Thread: kenmore ultrawave microwave hood

i followed the tests for the micro/hood on appliancerepair.com. did the cancel/door open/unplug/plug in / uncancel/ close door . it said 8 on the display. tried all the buttons. the auto reheat displayed Hm 460. all other buttons pushed displayed 8 . but now all is working properly (?!?!) . did i reset something by doing those tests ? electrons !?!?

Hi,

I found...

-F3H-

Humidity Sensor Failure
Connect a new sensor to the board (at P5). If no failure code appears when starting sensor function, replace old sensor. Otherwise, replace control system assembly.

jeff.

thanks jeff,

its working now so i'll keep my eye on it and move to that next step if it fails again.

thanks,

scott

My 3 year old Kenmore Elite Microwave Hood Combo failed with an F7 code. No help at Sears, & couldn't find anything about the code on this forum. Called service. Service Tech opened the vent covering the charcoal filter and retrieved a small envelope which had the Error codes:
My code F7 indicated the 1100 watt inverter failure. Cost: $375. The cost to learn this was $55 for the service call. Newspaper ads listed the microwave on sale at less that the inverter cost. I did get a coupon for $65 to buy a replacement at Sears. Naturally we had picked a Bisque color for all kitchen appliances 3 years ago. Looking for a replacement it appears Bisque is going the way of Avacodo and Almond.

For info of others, my "hidden" Tech Sheet Failure Codes reads:

Flashing Colon ":" Power Failure
F2 Keyboard Failure
F3H Humidity Sensor Failure
F3T Temperature Sensor Failure
F7 1100W Inverter Failure

The "For Service Technicians Use Only" 12 page Tech Sheet also indicates there is a 40W Inverter but doesn't have a failure code for it.

Since my 3 year old Kenmore Fridge icemaker is leaking, and my 3 year old Kenmore Dryer is squeaking I voted with my wallet and replaced the Elite Microwave with a GE model.

G'day,

Do you have a model# for the Kenmore microwave?

Thankx for the heads up on the codes!

jeff.

Jeff,

I'm having the same F7 code as FourtyTwo stated above. I found the tech sheet which says the same thing (1100W Inverter).

It lists 5 steps for the repair. The 4th one is replace the 1100W Inverter and #5 is replace Control System Assembly. My question is this...Is there any way to determine if it's either the Control Board OR the 1100W Inverter prior to purchasing one or the other?

I don't want to spend $130 for the 1100W Invetrer only to find it's still doing the same thing and then I'll have to spend more $$$ to replace the Control System Assembly.

Thanks,
Cliff

Howdy,

What's the model#. Kenmore is made by several different companies.

jeff.

It's a Kenmore Elite Ultra Wave Micro Hood Combo, model 665.61689101. It's almost 4 years old.

Cliff

Originally Posted by twincam

It's a Kenmore Elite Ultra Wave Micro Hood Combo, model 665.61689101. It's almost 4 years old.

Cliff

I found....

Flashing
colon “:”
Power Failure
After a power failure, the colon “:” will be flashing. Press any key to end this indication. The colon will then be steady when in standby.

-F2-

Keyboard Failure Replace membrane switch. If problem persists, replace control system assembly.

-F3H-

Humidity Sensor
Failure
Connect a new sensor to the board (at P5). If no failure code appears when starting sensor function, replace old sensor. Otherwise, replace control system assembly.

-F3T-

Temperature
Sensor Failure
1. Check that the oven temperature is not below 5°C (41°F) or above 60°C (140°F).
2. If problem persists, replace the control system assembly.

-F7-

1100W Inverter
Failure
1. Unplug the oven for at least 40 seconds. Check to see if this solves the problem. (Possible reason: Over temperature protection for the magnetron operated earlier.)
2. Check the resistance of the magnetron thermostat. It should be close to 0 ohms.
3. Check wiring to the 1100W inverter and control system.
4. Replace 1100W inverter.
5. If problem persists, replace control system assembly.

Measure Oven Input Current

Connect an ammeter to measure the input
current of microwave oven when the power
level is set to Level 10 at the touch panel:
■ If more than 0.5A, the 1100W inverter
is probably OK. Check the magnetron
using test on page 9, and wiring.
■ If less than 0.5A, there is no input to the 1100W inverter.
Check for the following:

–

No AC voltage supply. Check Control System Assembly PCB and wiring.

–

No control signal. Check Control System Assembly PCB and wiring.

Checking the 1100W Inverter

NOTE: Do not try to repair the
inverter board, nor try to make
any adjustments to the board.
Check wiring to 1100W
inverter:

1. Unplug the oven’s main
power supply.
2. Visually inspect 4 connectors
on the 1100W inverter board:
CN701, CN702, CN703, E701
to see whether there are any
signs of failure due to loose
wires, bad crimping, signs of
overheating, etc.

Hope it helps

jeff.