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Whirlpool Velos Microwave showing "Error F7 HV SMPS Feedback" error. What does that mean?

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F7 means that the control panel is not getting feedback from the Switched Mode Power Supply (high-voltage inverter).

This could be due to a problem with the inverter or the control unit / circuit board, but it appears to be the latter in most cases.

We repair microwave control boards for customers nationwide with our guaranteed $39.95 service.

We have full details, plus critical safety, disassembly, and troubleshooting info at our site. You'll find a link to our site in our listing here on FixYa: http://tinyurl.com/yzjozk

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful.

You may reply back with your brand and model number if you'd like us to look into this further, or feel free to contact me directly if you need more help.

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jun 29, 2008

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1 Answer

Code f 7


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.

Oct 15, 2013 | Whirlpool Microwave Ovens

1 Answer

F7 error on Velos microwave


The controller is not getting the correct feedback signal from the SMPS (switched-mode power supply AKA inverter).

It may be a problem with the inverter, magnetron, magnetron thermostat, controller, or thew wiring that connects them.

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.



You can see a YouTube video
here that shows you how to remove the
controller assembly from a typical over the range microwave in less than 5
minutes.



You can find see the parts list with helpful exploded
views and download manuals for it here:



http://shared.whirlpoolcorp.com/product_literature/search_results.jsp?searchTerm=XXX&siteCd=WHRCOM&userType=Consumer



NOTE: You must change the XXX in the URL above to your
exact model number with suffix (but no dashes) as shown on the tag in the
cooking cavity or on of the oven. Then copy & paste it into your browser\'s address box.




You can buy part from
the Pros here
, our favorite supplier.


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

Feb 10, 2013 | Microwave Ovens

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

1 Answer

F7 call for service


Hi, the F7 = HV SMPS feedback error. Most of the time this is a costly microprocessor board issue but can be something as simple as a loose or broken wire.

If it is in fact new you should contact Whirlpool for warranty service. Anything you would do as a consumer will void the warranty.

Apr 02, 2011 | Whirlpool GMH5205XVB Microwave Oven

1 Answer

Error code F7


Hi drk2676,

This error code F7 means that you have a function key stuck on ERC. You can solve this issue by replacing control board (also called ERC or clock). You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central.

Hope this helps.

Thank you for using FixYa.

Feb 01, 2011 | Whirlpool GH6177XPS Microwave Oven

1 Answer

KitchenAid KHMS 2050 SSS, doesn't heat up and indicates "Error Code F7, VH SMPS feedback, call for service"


Hi asoleyma,
This error code F7 from a Ktchenaid oven means that the function key is stuck on ERC. This can be fixed by having the control board (also called ERC or clock) be replaced.You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central. Just get your model number ready when you call.
Hope this helps.
Thank you for using FixYa.

Jan 30, 2011 | KitchenAid KHMS155LSS 1000 Watts Microwave...

1 Answer

My new Whirlpool Microwave oven is now showing an F7 on the screen and will only turn on for 3 seconds. What should I do?


Hi and welcome to FixYa, I am Kelly.

The F7 = HV SMPS feedback error. Most of the time this is a costly microprocessor board issue but can be something as simple as a loose or broken wire.

If it is in fact new you should contact Whirlpool for warranty service. Anything you would do as a consumer will void the warranty. First make sure your microwave is registerd via this link where it says "Register your product" http://www.whirlpool.com/custserv/index.jsp

Then using that same link you can schedule service or find out where your nearest carry in service center is.
Online Service Scheduling:
https://www.whirlpool.com/service/error.jsp?country=US&lang=en&brand=WP

CONTACT WHIRLPOOL
(866) 698-2538
Mon-Fri: 8am - 10pm (EDT)
Sat: 12pm - 5pm (EDT)

email: http://www.whirlpool.com/custserv/email_form.jsp


If the unit is second hand or out of warranty please include the model number in your next response.

Thanks for choosing FixYa,

Kelly

Dec 21, 2010 | Whirlpool Microwave Ovens

1 Answer

F7 ERROR CODE ON GH6177XPS


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

Dec 24, 2009 | Whirlpool GH6177XPS Microwave Oven

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