Summary of Contents for Whirlpool WRT138FZDB SERIES
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R-122 SERVICE MANUAL “MATRIX” 18.2 CU FT TOP MOUNT REFRIGERATOR WRT138FZDB**, WRT138FZDM**, WRT138FZDW** *All Engineering Versions W10881764...
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FORWARD This Whirlpool Service Manual, (Part No. W10881764), provides the In-Home Service Professional with service information 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.
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...
GENERAL INFORMATION Section 1: General Information This section provides general safety, parts, and information for the “18.2 Cubic Foot Top Mount Refrigerator” n Refrigerator Safety n Model & Serial Number Location n Tech Sheet Location 18.2 Cu Ft Top Mount Refrigerator...
GENERAL INFORMATION Refrigerator Safety 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.
GENERAL INFORMATION Model & Serial Number Location The Model & Serial Number tag is located in the Refrigerated Compartment on the left side liner near the top (Figure 1). FIGURE 1: Model & Serial Number location Tech Sheet Location The Tech Sheet is located on the bottom rail of the machine compartment in the rear of the unit (Figure 2). FIGURE 2: Tech Sheet Location 18.2 Cu Ft Top Mount Refrigerator...
THEORY OF OPERATION Section 2: THEORY OF OPERATION This section provides information on Theory of Operation for the “18.2 Cu Ft Top Mount Refrigerator.” n Power Distribution n Refrigeration System n Defrost System n Lighting System n Component Access n Diagnostic & Troubleshooting 18.2 Cu Ft Top Mount Refrigerator...
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THEORY OF OPERATION For Service Technician Use Only DANGER WARNING Electrical Shock Hazard Electrical Shock Hazard Only authorized technicians should perform diagnostic Disconnect power before servicing. voltage measurements. Replace all parts and panels before operating. After performing voltage measurements, disconnect power before servicing.
THEORY OF OPERATION For Service Technician Use Only POWER DISTRIBUTION 5 VDC Supply The refrigerator components operate at 120 VAC and 5 VDC. The CB generates 5 VDC power from the 120 VAC power This section describes how power is supplied to the refrigerator and distributed to the control board(s).
THEORY OF OPERATION For Service Technician Use Only REFRIGERATION SYSTEM OPERATION The refrigeration system compares actual Refrigerator Evaporator Compartment (RC) temperature to the set-point temperature. If the temperature is too warm, the sealed system operates to cool the RC and Freezer Compartment (FC). UV Dye TEMPERATURE SET-POINTS Drier...
THEORY OF OPERATION For Service Technician Use Only Water & Ice System LIGHTING SYSTEM Select models of the refrigerator come equipped with a The Lighting System provides light for the Refrigerator optional Modular Ice Maker and Water Valve. Models with Compartment (RC), and on some models, the Freezer the water valve may also have the Modular Ice Maker added Compartment (FC).
DIAGNOSTICS & COMPONENT ACCESS Diagnostics & Component Access This section provides instruction on Diagostics and Component Access for the “18.2 Cu Ft Top Mount Refrigerator.” n Diagnostics n Component Access 18.2 Cu Ft Top Mount Refrigerator...
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DIAGNOSTICS & COMPONENT ACCESS For Service Technicians Use Only REFRIGERATION SYSTEM DIAGNOSTICS & TROUBLESHOOTING Overview Diagnostics contains Service Tests to troubleshoot and identify the cause of most system problems. Use of the on-board diagnostic routine will increase the speed and accuracy of troubleshooting.
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DIAGNOSTICS & COMPONENT ACCESS For Service Technicians Use Only Component Access 5. Remove the six (6) plastic Hole Plugs from the back of the freezer liner. WARNING 6. Remove the six (6) ¼” screws from the back of the freezer liner.
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DIAGNOSTICS & COMPONENT ACCESS Notes 18.2 Cu Ft Top Mount Refrigerator...
WARRANTY INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-832-7174 HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN...
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18.2 CU FT TOP MOUNT REFRIGERATOR W10881764...