Microwave F-7 Code

It may be a humidity sensor code or a touchpad code. 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. If you have other questions, please feel free to contact me directly (see below).
. - William E. Miller, AS-EET
[email protected]
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Per the tech sheets (page 8), "F2" error code means "Keyboard failure". Recommended by the manufacturer to replace the touch panel first and, if it would not solve the problem, then the control board has to be replaced too. Not the best recommendation but we have to follow it.

- The part number for the touch panel (aka a membrane switch) is AP3130765

- The part number for the control board AP3130764

Here are the break down diagrams for the Kitchen Aid microwave Model KHMS155LSS4

Gene.
__________________
Appliance Repair Expert in Orange County, California.

Order Appliance Parts with 365-Day Hassle Free Return Policy - AppliancePartsPros.com


Read more: http://forum.appliancepartspros.com/microwave-repair/19054-kitchen-aid-microwave-error-code-f2.html#ixzz3bRus7JKM
http://forum.appliancepartspros.com

I assume you have this in a motor home/RV that's where they were used mostly. That error code is not a standard code. If you call Samsung you will be told it has to be serviced by a tech and they don't know what the error code is. In 4 years I've never been able to find a answer to E A1
besides have a service tech look at it, and mostly/always they end up recommending replacement.
If someone else at FIXYA knows different I too would like to know.
Sorry..don't like being the bearer of bad news but I wouldn't want you to throw parts/service at something and end up replacing it anyway.

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. It should cover an F7 error code.

A video is available here showing how to remove a typical over the range control panel assembly in under 5 minutes.

This may help:

F7 Error Code On Microwave Ovens With Inverter Board
MODELS: GH9177XL, GH9185XL, MH9180XL, MH7155XMS, & KHHS178L for example

An F7 error code could be an inverter board failure. Anything else that prevents microwave energy may also cause an F7 error, and must be checked. The technician should perform the following procedure to test for an F7 error code:

1. Check the magnetron.
2. Check the magnetron TCO (it should be closed).
3. Check the 3 interlock switches.
4. Check the harness wiring.
5. Check the electronic controls.
6. Check the inverter board.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

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.

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.

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.

From a similar model's tech sheet (and yours should have one hidden inside):

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. See this file for details.
5. Check wiring to the 1100W inverter and control system. See "Checking Inverters"
6. Check operation of all interlock switches. See this text file. 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.

You can find helpful exploded view diagrams and order parts by entering your full model number (KHHS179LSS2 without dashes or spaces) 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.

F2 is saying the key pad has a problem:
See this tech sheet:
https://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208205612.pdf

The touch/keypad can be found here: (Item 9) BLACK
http://forum.appliancepartspros.com/microwave-repair/19054-kitchen-aid-microwave-error-code-f2.html
I am assuming yours is white but the model number does not cross for some reason to a white control panel. When I cross it to your model it comes up Biscuit color ITEM 3 here:
($122.18)
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5133020&diagram_id=948095#d948095

I would check to make sure that no keys are stuck by rubbing your 1st finger FLAT across the membranes to unstick them and then check inside the unit to make sure the flexible ribbon connector is properly mated to the control board. Inside the unti there is usually a tech sheet inside the cabinet stored in a 4 X 6 envelope that may give you some insight on the keypad error. It should be Item 1 here as far as location only:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5133020&diagram_id=948095#d948095

Thanks for choosing FixYa.

Kelly

This is a known problem with this unit, and whirlpool has put out a Service Flash out on this. The reason this is happening is Electrical circuit interruption between the L1 and Neutral in the microwave invert circuit. This has to be addressed by a Tech.

DrakeTech

if this is a counter top you should be able to remove the cover by removing the screws on the back, be aware that a lot of manufacturers use safety bits. about $24. once removed the tech sheet on top should have the codes and solutions

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