- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
F3H Humidity sensor failure 1. Unplug microwave oven or disconnect power.
2. Connect a new sensor to the board (at P5).
3. Plug in microwave oven or reconnect power.
4. If no failure code appears when starting sensor function:
Unplug microwave oven or disconnect power.
Replace old sensor.
5. If failure code appears when starting sensor function:
Unplug microwave oven or disconnect power.
Replace power supply board.
6. Plug in microwave oven or reconnect power.
F3H means you have a failing humidity sensor, but the
first thing I would suggest is a hard reset. Unplug the unit for a
minute or so. Then plug it back in, set the clock and try again.
If that doesn't work,
leave it unplugged for about 5 minutes. Then let us know if the hard
reset does not fix it.
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.
If you don't find yours, or if you want to look at it without disassembling the oven, you can usually download it here.
You can usually 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.
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.
×