Whirlpool WRT138FZDB SERIES User manual

TECHNICAL EDUCATION
JOB AID W10329932
L-84
Vertical Modular
Washer
R-122
SERVICE MANUAL
“MATRIX”
18.2 CU FT TOP MOUNT REFRIGERATOR
W10881764
WRT138FZDB**, WRT138FZDM**, WRT138FZDW**
*All Engineering Versions

ii n 18.2 Cu Ft Top Mount Refrigerator
FORWARD
This Whirlpool Service Manual, (Part No. W10881764), provides the In-Home Service Professional with
service informaon for the “18.2 CU FT TOP MOUNT REFRIGERATOR.”
The Wiring Diagrams used in this Service Manual are typical and should be used for training purposes
only. Always use the Wiring Diagram supplied with the product tech sheet when servicing the
refrigerator.
For specic operang and installaon informaon on the model being serviced, refer to the “Use and
Care Guide” or “Installaon Instrucons” provided with the refrigerator.
GOALS AND OBJECTIVES
The goal of this Service Manual is to provide informaon that will enable the In-Home Service
Professional to properly diagnose malfuncons and repair the “18.2 CU FT TOP MOUNT REFRIGERATOR.”
The objecves of this Service Manual are to:
• Understand and follow proper safety precauons.
• Successfully troubleshoot and diagnose malfuncons.
• Successfully perform necessary repairs.
• Successfully return the refrigerator to its proper operaonal status.
WHIRLPOOL CORPORATION assumes no responsibility for any repairs made on our
products by anyone other than authorized In-Home Service Professionals.
Copyright © 2016, Whirlpool Corporaon, Benton Harbor, MI 49022

18.2 Cu Ft Top Mount Refrigerator n iii
TABLE OF CONTENTS
18.2 Cu Ft Top Mount Refrigerator
 SECTION1—GENERALINFORMATION
REFRIGERATOR SAFETY ......................................................................................................................1-2
MODEL & SERIAL NUMBER LABEL LOCATION....................................................................................1-3
TECH SHEET LOCATION.......................................................................................................................1-3
NOTES .................................................................................................................................................1-4
SECTION2—THEORYOFOPERATION
DIAGNOSTICS & TROUBLESHOOTING: SAFETY INFORMATION ........................................................2-2
POWER DISTRIBUTION.......................................................................................................................2-3
REFRIGERATION SYSTEM....................................................................................................................2-4
WATER & ICE SYSTEM .........................................................................................................................2-5
DEFROST SYSTEM ...............................................................................................................................2-5
LIGHTING SYSTEM ..............................................................................................................................2-5
NOTES .................................................................................................................................................2-6
SECTION3—DIAGNOSTICS&COMPONENTACCESS
DIAGNOSTICS .....................................................................................................................................3-2
COMPONENT ACCESS.........................................................................................................................3-3

iv n 18.2 Cu Ft Top Mount Refrigerator
PRODUCT SPECIFICATIONS & WARRANTY INFORMATION SOURCES (inside back cover)

GENERAL INFORMATION
18.2 Cu Ft Top Mount Refrigerator n 1-1
Section 1:
General Information
This secon provides general safety, parts, and informaon for
the “18.2 Cubic Foot Top Mount Refrigerator”
nRefrigerator Safety
nModel & Serial Number Locaon
nTech Sheet Locaon

1-2 n 18.2 Cu Ft Top Mount Refrigerator
GENERAL INFORMATION
Refrigerator Safety
You can be killed or seriously injured if you don't immediately
You can be killed or seriously injured if you don't follow
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.”
These words mean:
follow instructions.
instructions.
DANGER
WARNING

GENERAL INFORMATION
18.2 Cu Ft Top Mount Refrigerator n 1-3
Model & Serial Number Locaon
The Model & Serial Number tag is located in the Refrigerated Compartment on the le side liner near the top (Figure 1).
Tech Sheet Locaon
The Tech Sheet is located on the boom rail of the machine compartment in the rear of the unit (Figure 2).
FIGURE 2: Tech Sheet Location
FIGURE 1: Model & Serial Number location

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GENERAL INFORMATION
Notes

THEORY OF OPERATION
18.2 Cu Ft Top Mount Refrigerator n 2-1
Section 2:
THEORY OF OPERATION
This secon provides informaon on Theory of Operaon for
the “18.2 Cu Ft Top Mount Refrigerator.”
nPower Distribuon
nRefrigeraon System
nDefrost System
nLighng System
nComponent Access
nDiagnosc & Troubleshoong

2-2 n18.2 Cu Ft Top Mount Refrigerator
THEORY OF OPERATION
For Service Technician Use Only
Voltage Measurement Safety Information
When performing live voltage measurements, you must do the following:
nVerify the controls are in the off position so that the appliance does not start when energized.
nAllow enough space to perform the voltage measurements without obstructions.
nKeep other people a safe distance away from the appliance to prevent potential injury.
nAlways use the proper testing equipment.
nAfter voltage measurements, always disconnect power before servicing.
IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics
ESD problems are present everywhere. Most people begin to feel an ESD discharge at approximately
3000V. It takes as little as 10V to destroy, damage, or weaken the main control assembly. The new
main control assembly may appear to work well after repair is nished, but a malfunction may occur
at a later date due to ESD stress.
nUse an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted
metal in the appliance
-OR-
nTouch your nger repeatedly to a green ground connection point or unpainted metal in the
appliance.
nBefore removing the part from its package, touch the anti-static bag to a green ground
connection point or unpainted metal in the appliance.
nAvoid touching electronic parts or terminal contacts; handle electronic control assembly by
edges only.
nWhen repackaging main control assembly in anti-static bag, observe above instructions.
IMPORTANT SAFETY NOTICE — “For Technicians only”
This service data sheet is intended for use by persons having electrical, electronic, and mechanical
experience and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property damage. The
manufacturer or seller cannot be responsible, nor assume any liability for injury or damage of any
kind arising from the use of this data sheet.
DANGER
Electrical Shock Hazard
Only authorized technicians should perform diagnostic
voltage measurements.
After performing voltage measurements, disconnect
power before servicing.
Failure to follow these instructions can result in death or
electrical shock.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Re place all parts and panelsbefore operating.