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groundhogy's avatar
groundhogy
Explorer
Mar 06, 2022

Dometic/Atwood Furnace AFMD30... grrr cntl board

So as we discussed in another thread, i pulled the stove out and went to work cleaning lint out that may have been blocking air flow. I had complained of the flame cutting off/on during cycle. I cl...
enblethen's avatar
enblethen
Nomad
Mar 06, 2022
There is a small transformer on the circuit board that bumps the voltage way up to create the spark to ignite the propane.
Things like circuit board or gas valve can be bad that would affect the voltage readings.
Unplug the connector and check readings. Problem goes away, plug it back in. Disconnect the gas valve coil. Test again.
Manual
The power goes through the thermostat before getting to the furnace.

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