The Whirlpool WRF757SDHZ03 is a 25.6 cubic foot French Door Refrigerator with an external ice and water dispenser. This service manual provides authorized technicians with essential information for installation, diagnostics, repair, and maintenance. It includes safety warnings, technical specifications, component locations, wiring diagrams, disassembly instructions, error code definitions, and troubleshooting procedures. Always disconnect power before servicing.
WARNING: This manual is for qualified service personnel only. Users should not attempt installation or service.
| Hazard | Precaution |
|---|---|
| Electrical Shock | Disconnect power cord before servicing. Verify power is off with a voltmeter. |
| Refrigerant | System contains R-600a (isobutane) refrigerant. Handle with care; follow EPA recovery guidelines. |
| Sharp Edges | Wear cut-resistant gloves when handling evaporator coils, sheet metal, or tubing. |
| Heavy Components | Use proper lifting techniques. Two-person lift recommended for compressor, door, or cabinet. |
| Flammable Material | R-600a is flammable. No smoking or open flames. Ventilate area before brazing. |
Proper installation is critical for performance and safety.
WARNING! Failure to remove shipping bolts will cause excessive vibration and noise.
Key serviceable components and their locations.
| Component | Location | Access Method |
|---|---|---|
| Main Control Board | Top rear, behind grill | Remove top grill screws, lift off. |
| User Interface Board | Right door, front panel | Remove door trim panel (clips). |
| Compressor & Inverter Board | Bottom rear, machine compartment | Remove rear service panel. |
| Evaporator Fan Motor | Freezer section, rear wall | Remove freezer interior rear panel. |
| Condenser Fan Motor | Bottom front, behind kickplate | Remove kickplate. |
| Dispenser Switch Assembly | Right door, behind dispenser pad | Remove dispenser cover screws. |
| Water Inlet Valve | Bottom left rear | Remove lower rear access panel. |
| Defrost Heater & Thermostat | Behind freezer evaporator cover | Remove evaporator cover screws. |
Schematic and wiring information for diagnostics.
Main Harness Connectors: J1 (Power Input), J2 (Compressor/Inverter), J3 (Evaporator Fans/Defrost), J4 (Door Switches/Lighting), J5 (Dispenser/UI).
Voltage Checks: - Line Voltage (J1-1 to J1-2): 115 VAC ±10%. - Control Board DC (Test Point TP1 to GND): 12 VDC. - UI Board DC (Test Point TP3 to GND): 5 VDC.
Grounding: Verify continuity between chassis ground point (green screw near compressor) and outlet ground.
The electronic control system manages all functions.
Main Control Board (Part # WPY312489): Monitors sensors, controls compressor speed, manages defrost cycle, and communicates with UI.
User Interface Features: - Temperature Settings: Fresh Food (34°F to 44°F), Freezer (-5°F to 5°F). - Controls: Filter Reset, Sabbath Mode, Dispenser Lock, Quick Cool/Freeze. - Display Indicators: Door Ajar, Filter Status, Water/ Ice Dispenser Active, Error Codes.
Sensor Locations & Resistances (@ 77°F): - Fresh Food Sensor: 10 kΩ - Freezer Sensor: 10 kΩ - Evaporator Sensor: 10 kΩ - Ambient Sensor: 10 kΩ
Sealed system components and service procedures.
CAUTION! R-600a is flammable. Use nitrogen purge when brazing. Evacuate to 500 microns.
Ice and water dispenser mechanical and electrical components.
| Component | Test/Procedure |
|---|---|
| Water Inlet Valve | Resistance: 200-500 Ω. Apply 120VAC to terminals; should click open. |
| Ice Maker Assembly | Part # WPW10304621. Check for jammed gears, faulty fill cup, or heater. |
| Dispenser Switch Pad | Test micro-switches for continuity when pressed. |
| Auger Motor (Ice) | Disconnect and apply 120VAC; should run smoothly. |
| Water Filter Housing | Check for leaks. Ensure filter is installed correctly and not clogged. |
Water Flow Path: Inlet Valve → Filter → Dispenser Solenoid/ Ice Maker Fill Tube.
Step-by-step removal of key components.
To Remove Doors: 1. Unplug refrigerator. 2. Open door fully. 3. Remove hinge cover (pry gently). 4. Support door, remove hinge bolts with hex driver. 5. Lift door straight up and off.
To Access Evaporator: 1. Remove all freezer interior bins and shelves. 2. Remove screws securing evaporator cover (inside rear freezer wall). 3. Carefully pull cover forward to release clips. 4. Disconnect fan and sensor connectors.
To Replace Main Control Board: 1. Remove top grill (snap-off or screws). 2. Disconnect all wire harnesses (note positions). 3. Remove mounting screws. 4. Reverse steps with new board.
Fault codes displayed on UI or indicated by flashing lights.
| Code/Flash Pattern | Description | Likely Cause |
|---|---|---|
| F1 / F2 E0 | Fresh Food or Freezer Sensor Fault | Open/short circuit in sensor or wiring. |
| F3 E0 | Evaporator Sensor Fault | Failed sensor or poor connection at main board. |
| F5 E0 | Ambient Sensor Fault | Sensor failure. |
| FF / FF E0 | Communication Error | Faulty UI board, main board, or harness. |
| PF | Power Failure | Normal indicator after power outage. |
| d1 / d2 | Door Switch Error | Door left open or switch stuck. |
| Ice Maker Flashing Light | Ice Maker Fault | Jam, motor failure, or fill timeout. |
Clearing Codes: Most codes clear automatically when fault is corrected. Unplug unit for 5 minutes to reset control system.
Structured approach to common symptoms.
| Symptom | First Checks | Next Steps |
|---|---|---|
| Unit not cooling | Power present? Compressor running? Fans running? | Check error codes. Test sensors. Listen for refrigerant flow. |
| Excessive frost in freezer | Door seal integrity? Defrost heater continuity? Defrost thermostat closed? | Check defrost timer/control board output. Inspect drain for clog. |
| No ice production | Water connected/filtered? Ice maker ON? Water inlet valve getting signal? | Test water inlet valve. Check for frozen fill tube. Inspect ice maker mechanism. |
| No water from dispenser | Water supply on? Filter installed/old? Dispenser switch activating? | Listen for inlet valve click. Check for kinked line. Test dispenser switch. |
| Unusual noise | Identify source: fan, compressor, water valve, ice maker? | Inspect fan blades for obstruction. Check compressor mounts. Ensure unit is level. |
| Display blank / unresponsive | Power at outlet? Control board getting 12V? UI ribbon cable secure? | Test main board DC output. Check door wiring harness for pinch/damage. |
Final Verification: After repair, monitor unit for 24 hours. Verify temperatures are within spec (Fresh Food: 37°F, Freezer: 0°F).
Service Support: Whirlpool Technical Assistance: 1-800-253-1301. Parts: www.whirlpoolparts.com.