HHC-997 Operators Manual

Henny Penny

Humidified Holding Cabinets

Model HHC-990
Model HHC-992
Model HHC-993
Model HHC-996
Model HHC-997
Model HHC-998

TECHNICAL MANUAL

Model HHC-990/992/993/996/997/998

LIMITED WARRANTY FOR HENNY PENNY APPLIANCES

Subject to the following conditions, Henny Penny Corporation makes the following limited warranties to the

original purchaser only for Henny Penny appliances and replacement parts:

NEW EQUIPMENT: Any part of a new appliance, except lamps and fuses, which proves to be defective
in material or workmanship within two (2) years from date of original installation, will be repaired or
replaced without charge F.O.B. factory, Eaton, Ohio, or F.O.B. authorized distributor. To validate this
warranty, the registration card for the appliance must be mailed to Henny Penny within ten (10) days after
installation.

REPLACEMENT PARTS: Any appliance replacement part, except lamps and fuses, which proves to be
defective in material or workmanship within ninety (90) days from date of original installation will be
repaired or replaced without charge F.O.B. factory, Eaton, Ohio, or F.O.B. authorized distributor.

The warranty for new equipment and replacement parts covers only the repair or replacement of the defective
part and does not include any labor charges for the removal and installation of any parts, travel or other expenses
incidental to the repair or replacement of a part.

EXTENDED FRYPOT WARRANTY: Henny Penny will replace any frypot that fails due to manufacturing or
workmanship issues for a period of up to seven (7) years from date of manufacture. This warranty shall not cover
any frypot that fails due to any misuse or abuse, such as heating of the frypot without shortening.

0 TO 3 YEARS: During this time, any frypot that fails due to manufacturing or workmanship
issues will be replaced at no charge for parts, labor, or freight. Henny Penny will either install a
new frypot at no cost or provide a new or reconditioned replacement fryer at no cost.

3 TO 7 YEARS: During this time, any frypot that fails due to manufacturing or workmanship
issues will be replaced at no charge for the frypot only. Any freight charges and labor costs to
install the new frypot as well as the cost of any other parts replaced, such as insulation, thermal
sensors, high limits, fittings, and hardware, will be the responsibility of the owner.

Any claim must be presented to either Henny Penny or the distributor from whom the appliance was purchased.
No allowance will be granted for repairs made by anyone else without Henny Penny’s written consent. If damage
occurs during shipping, notify the sender at once so that a claim may be filed.

THE ABOVE LIMITED WARRANTY SETS FORTH THE SOLE REMEDY AGAINST HENNY PENNY
FOR ANY BREACH OF WARRANTY OR OTHER TERM. BUYER AGREES THAT NO OTHER REMEDY
(INCLUDING CLAIMS FOR ANY INCIDENT AL OR CONSEQUENTIAL DAMAGES) SHALL BE AVAILABLE.

The above limited warranty does not apply (a) to damage resulting from accident, alteration, misuse, or abuse;
(b) if the equipment’s serial number is removed or defaced; or (c) for lamps and fuses. THE ABOVE LIMITED
WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUD­ING MERCHANTABILITY AND FITNESS, AND ALL OTHER W ARRANTIES ARE EXCLUDED. HENNY
PENNY NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY OTHER
OBLIGA TION OR LIABILITY.

FM06-005

Revised 07-30-07

Model HHC-990/992/993/996/997/998

TABLE OF CONTENTS

Section Page

Section 1. TROUBLESHOOTING

1-1. Introduction ................................................................................................................. 1-1

1-1. Safety .......................................................................................................................... 1-1

1-3. Troubleshooting .......................................................................................................... 1-1

1-4. Error Codes and Warnings .......................................................................................... 1-5

1-5. Info Mode.................................................................................................................... 1-8

Section 2. LEVEL 2 PROGRAMMING

2-1. Introduction ................................................................................................................. 2-1

2-2. Tech Mode................................................................................................................... 2-1

2-3. Stats Mode................................................................................................................... 2-5

2-4. Data Logging and Manufacturing Mode..................................................................... 2-8

Section 3. MAINTENANCE

3-1. Introduction ................................................................................................................. 3-1

3-2. Maintenance Hints ...................................................................................................... 3-1

3-3. Humidity Sensor Calibration and Replacement .......................................................... 3-1

3-4. Fuse and Fuse Holder Assembly ................................................................................. 3-4

3-5. Power Switch Replacement ........................................................................................ 3-5

3-6. Air Temperature Probe Replacement .......................................................................... 3-6

3-7. Transformer Replacement ........................................................................................... 3-8

3-8. Food Probe Receptacle Replacement.......................................................................... 3-8

3-9. Relay Replacement ..................................................................................................... 3-9

3-10. Module Top Removal.................................................................................................. 3-10

3-11. Cooling Fan Replacement........................................................................................... 3-11

3-12. High Limit - Air Heater Replacement......................................................................... 3-11

3-13. Blower Motor Replacement ........................................................................................ 3-12

3-14. Air Heater Replacement .............................................................................................. 3-13

3-15. Speaker Replacement .................................................................................................. 3-13

3-16. Complete Panel or PC Board Replacement ................................................................ 3-14

3-17. Float Switch Replacement .......................................................................................... 3-15

3-18. High Limit - Water Heater Replacement..................................................................... 3-16

3-19. Water Heater Replacement .......................................................................................... 3-17

3-20. Drain Valve Replacement............................................................................................ 3-18

3-21. Door Gasket Replacement .......................................................................................... 3-19

3-22. Vent Motor Replacement ............................................................................................ 3-19

3-23. Vent Motor Microswitch Replacement ....................................................................... 3-20

Wiring Diagrams......................................................................................................... 3-21

Section 4. PARTS INFORMATION

4-1. Introduction ................................................................................................................. 4-1

4-2. Genuine Parts .............................................................................................................. 4-1

4-3. When Ordering Parts................................................................................................... 4-1

4-4. Prices ........................................................................................................................... 4-1

4-5. Delivery....................................................................................................................... 4-1

4-6. Warranty...................................................................................................................... 4-1

4-7. Recommended Spare Parts for Distributors ............................................................... 4-1

Parts List ..................................................................................................................... 4-2

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Model HHC-990/992/993/996/997/998

SECTION 1. TROUBLESHOOTING

1-1. INTRODUCTION

This section provides troubleshooting information in the form
of an easy to read table.

If a problem occurs during the first operation of a cabinet,
recheck the installation per the Installation Section of the
Operator’s Manual

Before troubleshooting, always recheck the operation proce­dures in the Operator’s Manual.

1-2. SAFETY Where information is of particular importance or is safety

related, the words NOTICE, CAUTION, or WARNING are
used. Their usage is described below.

SAFETY ALERT SYMBOL is used with DANGER,
WARNING, or CAUTION which indicates a personal
injury type hazard.

NOTICE is used to highlight especially important
information.

1-3. TROUBLESHOOTING

CAUTION used without the safety alert symbol indicates
a potentially hazardous situation which, if not avoided,
may result in property damage.

CAUTION used with the safety alert symbol indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.

WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.

To isolate a malfunction, proceed as follows:

1. Clearly define the problem or symptom and when it occurs.

2. Locate the problem in the troubleshooting table.

3. Review all possible causes. Then, one at a time work through
the list of corrections until problem is solved.

If maintenance procedures are not followed correctly,
injuries and/or property damage could result.

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Model HHC-990/992/993/996/997/998

1-3. TROUBLESHOOTING (continued)

Problem Cause Correction

OPERATION

A. Product not • Doors left open • Keep doors closed except
holding temperature to load and serve product

• Product held too long • Hold product only for recom­ mended times

• Control temperature set too low • Increase air temperature
setpoint
(SP-3) in Special Program Mode

• Bad air heater • Check heaters and replace if bad
See Tech Mode items 10 and 18

• Blower not working • Check blower and replace if bad
See Tech Mode item 20

• Bad air heater, or blower relays • Replace relay
See Tech Mode items 10 and 18

• Bad high limit • Check high limit and replace if
bad

• Low or improper voltage • Compare receptacle voltage to
data plate voltage

• Door gasket torn or worn • Replace bad door gaskets

• Air probe faulty, open (“E-6A”), • Ohm out the probe and replace

or shorted (“E-6B”) if necessary

B. Cabinet steaming • Humidity setpoint too high • Decrease humidity setpoint
or product soggy (SP-4) in Special Program Mode

• Water heater probe faulty, open • Ohm out the probe and replace

(“E-12A”), or closed (“E-12B”) if necessary

• Bad humidity sensor (“E17”) • Replace humidity sensor

• Relay stuck closed • Replace relay

• Vent stuck closed (“E-80”) • Bad vent motor - replace

• Bad vent motor relay - replace­ See Tech Mode item 20

• Check alignment and condition
of mechanical vent parts

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Model HHC-990/992/993/996/997/998

1-3. TROUBLESHOOTING (continued)

Problem Cause Correction

OPERATION (Continued)

C. Product dry • Bad float switch (“E-18”) • Replace float switch

• Bad water heater high limit • Replace high limit

• Bad water heater • Check heater and replace if bad;
see Tech Mode item 20

• Humidity setpoint too low • Increase humidity setpoint

(SP-4) in Special Program Mode

• No water in pan • Pour water in water pan

• Vent stuck open (“E-80”) • Bad vent motor - replace; see
Tech Mode item 20

• Bad vent motor relay - replace

• Check alignment and condition
of mechanical vent parts

HEATING SYSTEM

A. Unit not heating • Bad control board • Replace control board

• Bad high limit • Check high limit; replace if bad

• Bad air heater or blower relays • Replace relay

• Bad air heater • Check heaters and replace if bad;
see Tech Mode item 20

• Faulty wiring • Check for loose connections or
broken wires

• Blown Fuse • Change 15 amp fuse

B. Unit not reaching set • Blower not working. • Check Blower and replace if bad;
temperature see Tech Mode item 20

• Bad air heater • Check heaters and replace if bad;
see Tech Mode item 20

• Bad air heater, or blower relays • Replace relay

• Doors left open • Keep doors closed except
to load and serve product

• Door gasket torn or worn • Replace bad door gaskets

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1-3. TROUBLESHOOTING (continued)

Problem Cause Correction

HEATING SYSTEM (Continued)

C. Unit Overheating • Blower not working • Check blower and replace if bad
(“E-5”) See Tech Mode item 20

• Bad control board • Replace control board

• Relay stuck closed • Replace relay

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Model HHC-990/992/993/996/997/998

1-4. ERROR CODES AND The display shows the following error codes and warnings when a
WARNINGS fault is detected, along with an alarm sound. Both the heat and

humidity systems shut down, except when specified otherwise.

Display Cause Panel Board Correction

“E-4 CPU TOO HOT” • Control board too hot;

unit overheating or
louvers clogged

“E-5 AIR TEMP TOO HOT” • Faulty relay , PC board,

or air probe

“E-54A CPU TEMP SENSOR • Faulty PC board

OPEN”

• Turn switch to OFF position, then back to
ON; if display still shows “E-4”, the PC
board is getting too hot; clean louvers and
check cooling fan; if cooling fan is not
working, have it replaced; once panel
cools down, the controls should return to
normal; if “E-4” persists, have the PC
board replaced

• Turn switch to OFF position, then back to
ON; if display shows “E-5”, the heating
circuits and temperature probe should be
checked; once the unit cools down, the
controls should return to normal; if “E-5”
persists, have the PC board replaced

• Turn switch to OFF position, then back to
ON; if display shows “E-54A”, the
control should be re-initialized (see Pro­gramming Section); if the error code
persists, have PC board replaced

“E-54B CPU TEMP SENSOR • Faulty PC board

SHOR TED”

• Turn switch to OFF position, then back to
ON; if display shows “E-54B”, the
control should be re-initialized (see Pro­gramming Section); if the error code
persists, have PC board replaced

“E -6 A AIR TEMP SENSOR • Faulty air probe

F AILED OPEN”

• 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 the PC
board replaced

804 1-5

1-4. ERROR CODES AND
WARNINGS (Continued)

Display Cause Panel Board Correction

“E-6B AIR TEMP SENSOR • Faulty air temperature

FAILED SHORTED” probe

Model HHC-990/992/993/996/997/998

• 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

“E-12A WATER HEATER • Faulty water

SENSOR FAILED heater probe
OPEN”

“E-12B WA TER HEATER • Faulty water

SENSOR FAILED heater probe
CLOSED”

“E-17 HUMIDITY SENSOR • Faulty humidity sensor

FAILED”

• 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

“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
insulation missing or
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”).

1-6 804

• 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 2 complete pieces of insulation are
under the water heater cover; if “E-18”
persists, have PC board replaced

1-4. ERROR CODES AND
WARNINGS (Continued)

Display Cause Panel Board Correction

Model HHC-990/992/993/996/997/998

“E-41 SYSTEM DA T A LOST” • Memory scrambled

“E-46 DA T A SA VE F AILED” • Memory scrambled

“E-80 VENT STUCK OR • V ent on rear of module
BAD SWITCH” stuck or faulty vent

activation switch

“PLEASE DE-LIME • Water pan needs
W ATER P AN” cleaned

• Turn switch to OFF position, then back to
ON; if the display shows “E-41”, the
control should be re-initialized (see Pro­gramming Section); if “E-41”persists, have
PC board replaced

• Turn switch to OFF position, then back to
ON; if the display shows “E-46”, the
control should be re-initialized (see Pro­gramming Section); if “E-46”persists, have
PC board replaced

• Check vent on rear of module for obstruc­tions, or have vent activation switch
replaced

• Follow the weekly cleaning procedures;
this warning will

not shut down the heat
or humidity; if “PLEASE DE-LIME
W ATER PAN” persists, have PC board
replaced

“W A TER LEVEL LOW , PLEASE” • W ater pan low on water

or empty

• Fill water pan, in bottom of unit, to the
maximum water fill mark; this warning
won’t shut down the heat or humidity

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Model HHC-990/992/993/996/997/998

1-5. INFO MODE This mode records historic information on the holding cabinet

and operator performance, which could help in troubleshooting
a problem.

This mode records historic information on the unit and operator
performance. Press and at the same time and

“*INFO MODE*” shows on display. Press or to

access the steps and press to view the statistics within
each step.

Information Mode is intended for technical use, but the opera­tor can view the following information:

1. Error Log - last 10 errors and time they occurred

2. Power Up Log - time of last 10 power-ups

3. Outputs/Inputs - shows the state of unit’s inputs and
outputs

a. OUT V_F_W_A (vent motor, fan, water heater, air

heater, relay order from left to right)

b. AMPS V_F_W_A_

c. NC/GD V_F_W_A_ (no connect/ground detection on

outputs to relays)

d. All outputs and inputs V_F_W_A_ P_ (power switch

input) E_(exhaust vent switch input) F_ (float switch
input)

4. Vent - open or closed

5. CPU temperature

6. Cabinet air temperature

7. Water heater temperature

8. Food probe temperature

9. Humidity counts value

10. Humidity value

11. Analog inputs

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Model HHC-990/992/993/996/997/998

1-5. INFO MODE (Continued)

1. E-LOG (error code log)

Press and “1A. (date & time) *NOW*” shows in display.

This is the present date and time.

Press and if a error was recorded, “1B. (date, time, and
error code information)” shows in display. This is the latest
error code that the controls recorded.

Press and the next latest error code information can be
seen. Up to 10 error codes (1B to 1K) can be stored in the E­LOG section.

Press to continue to P-LOG.

2. P-LOG (power-up log)

Press and “2A. (date & time) *NOW*” shows in display.

This is the present date and time.

Press and the latest power-up is shown, “2B. (date, time,)
PWR-UP”.

Press and the next latest power-up date is shown. Up

to 10 power-ups (2B to 2K) can be stored in the P-LOG
section.

Press to continue onto the Outputs/Inputs.

3. OUTPUTS/INPUTS

This mode displays the status of components and inputs. If the
input or output signal is detected, an identifying letter is
displayed (see below). If the signal is not detected, “_” is
displayed. Press to view the following:

a. “V_F_W_A_” shows in the display. If the output is on,

“*” shows beside the output letter. Ex: “V*”. If the
control senses a problem with the output, “*” flashes.

b. “AMPS V_F_W_A_” shows in the display. A

checkmark (“√” ) beside the letter indicates normal amps .
A flashing “X” beside the letter means a problem exists.

c. “NC/GD V_F_W_A_” shows in the display. This

monitors a possible problem with the relays on the output
PC board. A checkmark (“√” ) beside the letter indicates
means everything on the output PC board is good. A
flashing “X” beside the letter means a problem exists.

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Model HHC-990/992/993/996/997/998

1-5. INFO MODE (Continued) 3. OUTPUTS/INPUTS (Continued)

d. V_F_W_A_ P_E_F_ shows in the display. If the output
or input signal is detected, “*” shows beside the letter. Ex:
“V*”. If the control senses a problem with the output, “*”
flashes.

Press to continue onto VENT.

4. VENT

This indicates whether the vent is open or closed.

Press to continue onto CPU TMP.

5. CPU TMP

This step shows the present PC board temperature.

Press to continue onto the Cabinet Air TMP.

6. CABINET AIR TMP

This step shows the present air temperature inside the cabinet.

Press to continue onto the Water Heater TMP.

7. WA TER HEATER TMP

This step shows the present water heater temperature.

Press to continue to Food TMP.

8. FOOD TMP

This step shows the present food probe temperature, if used.

Press to continue onto Humidity Counts Value.

9. HUMIDITY COUNTS VALUE

Factory use only!

Press to continue onto the Humidity Value.

10. HUMIDITY VALUE

This step shows the present humidity level inside the cabinet.

Press to continue onto the Analog Inputs.

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Model HHC-990/992/993/996/997/998

1-5. INFO MODE (Continued) 11. ANALOG INPUTS (Continued)

This step displays the present status of any channel of the controller’s a
to d converter. This feature may be useful to a technician
troubleshooting a problem with the controller .

The displayed value can be toggled between volts and bits by
pressing . If the displayed value has a decimal point, it is

voltage (0 to 5 VDC). If no decimal point is shown, the value is
a-to-d bits (0 - 4095).

903 1-11

Model HHC-990/992/993/996/997/998

SECTION 2. LEVEL 2 PROGRAMMING

2-1. INTRODUCTION

2-2. TECH MODE

The Tech Mode and Stats Mode in the Level 2 Programming,
have information that could help in troubleshooting a problem
with the unit.

Press and hold until “L-2 LEVEL 2”, followed by,
“CLOCK SET”, shows in display.

Press 3 times and “TECH”, followed by, “ENTER CODE”
shows in display .

Enter code, to access
the following items:

T-1 Software
T-2 Cabinet version
T-3 Push button test
T-4 All on display test
T-5 Segments test
T-6 Digits test
T-7 Decimal points test
T-8 LED test

T-9 Air temperature - circuit calibration
T-10 Air temperature - user calibration/offset/highest value
T-11 Water heater temperature - circuit calibration
T-12 W ater heater temperature - user calibration/of fset/highest

value
T-13 Food temperature - circuit calibration
T-14 Food temperature - user calibration/offset/highest value
T-15 Humidity - circuit calibration
T-16 Humidity sensor – calibration/offset; specific value sent

with each humidity sensor
T-17 Humidity- user calibration/offset/highest value
T-18 CPU° - control temperature - highest value
T -19 View ADC channel
T-20 Outputs/Inputs; on outputs steps use the following

hidden buttons [1-4] to toggle on the outputs; [1] - vent

motor [2] - circulation fan, [3] - water heater, [4] - air

heater
T-21 T otal init – initialization of programming areas and

statistics

moves you forward through the above selections and
moves you backwards through the selections.

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Model HHC-990/992/993/996/997/998

2-2. TECH MODE (Continued)

T-1: Software

This section shows “PN/ID/SRL”
Press . Henny Penny EPROM part number is displayed.

Press . Customer ID (i.e. Wendy’s) is displayed

Press . Software revision is displayed.

T-2: Cabinet Version

This section shows the model number, e.i. HHC-993.

T3: Push Button Test

Press any button on the control and a digital display feedback
confirms the button is working.

T4: All On Display Test

Press any of the product buttons and every LED on the 16 digit
display lights.

T5: Segments Test

Repeatedly pressing any product button lights one segments in
every one of the 16 digit displays.

T6: Digits Test

Repeatedly pressing any product button lights all segments in
one of the 16 digital displays. (Scrolls though all 16.)

T7: Decimal Point Test

Repeatedly pressing any product button lights a decimal point
(DP) in one of the 16 digital displays. (Scrolls though all 16.)

T8: LED Test

Repeatedly pressing any product button lights individual
LEDs. (Scrolls though all LEDs.)

T9: Air T emperature - Circuit Calibration

Factory use.

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