After a few power outages and some very cold weather, the Goodman (GMSS960803BNAA) propane furnace at our cabin is not heating.
The thermostat is new/replaced (Nest) and I've checked voltages for the thermostat wires.
When turned on, the furnace attempts to light (see video) but for whatever reason does not end up lighting.
After three attempts, the solid red status light turns to a single blink (system lockout). No other blink statuses during ignition.
Other propane appliances in the house (stove, water heater) seem to be working fine.
I am not familiar with furnaces so any specific suggestions appreciated. I'd call an expert in to help but the cabin is not easily accessible in the winter.
Best Answer
The two leads going into the gas valve should read 24 volts for about half a second just before it shuts off again if that's the case then your gas valve is no good. If you don't get 24 volts for half a second or so just before the igniter shuts off then the problem is Upstream. Possibly a pressure sensing device attached to the gas pipe doesn't allow the gas valve to open if the propane pressure is too low I don't think Goodman and uses that set up for propane conversions) you may have an issue with your circuit board. Often grounding will be the first thing people jump to, but in most cases a grounding issue causes trouble with sensing the flame. What would happen is the flame would light and then go out that's not the case here.