Whirlpool MH6140XK Microwave Oven Logo
Posted on Oct 18, 2008
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WHIRLPOOL MICROWAVE GIVING F-7 CODE

WHIRLPOOL MODEL GH5184XPB4, UNIT RUNS FOR ABOUT 4 SECONDS, THEN SHUTS OFF AND GIVE F-7 CODE. (POWER TO MAGNETRON INTERRUPTED) FAN, TURNTABLE AND ALL LIGHTS WORK. TOUCH PANEL MICROCOMPUTER BOARD TEST CHECKS OK. HOW DO I GET TO THE MAGNETRON AND INVERTER ON THIS UNIT TO TEST THOSE COMPONENTS?

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  • 1 more comment 
  • SMITH299516 Oct 18, 2008

    I would like to test the magnetron and inverter to determine witch componet is bad. How do I get access to those items? I have removed the front panel and see the fan and fan housing just not sure how to remove those items to get behind them to the inverter.

  • SMITH299516 Oct 18, 2008

    how do you get to those componets to test them.

  • Anonymous Mar 21, 2014

    How should I check the unit to be sure it is the failed component?

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Anthony Stewart

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It appears to be from detecting an arc due to insulation fault such as a punctured sleeve or too close to a conductor with dust and humidity.

This may be difficult or easy depending on your hands on skills. With power unplugged at all times, the big cap inside will self-discharge. Then follow this Youtube link for easy stripdown , but the user could not fix it. However E&M in text did fix his and others. https://www.youtube.com/watch?v=rXRykNj2Lh0

youtube.com

Possible source of Microwave F7 error code Whirlpool GE

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  • Posted on Oct 18, 2008
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If u want to test the magnetron u will have to open up ur oven
if u want to take the risk
i really dont know whether these steps will work but u can try the steps give..
http://www.gallawa.com/microtech/mag_test.html



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  • Whirlpool Master 19,396 Answers
  • Posted on Oct 18, 2008
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To start , here is a general diagram for microwave, so that you can locate parts, just move the mouse on top of the picture.

Before performing any operation discharge high voltage capacitors, . see Procedure.


To test the magnetron you test its resistance, when it is 0 Ohms , then it is faulty.

See here on how to proceed :

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.
FromWhirlpool Microwave

See also How To Test The Magnetron Used In Microwave Ovens

The inverter is more difficult to test , as you need scpecific knowledge to test an electronic board.

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  • Master 1,952 Answers
  • Posted on Oct 18, 2008
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Micro computer board failiar change the micro computer board

Check that nothing is blocking air intake openings on oven back or that oven exterior is very hot. Correct as needed. Wait a few minutes and try again. If problem persists, call for service.

  • 2 more comments 
  • Anonymous Oct 18, 2008

    While pressing the CANCEL keypad:

    Open the oven door.

    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


    \ 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 "�" is
    displayed...

  • Anonymous Oct 18, 2008

    This most commonly is a
    bad door switch, other possible problems are a faulty relay
    or solder joint on the power module, but a bad door switch is most common.

  • Anonymous Oct 18, 2008


        Unplug the oven (make sure the oven is completely disconnected from any power source)

        DISCHARGE

        ALL HIGH VOLTAGE CAPACITORS        . (Procedure)


        Carefully remove all leads from

        the magnetron terminals. Proper wiring is important so make notes of the wire

        locations.

        Set the ohmmeter to its lowest resistance

        scale.

        Measure the resistance from one

        magnetron terminal to the other in either direction.

        The magnetron filament resistance

        should be less than one ohm.









  • Anonymous Oct 18, 2008

    click the below link
    http://www.partselect.com/repair.aspx?ap...test-mag...



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  • Posted on Oct 18, 2008
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Hello sir 

you are right magnetron is fully interrupted....... but tell me  !. do you want to repair machine( 4 sec problem) 2. do you want to buy inverter , magnetron  please tell i am ready to help you sir


I believe that is a microcomputer board failure. You will have to replace this board. Website below.

I have gotten parts from "repairclinic" on line and they worked fine. I saved $600 on the last repair of an oven. Good luck.



or sir you can find and fix each and every type of code error


http://www.applianceaid.com/micro_faultcodes.html#WLP

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My immediate reaction would be to cut your losses and buy a new unit as sooner or later you will run into a part that is no longer available.
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Nov 03, 2012 • Whirlpool Microwave Ovens
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Gh6177xps
Your full model number would be either GH6177XPS1, GH6177XPS2, GH6177XPS3, or GH6177XPS4 as found on the model tag. I mention that only if you need to order parts.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

mini_manual_behind_grille_small.jpgdee77f7.jpgAt our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

On the tech sheet for our model, trouble code F7 is discussed:

F7 Power to magnetron interrupted

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 resistance of the magnetron thermostat.
6. Check the magnetron.
7. Check P2, P4 and P27 connections.
8. Check wiring to the 1100W inverters and control system. See "Checking Inverters."
9. Check operation of all interlock switches.
10. Replace inverter, if defective.
11. Replace all parts and panels before operating.
12. Plug in microwave oven or reconnect power.
13. If problem persists, unplug microwave oven or disconnect power.
14. Replace electronic control.
15. Replace all parts and panels before operating.
16. Plug in microwave oven or reconnect power.
17. If problem persists, unplug microwave oven or disconnect power.
18. Check for reversed plug connection on controls or loose wiring.
19. Replace all parts and panels before operating.
20. Plug in microwave oven or reconnect power.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Read full answer
Sep 07, 2012 • Whirlpool Microwave Ovens
3helpful
1answer

What is the F7 code mean?
According to the technical sheet found hidden inside the unit behind the controller and online here:

F7 Power to magnetron interrupted
1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem. (Possible reason: Over temperature protection for the magnetron opened.)
3. Check resistance of the magnetron thermostat. It should be close to 0 ohms.
4. Check the magnetron.
5. Check wiring to the 1100W inverter and control system.
6. Check operation of all interlock switches.
7. If switches operate correctly:
- Replace 1100W inverter.
- If problem persists, replace power supply board.
8. Plug in microwave oven or reconnect power.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Read full answer
Sep 08, 2010 • Whirlpool Accuwave Microwave Oven
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1answer

Whirlpool microwave shows f-7
From the technical sheet hidden behind your control panel and online here:

F7 Power to magnetron interrupted
1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Check resistance of the magnetron thermostat.
4. Check the magnetron.
5. Check wiring to the 1100W inverter and control system. See “Checking
Inverters.”
6. Check operation of all interlock switches. Check door, hinge and cavity front alignment. Adjust as needed.
7. If switches operate correctly, replace 1100W inverter.
8. If problem persists, replace electronic control.
9. Plug in microwave oven or reconnect power.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Read full answer
Sep 07, 2010 • Whirlpool GH6177XP Microwave Oven
7helpful
1answer

Microwave shuts down after 3 seconds
you need a new magnetron and inverter board, this is an expensive repair, unit can be replaced with panasonic parts or replaced with same size panasonic unit
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Jul 17, 2009 • Thermador MBBS Microwave Oven
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Microwave does not heat.
HI, this is an inverter board issue. the magnetron would not shut down the unit. if the magnetron was the issue, it would continue to run but, it would not heat.

replace the inverter asap.
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Jun 17, 2009 • Panasonic Microwave Ovens
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1answer

F7 Error
This is schematic:
http://www.servicematters.com/docs/wiring/wiring_main.htm
But your correct model # is: GH5184XPS4

F7 Power to magnetron
interrupted
1. Check the door, hinge and cavity front alignment. Adjust as needed.
2. Check the operation of all interlock switches.
3. To check the over-temperature protection for the magnetron, unplug
microwave oven or disconnect power.
4. After 40 seconds, check to see whether this solves the problem.
5. If this solves the problem, check the cooling fan for proper operation or
blockage.
6. Unplug microwave oven or disconnect power.
7. Check resistance of the magnetron thermostat. It should be close to
0 ohms. If necessary, replace magnetron thermostat.
8. Check that the control cable to the 1100 watt inverter is correctly connected
to plug P2 on the display PCB. If necessary, adjust or reconnect.
9. If interlock switches operate correctly, replace 1100W inverter.
10. If problem persists, replace electronic control.
11. Plug in microwave oven or reconnect power.

I’m happy to help further over the phone at https://www.6ya.com/expert/vitaliy_f406165329c75ede

Read full answer
Dec 06, 2008 • Whirlpool GH5184XPQ Microwave Oven
1helpful
1answer

Whirlpool microwave oven
There should also be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

It says:

F7 Power to magnetron interrupted

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.

If for some reason your tech sheet is not there, you can download it here.

We regularly repair control units for customers nationwide by mail for $39.95 postpaid in about a week with a one-year guarantee.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
[email protected]
http://www.microwavedisplay.com

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Nov 30, 2008 • Whirlpool GH4155XP Microwave Oven
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Model 72180883400
Hi,
F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.
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Sep 01, 2008 • Kenmore 62702 Microwave Oven
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Microwave F-7 Code
F7 is q Power to magnetron
interrupted

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 resistance of the magnetron thermostat.
6. Check the magnetron.
7. Check P2, P4 and P27 connections.
8. Check wiring to the 1100W inverters and control system. See
“Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace inverter, if defective.
11. Replace all parts and panels before operating.
12. Plug in microwave oven or reconnect power.
13. If problem persists, unplug microwave oven or disconnect power.
14. Replace electronic control.
15. Replace all parts and panels before operating.
16. Plug in microwave oven or reconnect power.
17. If problem persists, unplug microwave oven or disconnect power.
18. Check for reversed plug connection on controls or loose wiring.
19. Replace all parts and panels before operating.
20. Plug in microwave oven or reconnect power.
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