Whirlpool WMH31017HS Microwave Problems & Error Codes — Overview
The Whirlpool WMH31017HS is a 1.7 cubic foot over-the-range microwave sharing the same platform and control architecture as other Whirlpool OTR models. The most frequent complaint on this series is keypad failure, usually triggering an F2 error code and locking out normal operation. Control board relay faults and sensor errors also appear regularly as the unit ages. Many of these faults will clear temporarily after a hard power reset, but if the code returns within a few cook cycles the underlying part has failed and needs replacement.
Most Common Problems on This Model
- F2 error code and unresponsive touchpad The membrane keypad or ribbon cable has failed, or the main control board is no longer reading key presses correctly, so replace the touchpad assembly first and the control board if the fault persists.
- F3H error code The humidity sensor has failed or its circuit is open, so test the sensor per the tech sheet and replace it if out of spec.
- F6 error code The microwave relay on the main control board has failed, so replace the control board.
- F7 error code The microcomputer on the main control board has failed, so replace the control board.
- Microwave runs but display is dark or flickering The control board display driver or ribbon connection has failed, so reseat the ribbon cable and replace the board if the fault continues.
- Unit powers on but will not heat The magnetron, high-voltage diode, or door interlock switch has failed, so test each in sequence and replace the failed component.
- Error codes appear after power outage or surge The control board has latched a spurious fault, so unplug the unit for 2 minutes to clear the code, and if it returns replace the control board.
- Turntable or vent fan will not run The turntable motor or vent fan motor has failed or the control board output is bad, so test motor continuity and replace the motor or board as needed.
Parts That Commonly Fail
| Part | Notes |
|---|---|
| Touchpad / membrane keypad | Amazon | Fails on F2 errors; check ribbon cable connection first. |
| Main control board | Amazon | Fails for F6, F7, persistent F2, and relay/output faults. |
| Humidity sensor | Amazon | Triggers F3H when open or out of range. |
| Magnetron | Amazon | Fails on no-heat complaints; test with meter and high-voltage safety precautions. |
Microwave Error Codes for This Model
These codes apply to this model line:
- Whirlpool Microwave E03 error code
- Whirlpool Microwave E11 error code
- Whirlpool Microwave E12 error code
- Whirlpool Microwave E13 error code
- Whirlpool Microwave E21 error code
- Whirlpool Microwave E22 error code
- Whirlpool Microwave E23 error code
- Whirlpool Microwave E24 error code
- Whirlpool Microwave E61 error code
- Whirlpool Microwave E62 error code
- Whirlpool Microwave E63 error code
- Whirlpool Microwave F01 error code
When to Call a Pro
Call a tech for any fault that persists after a full power reset and touchpad replacement, or any time you need to test or replace high-voltage components such as the magnetron, high-voltage capacitor, or diode. The capacitor holds a lethal charge even when unplugged. If you see arcing inside the cavity, hear loud buzzing during cook, or smell burning from the control area, shut the unit down and call for service. Control board replacement on this model requires removing the entire wrapper and working around line-voltage and microwave-generating circuits, so unless you are comfortable with that level of disassembly and have proper discharge tools, leave it to a qualified appliance technician.