Whirlpool WBM35LW User manual

WHIRLPOOL CONSUMER SERVICES Models WBM35LW
WBM35LS
WBM39LW
WBM39LS
WBM46LW
WBM46LS
March 2003
This Service Manual supersedes Service Manual, Part No. SM1100, dated July 02.
Please remove and destroy the superseded manual.
Copyright © 2002 Whirlpool (Australia) Pty. Limited
All rights strictly reserved. Reproduction or issue to third parties in any form whatsoever is not
permitted without written authority of Whirlpool (Australia) Pty. Limited
Whirlpool is a registered trademark of Whirlpool U.S.A.
This documentation is intended only for qualified technicians who possess the required qualifications and are
aware of the regulatory requirements applicable to servicing electrical appliances.
Whirlpool (Australia) Pty Limited Part No. SM1101
A. B. N. 28 003 578 023
WHIRLPOOL AUSTRALASIA
CONSUMER SERVICES
SERVICE MANUAL
ELECTRONIC
TOP MOUNT REFRIGERATOR
Model Version
WMB35LW 8534 772 53000
WBM35LS 8534 772 53010
WMB39LW 8534 773 53000
WBM39LS 8534 773 53010
WMB46LW 8534 774 53000
WBM46LS 8534 774 53010

WHIRLPOOL CONSUMER SERVICES Models WBM35LW
WBM35LS
WBM39LW
WBM39LS
WBM46LW
WBM46LS
Page 1 of 34
CONTENTS
Page
1. IDENTIFICATION 2
2. TECHNICAL SPECIFICATIONS 3
3. FUNCTIONAL CHARACTERISTICS 3
3.1. Lamp Activation System 3
3.2. Product Electronic Control System 4
3.2.1. Freezer Temperature Control 5
3.2.2. Refrigerator Temperature Control 6
3.2.3. Fan Motor Operation 6
3.2.4. Door Opening Management 6
3.2.5. Freezer Freezing Level Selection 7
3.2.6. Defrost System 7
3.2.6.1. Defrost Problems 8
3.2.7. Alarm System 8
3.2.7.1. 2Hz Alarm 10
3.2.7.2. 4Hz Alarm 12
4. TESTS
4.1. Test Routine on Electronic Board 16
4.2. Self Test General Notes 17
5. OTHER COMPONENTS 17
5.1. Cooling Fluid (Refrigerant) 17
5.2. Cabinet 17
5.3. Compressor 18
5.4. Evaporator and Suction Line 18
5.5. Filter/Dryer 18
5.6. Kickplate 18
5.7. Doors and Gaskets 19
5.8. Clicking Stop Bushing 19
5.9. Rollers and Levelling Feet 20
5.10. Vegetable Crisper Humidity Control 20
5.11. Neutraliser 20
5.12. Clean Back 20
5.13. Can Rack 21
5.14. Capacitor 21
6. COMPONENT ASSEMBLY, DISASSEMBLY AND REPLACEMENT 21
6.1. Disassembling the Evaporator Front and Rear Covers 21
6.2. Replacing the Bimetallic and Thermofuse 22
6.3. Replacing the Defrost Heater 22
6.4. Replacing the Air Diffuser and Damper 22
6.5. Assembling and Disassembling the Refrigerator Internal Components 22
6.6. Replacing the Fan Motor 23
6.7. Replacing the Temperature Sensor 23
6.8. Replacing a Cable Connection for the Potency Module 26
6.9. Replacing Evaporator 26
6.10. Replacing or Removing the Cleanback 27
7. REVERSING DOOR SWING (OPTIONAL) 28
8. REQUIRED TOOLS 31
9. WIRING DIAGRAM 32
10. FAILURE CORRECTION CHART 33

MSEX0025_rev01 2
1 – IDENTIFICATION :
1.1 – Multibras Version
W R M 34 A B Z WL
EX = MARKET: WL = AUSTRALIA
D = VOLTAGE: Z= 220-240/50Hz, D=220/50Hz
B = COLOR B= WHITE, P= SILVER, R= INOX
A = VERSION: A= FIRST, X= INOX VERSION
34 = CAPACITY: 34=340 LITERS,
38=380 LITERS,
44=440 LITERS
M = TYPE: NO FROST
R = PRODUCT: REFRIGERATOR
W = BRAND: WHIRLPOOL
1.2 – Multibras Serial Number
X X X XXXXXX
The first digit indicates the Factory Plant (in Brasil), identified by a letter as follows:
C– Rio Claro Plant P– São Paulo Plant
S– São Bernado Plant J– Joinville Plant
I– Imported Products M– Manaus Plant
The second digit indicates the manufacturing month of the product:
A– January D– April G– July J– October
B– February E– May H– August L– November
C– March F– June I– September M– December
4th to 9th Digit: Serial Number (Sequential)
3rd Digit: Manufacturing Year
2nd Digit: Manufacturing Month
1st Digit: Factory

MSEX0025_rev01 3
The third digit indicates the manufacturing year of the product:
8– 1998 1– 2001 4– 2004 7– 2007
9– 1999 2– 2002 5– 2005 8– 2008
0– 2000 3– 2003 6– 2006 9– 2009
The following six digits indicate the product manufacturing sequential:
Example: 000001, 000002, ..
2 – TECHNICAL SPECIFICATIONS :
Characteristics MODEL WRM34, WBM35 WRM38, WBM39 WRM44, WBM46
VOLTS (V) 220/240 220/240 220/240
FREQUENCY (Hz) 50 50 50
CURRENT ( A ) 0,7 0,7 0,7
POWER ( W ) 145 145 145
HEATER POWER ( W ) 190 225 225
CIRCUIT BREAKER ( A ) 10 10 10
POWER CONSUMPTION (Kwh/ year) 571 581 616
REFRIGERANT LOAD 90 95 100
COMPRESSOR MODEL TPH1380YXC TPH1380YXC TPH1380YXC
(R-134A / TECUMSEH) TP152JR TP152JR TP152JR
COMPRESSOR POWER (W) or (HP) 196 or 1/4 196 or 1/4 196 or 1/4
3 – FUNCTIONAL CHARACTERISTICS:
3.1 – Lamp activation system :
The WBM39 and WBM46 models are fitted with 15-watt Lamps, one in the Refrigerator Compartment and
the other in the Freezing Compartment (except for WRM34, WBM35 models). They are activated by means
of two magnets internally, located on the upper portion of the refrigerator door and on the lower portion of
the Freezer door (except for WRM34, WBM35 models), which connect a reed switch existing on the
Interface Board (see drawing below).
Interface Board
Reed Switch
Magnets

MSEX0025_rev01 4
When the door is closed, the magnet is on the Interface Board, which informs the Potency Module causing
the corresponding Lamp to remain OFF. When the door is opened, the magnet stays away from the
Interface Board and the Lamp turns ON. The technician can test the activation system by using a round
magnet with approximately 20 mm in diameter and 5 mm in height (preferably).
The WRM34, WBM35 models are fitted with only one lamp on the Refrigerator Compartment, but their
activation system is the same of the others models
.
3.2 – Product Electronic Control System :
The Refrigerator is fully operated by an Electronic Control System which performs several functions. This
electronic control system consists of the following components:
•Potency Module
•Temperature Sensor
•Interface Board
The following described are the characteristics of each control system component:
•Potency Module :
Fixed in the Cabinet, located beside the Compressor and behind to the metallic cover. The connection from
the Potency Module to the Electric Line and Power Cable is made via connectors with fault-intolerant
fittings.
The replacement of the connectors connecting to the Module is possible through an adapting process,
avoiding the need for changing the Cabinet or Refrigerator. See how to proceed by referring to Item 6.8 -
Adapter for connecting to Potency Module.
•Temperature Sensor :
Responsible for monitoring the air temperature on the
Evaporator input, sending signals to the Potency
Module. It is connected to the Potency Module for
Cabinet internal wiring.
Potency Module