Search results

25 year old home, owned it for 10 years now. Yesterday one bathroom outlet stopped working (not a GFCI outlet). What I know so far: Looked at breaker box, was not tripped. Opened the outlet up and found both hot and neutral wires had melted sheathing (there was no evidence of...

I actually stumbled across the fix. When schematic was reading 24V, I was measuring in DC, not AC. Doh. the flow chart led me to replace the xformer but I dont think it was the 24v side, I think the 120V side wasn't completely operational.

It was the transformer. As soon as it was replaced, turned the system on, the HSI got red hot and gas flowed.

With no other place to go I found a few pretty cool tools for the control board: 1. troubleshooting manual: https://www.manualslib.com/manual/556709/White-Rodgers-50a55.html?page=3#manual 2. Schematic for control board...

Checked voltage coming off the control board to HSI - nothing there. (with induction fan ON) Also checked primary limit and aux limit switched - both are closed (indicated normally closed on schematic). When I was checking voltage on the control board a few of the relays were turning on/off...

Agreed. Part of what I do not know is order of operation of a furnace. No Idea. If anyone can provide this, would be a great help! Part of my initial problem was the multi-meter I have was suspect, so some of the first troubleshooting was not accurate. This is what I know/done: 1...

I assume the HSI should come on after the induction fan comes on: Yes after looking at the schematic in the manual, the HSI is on the high voltage (120v) circuit. I need to look at this a little closer. Should be able to check this voltage today - got a multimeter that works.

Sorry yeah that is what i meant - voltage to the igniter. I checked this and I now think the power supply is suspect. got 120 VAC going to the PS, but nothing coming out of the 24 V.

Sorry - yeah replaced all filters. Didnt climb on the roof (not a ladder guy). However given the information that when induction fan comes on, the pressure switch closes, I think it is safe to assume there is no blockage on top of the roof.

HSI is the igniter? Should I unplug the igniter and measure voltage across those two leads?

anyone know the order of operation? Should burner kick in next, then main blower turn on? I am thinking main control board...

Nope does not fire. The induction fan turns on, vacuum switch closes, but nothing after that. Vacuum switch seems to operate properly but the thing does not fire up.

I also tested the ignition element - giving me 50 ohms - so i am assuming this is OK?

I would bet insulation is incomplete somewhere. I have a 2-story 2300sq ft home, with a furnace for each floor. The master bedroom is terrible; it has a 15 or 18 ft vaulted ceiling. Seems insulation is complete in the attic - I need to get a thermography scanner from work to scan the exterior...

New to the forum. Live in NC, transplanted from PA 20 years now. I do most everything - car repairs, home repairs (tile/wood flooring, plumbing, small electrical,drywall, painting). Most anything given opportunity and time.

Got an Amana/Goodman natural gas furnace. Model CHPF1824A6AA, about 12 years old. Has worked great until late last week. LED lights blink 3 times, indicating an induction air problem. I checked the vacuum switch - infinite resistance when induction fan is off. When induction fan turns on...