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Whyrpool microwave stops working and F7 is displayed on the screen

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Try unplugging the unit for 1 minutes to reset. If problem still exists, it's likely the door interlock switch. You can find them here, be sure to have someone experienced install...it's relatively easy to do.

http://www.electronix.com/microwave-repair-switchescouplers-c-557_564.html

Posted on May 25, 2011

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Posted on Jan 02, 2017

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1 Answer

How CAN i TEST MY MICROWAVE?


Most common cause of an F7 code on these models is a bad inverter or magnetron. Generally it is best to replace both the magnetron and the 1100 watt inverter board at the same time, since a bad magnetron is usually what burns out the inverter board.

Jul 24, 2014 | Whirlpool Gold GH5184XPS 1.8 Cu. Ft. Over...

2 Answers

Whirlpool GH5184XPS Microwave Oven F7 error, trips circuit breaker


Check the high voltage capacitor, it normally shorts, "discharge with screwdriver" unhook one side and set meter to ohms. Check high voltage diode tied into one side of the capacitor, "unhook from chassis ground" set meter to ohms and check for short, sometimes cracks, "must be replaced" If the diode is open meter does not have enough forward bias to check.

Apr 01, 2012 | Whirlpool Microwave Ovens

2 Answers

I have a whirlpool microwave oven over the range. Model GH 5184xps-4 when I press start, it comes on for one second then it shows a code -F7- and stops


TOUCH PANEL & MICROCOMPUTER BOARD TEST FOR WHIRLPOOL....

The microwave oven may be provided with a self diagnostic routine that can be operated

through the touch pad keyboard. To enter the self-diagnostic routine:

1.While pressing the CANCEL keypad:
a) Open the oven door.
b) Unplug the microwave oven for 2-seconds and plug it back in.
c) Release the CANCEL keypad and close the oven door. You will see the following display.

CHART
NOTE: The humidity sensor test results will appear on the display after 8-seconds.If the tests are successful, "OK " will be displayed. If one or more of the tests fail, "ERR " will be displayed.. 2.When a keypad is pressed, a number according to the test chart will be displayed. When no keypad is pressed, a blank "O" (square) is displayed...

POWER FAILURE & FAILURE CODES
Power Failure: After a power failure, the WELCOME screen will be displayed.

F2 Keyboard Failure: Refer to the Tech Sheet and conduct a touch panel continuity test.

F3 Humidity Sensor Failure: Refer to the Tech Sheet and test the sensor.

F6 Microwave Relay Failure: Check the microwave relay.

F7 Microcomputer Board Failure: Change the microcomputer board.


Hope helps.

Apr 12, 2011 | Whirlpool Microwave Ovens

1 Answer

F7 code on Whirlpool Microwave model GH9185XLT - 1


Power to magnetron
interrupted
12. Replace inverter.
13. Replace all parts and panels before operating.
14. Plug in microwave oven or reconnect power.
15. If problem persists, unplug microwave oven or disconnect power.
16. Replace electronic control.
17. Replace all parts and panels before operating.
18. Plug in microwave oven or reconnect power.
19. If problem persists, unplug microwave oven or disconnect power.
20. Check for reversed plug connection on controls or loose wiring.
21. Replace all parts and panels before operating.
22. Plug in microwave oven or reconnect power.

May 23, 2017 | Whirlpool GH9185XL Microwave Oven

1 Answer

I turned my micowave on it ran for about 5 seconds then stop and showed a display error of f7


Hello :


Microcomputer board failure . You need to change the microcomputer board.

good luck .

please rate !

Mar 30, 2010 | Microwave Ovens

1 Answer

Error F7


Microwave will not operate (cook). F7 error code
appears on the display.
Electrical circuit interruption between L1 and Neutral in
the microwave inverter circuit.
Possible reasons:
1. Check door, hinge and cavity front alignment and adjust
as needed.
2. Check the operation of all interlock switches.
3. Check over temperature protector for the magnatron.
4. Check all Cavity Thermostats for closed circuit.
5. Unplug the oven for at least 40 seconds. If this solves
the problem
A. Check the Cooling Fan for proper operation or
blockage
B. Check the resistance of the magnetron thermostat.
It should be 0 Ohms, replace if necessary.
6. Check that the control cable to the 1100 watt inverter
is properly connected to plug P2 on the display PCB
& Adjust or Reconnect
7. If interlock switches operate correctly, replace 1100W
inverter.
8. If problem persists, replace control assembly.

Nov 18, 2009 | Whirlpool GH9176XMS 1100 Watts Microwave...

1 Answer

Works for approx 30 secs then it cuts off with a error Code F7 message.


Assuming yours is a model KHMS2050SSS0, here is what the technical sheet says about the F7 error code:

1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Unplug microwave oven or disconnect power.
4. Check cooling fan operation
5. Check the magnetron.
6. Check P65 connection on the relay control board.
7. Check the P56/P66 connection between relay board and relay control board.
8. Check wiring to the 1200W inverter and control system. See “Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace all parts and panels before operating.
11. Plug in microwave oven or reconnect power.
12. Check voltage at 4903-1 on relay board. If it is 120, unplug microwave oven or disconnect power.
13. Replace inverter.
14. Replace all parts and panels before operating.
15. Plug in microwave oven or reconnect power.
16. If problem persists, unplug microwave oven or disconnect power.
17. Replace relay control board.
18. Replace all parts and panels before operating.
19. Plug in microwave oven or reconnect power.
20. If problem persists, unplug microwave oven or disconnect power.
21. Check for reversed plug connection on controls or loose wiring.
22. Replace all parts and panels before operating.
23. Plug in microwave oven or reconnect power.

(This troubleshooting guide presumes one does not know how to test electronic components. That's why they say to replace and part and check it again.)

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If yours is a different model number, please reply back.

May 26, 2009 | KitchenAid KHMS2050SSS Microwave Oven

2 Answers

Microwave troubleshooting


I found the fix to the F3H error on another site. Just turn the power to the microwave off for ~2 minutes at the circuit breaker, and then turn it back on. Microwave will start working again then.

Feb 23, 2008 | Whirlpool GH5184XPQ Microwave Oven

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