F3 usually means a sensor failure, and the H could mean the humidity sensor is the culprit.
There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel. It's very helpful when troubleshooting.
Basic disassembly on this is as follows:
1. Unplug it from the outlet.
2. Remove any screws and unlatch any tabs in the vent grille.
3. Pull up and/or out to remove the grille.
4. Remove the screw now revealed at the top of the control panel assembly.
5. Lift up and/or swing down the control panel assembly.
6. Retrieve the aforementioned mini-manual.
7. Use the mini-manual to check the sensors.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: Appliance Parts From PartSelect | Repair Parts For Major Appliances.
Last edited by PS Staff - Sheila : 02-20-2008 at 11:42 AM.
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Fan not running 
