Thread: HVAC saga

One more thing, depending on what type of heat you have, It might be as simple as adding a simple fan relay or at most a sequencer to take the place of the board........Really kind of a waste of money to replace the board if you are gonna change out system in the near future.

Also did you check the G terminal where the tstat wires terminate to the board..........most likley on your unit the heat controls the fan operation and in cool the tstat controls the fan......... meaning you need to have 24v between common and the G terminal to energize the fan relay in cooling

Originally Posted by midcarolina

One more thing, depending on what type of heat you have, It might be as simple as adding a simple fan relay or at most a sequencer to take the place of the board........Really kind of a waste of money to replace the board if you are gonna change out system in the near future.

Also did you check the G terminal where the tstat wires terminate to the board..........most likley on your unit the heat controls the fan operation and in cool the tstat controls the fan......... meaning you need to have 24v between common and the G terminal to energize the fan relay in cooling

Yep--120 main power, 24 from transformer, no power on the board--it's toast. Tsat and wire are good to go. Outside condenser actually will come on but with no power on the board--nothing inside will work. Board is 80 bucks so not much expense. As far as changing the units--I will more than likely just replace the coil and move on or replace the coil and condenser both (if I can't swallow the price for R22)

But with all that said--best laid plans--lol and with my luck there is no telling

The last I paid for R22 was $360. I filled my unit along with a can of dye to find 9 leaks in the A coil and condenser. It ran for about 15 hours before freezing up again. My son-in-law used some to fill his father's system and it's been sitting here since.
I have a few 14 oz. cans of R12 that I bought before it was out of stock.

Originally Posted by canebreaker

Since my landlord/stepdad wouldn't pay for the repairs on the ac here, since the house will be removed soon. I installed a 12,000 btu unit in the livingroom, a 10,000 btu unit in the bedroom and an 8,000 btu unit in the kitchen. There is a room behind the kitchen so it doesn't get direct heat on the south side of the house. I keep the 2 bedroom doors shut on the east side of the house. So I heat and cool 1 bedroom, livingroom, kitchen, bathroom and hall. During the hot days of summer I will wake to about 65 degrees, but as the day wears on it will be about 75 degrees. There is not insulation in the crawl space. 5" of rock wool insulation in the attic. I haven't been into any walls to see what is there. I'll soon be pulling out the utility heaters for heat.

thought you where using the heater pots to heat the house

I have 5 of them ready to go ought to keep the house at 65 degrees.

Well hopefully all fixed. Put the new board in pushed the safety switch in turned tstat to on and bingo blower turned on, on heat ignitor glowed gas flowed and fired up. Happy happy. I'll button up everything after I eat dinner and turn it on to run a cycle and be good to go.