Henny Penny MPC-1L Service Manual
Henny Penny
Multipurpose Holding Cabinet
Model MPC-554
Model MPC-1L
Model MPC-22
FM06-038-B
TECHNICAL MANUAL
Model MPC-1L, MPC-22, MPC-554
TABLE OF CONTENTS
Section Page
Preface SAFETY AND COMPLIANCE ........................................................................................... ii
WARRANTY......................................................................................................................... iii
Section 1 TROUBLESHOOTING ........................................................................................................ 1-1
1-1. Introduction ................................................................................................................. 1-1
1-2. Safety ........................................................................................................................... 1-1
1-3. Test Instrument ............................................................................................................ 1-2
1-4. Troubleshooting ........................................................................................................... 1-2
1-5. Error Codes .................................................................................................................. 1-4
Section 2. SPECIAL PROGRAMMING MODE................................................................................... 2-1
2-1 Introduction ................................................................................................................. 2-1
2-2 Accessing Special Programming Mode....................................................................... 2-1
2-3 Entering Password....................................................................................................... 2-1
2-4 Programming Descriptions.......................................................................................... 2-2
Section 3. MAINTENANCE ................................................................................................................. 3-1
3-1. Introduction ................................................................................................................. 3-1
3-2. Maintenance Hints ....................................................................................................... 3-1
3-3. Control Board Replacement ........................................................................................ 3-1
3-4. Transformer Replacement ........................................................................................... 3-2
3-5. Relay Replacement ...................................................................................................... 3-3
3-6. Power Switch & LED Replacement ............................................................................ 3-5
3-7. MPC-554 Liner/Heater Assy. Replacement ................................................................ 3-6
3-8. MPC-22 & MPC-1L Liner/Heater Assy. Replacement ............................................... 3-8
3-8. Wiring Diagrams ......................................................................................................... 3-9
Section 4. PARTS INFORMATION....................................................................................................... 4-1
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. Recommended Spare Parts for Distributors ................................................................ 4-1
i FM06-038-BOct. 2018
Model MPC-1L, MPC-22, MPC-554
PREFACE:SAFETY AND COMPLIANCE
These are the original version controlled Henny Penny instructions for Multipurpose Holding Cabinet
(MPC) Model MPC - 554, 1L, and 22. This manual is available on the Henny Penny Public website
(www.hennypenny.com). Read these instructions completely prior to installation and operation of
this appliance to ensure compliance to all required installation, operation and safety standards. Read
and obey all safety messages to avoid damage to the appliance and personal injury.
This appliance is intended for commercial use in kitchens of restaurants, bakeries, hospitals, etc. but
not for the continuous mass production of food such as in a factory setting. During use the units
airborne A-weighted emission sound pressure is below 70 db(A). All repairs must be performed by
the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.
Always use strain relief. Install the provided power cord with the ground wire dimensioned to fail last.
If the supplied power cord or an existing one becomes damaged, do not use it; rather, replace it with
a known good power cord.The power cord must be replaced by the manufacturer, its service agent or
similarly qualied persons in order to avoid a hazard.
Proper daily, weekly, monthly, quarterly and yearly maintenance must be performed on this
appliance to ensure safe and continuous operation. This appliance must never be cleaned with a
water jet or steam cleaning tool. Cleaning brushes are shipped with the appliance and proper
cleaning instructions are included in this manual.
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
This appliance is not intended to be operated by means of an external timer or a separate remote
control system.
iiOct. 2018 FM06-038-B
Model MPC-1L, MPC-22, MPC-554
LIMITED WARRANTY FOR HENNY PENNY EQUIPMENT
Subject to the following conditions, Henny Penny Corporation makes the following limited warranties to the original pur-
chaser only for Henny Penny appliances and replacement parts:
NEW EQUIPMENT: Any part of a new appliance, except baskets, 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. Baskets will be repaired or replaced for ninety (90)
days from date of original installation. Lamps and fuses are not covered under this Limited Warranty. To validate this
warranty, the registration card for the appliance must be mailed to Henny Penny within ten (10) days after installation.
FILTER SYSTEM: Failure of any parts within a fryer lter system caused by the use of the non-OEM lters or
other unapproved lters is not covered under this Limited Warranty.
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 covers the repair or replacement of the defective part and includes labor charges and
maximum mileage charges of 200 miles round trip for a period of one (1) year from the date of original installation.
The warranty for 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, ttings, 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 led.
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 INCIDENTAL 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 WARRANTIES ARE EXCLUDED. HENNY PENNY NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY OTHER OBLIGATION OR LIABILITY.
Revised 01/01/07
iii FM06-038-BJune 2007
Model MPC-1L, MPC-22, MPC-554
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 rst operation of a new cabinet.
1-2. SAFETY The Henny Penny unit has many safety features incorporated.
However, the only way to ensure safe operation is to fully
understand the proper installation, operation, and
maintenance procedures. The instructions in this manual have
been prepared to aid you in learning the proper procedures.
Where information is of particular importance or is safety
related, the words DANGER, WARNING, CAUTION,
or NOTICE are used. Their usage is described as follows:
DANGER! indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING! indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury.
NOTICE is used to for information considered important
regarding property damage.
NOTE: is used to highlight especially important information
SHOCK HAZARD SYMBOL
HOT SURFACE SYMBOL
1-1 FM06-038-BOct. 2018
Model MPC-1L, MPC-22, MPC-554
These two test instruments will help to check the electrical
1-3. TEST INSTRUMENTS
components:
1. A voltmeter
2. An ohmmeter.
When the manual refers to the circuit being closed, the ohmme-
ter should read zero unless otherwise noted. When the manual
refers to the circuit being open, the ohmmeter will read innite
resistance.
Do not use an ohmmeter to check solid state relays. Use a
voltmeter as decribed in the Troubleshooting Section.
1-4. TROUBLESHOOTING To isolate a malfunction, proceed as follows:
1. Clearly dene 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 the problem is
solved.
PROBLEM CAUSE CORRECTION
With power switch in • Open circuit • Check to see that unit is
POWER position, unit plugged in
is completely
inoperative (no power) • Check breaker or fuse at
supply box
• Check voltage at wall
receptacle
• Check POWER switch;
replace if defective
• Check internal component
connectors, and the cord and plug,
for loose connections
• Transformer defective • Check input and output voltage;
replace if defective
• Control board defective • Check for 12 volt input from
transformer; if control board shows
12 volts, replace control board
1-2Oct. 2018 FM06-038-B
Model MPC-1L, MPC-22, MPC-554
1-4. TROUBLESHOOTING (Continued)
PROBLEM CAUSE CORRECTION
Unit will not heat
• Control board not calling
for heat
• Verify set-point reading; if zone (see Zone
Positions at left) tempeature is below
setpoint and not calling for heat
(no 5 vdc), control board defective
Individual zone does
• Faulty heat relay
not heat
MPC-554
ZONE POSITIONS
Top
Bottom
V1901-RH
Side
To avoid electrical shock, make connections before applying power, take
reading, and remove power before
Side
Top
Bottom
removing meter leads. The following
checks are performed with the wall
circuit breaker closed and the main
V1901-LH
power switch in the ON position.
Testing for proper relay operation:
1. With no power (5 vdc) going to the relay,
120 volts should show on the output side
of the relay, and 0 volts on the input
(5 volts). If no 120 volts, check for open
heater, and if heater is OK, replace relay.
2. With the component energized, 0 volts
should show on the output side of the relay,
and 5 vdc on the input side. If not,
replace relay. Also, check for reverse
polarity of 5 vdc to relay-reference wiring
diagram.
3. If voltage varies from steps 1 and 2,
remove power to unit pull input wires from
relay and place leads of meter onto input
wires. Reapply power to unit. When unit
is running, if the input wires to relay shows
5vdc, the relay is faulty.
• Faulty heater
• Faulty heater RTD
• Refer to wiring diagrams in back of this
manual, and with the outputs on, check
across terminal #1 of the appropriate
relay and the neutral wire (#N5 on 554 or
#N2 on 1L or 22) at the transformer. If
meter shows full voltage (120V), but
heater is not heating, replace heater and
liner assy.
• Refer to wiring diagrams in back of this
manual, and disconnect 15-pin connector
at control board. With an ohm meter,
check between the appropriate terminals
on connector and the corresponding termi nal on the terminal block. Meter should
read 35 to 41 ohms at room temperature.
Replace liner and heater assy if necessary
• Refer to wiring diagram page 2-9, and
disconnect 15-pin connector at control
board. With an ohm meter, check between
the appropriate terminals on connector,
based upon which RTD is being checked.
Meter should read about 1080 ohms at
room temperature. Replace liner and
heater assy. if necessary.
1-3 FM06-038-BJuly 2011
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