HVAC Questions? Ask an HVAC Expert for Answers ASAP
I got it from above URL. it is my model.
I tried the thermostat to control temperature to get heat, it failed. I tried open the furnace rack and didn't see fire when blower was running.
I remember it caused by our area power failure a few days ago. When power supply was restored, I found my furnace blower run and stop repeatly. I switched the power off, and turned on after one day. it started the issue I presented. The doc said it looks like a limit control issue which is on the intergral control board. I am not sure if I should it is right.
Thanks you anwser, I am going to down to look at the limit switch.
Found it. I tried to connect two wires together. it still no stop for blower runing. There is no fire and heat also.
I will check the fuse when I back home. Let me know where I can get board and estimated cost. Thanks
Where is the fuse on board? How can I check it out? Do you think it is normal there is no flame in furnace? Or it is only trigged when it needs heating to work.
Get me serial number and I can give you year made. Russ
Ok. I will contact local guys. Thanks your great help!
They came to look into. and sure the board is fail. But the replacement cost is very high. Let me know how to get a new board online. Thanks
www.americanhvacparts.com Part number C1B22408A Check your board and this one to make sure. They have a toll free number to call on site. Russ
I input the Part number and get no matching products were found.
It looks not matching my part number I checked out on my furnace. See below
The closed matching one online is G961DAJ-2402. Can I use that ? Thanks!
Check out number I gave this morning. It is cross for your furnace can not go by part number unless going direct to Rheem. Russ
Under your number, I couldn't find my Model RCBA-4882GG21. But any part numbers do not include this model.
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Great! CIB622408A is matching UGRA-07EMAS. Is it ok as mine is UGRA-07EYBGS? What have to be tuned on this new board if there is difference? Thanks alot!
I called HVACparts.com. She checked my furnace model and serial number. gave me a model below.
Code: CIB6224140. And confirmed this is matching my furnace. There is no return policy. But there is 90 days warannty. Just confirm with you if I should process the purchase. Thanks
Yes . Just make sure you mark wires and turn off power before installing new board. Are you saving any money by doing this yourself. Russ
I got the new board. Not sure if following patching will be matchimg from old to new:
24 VAC line -> SEC
24 COM line ->COM
Line Neutral three lines -> same three lines. But no specific indication for each line naming. If I do lines switched among them, is it bad thing will happen
Between HUM and EAC indication there are two lines patched -> only two lines with indication L1 upper and XFMR-PRI downside.
F, H, C three lines -> Fan, Heat, Cool three line
M2 -> M2
On old board, there is a line terminated on M2. May I move to new board M2? Two lines terminated on L1. Does it matter if they are switched on new board L1? What L1 lines used for? Thanks Russ. It is so nice to get your message again.
What 24 VAC and 24 COM terminals on old board are used ? And on new board same position, there are SEC and COM terminals. What is that for? Are they the same?
So L1 is 110V power supply? Is there positive and negitive has to be careful?
connected all the lines. nothing was running when I pressed door button. I tried to measure the voltage between two L1 lines. I didn't see any AC value. Is it my power supply issue?
I measured each L1 line to Neutral. Nothing was seen. voltage needle did not move.
Heating is working under the Thermostat control. It seems taking a longer while to start flame when I set the temperature up. But it should be not big issue. It is awesome. I feel like to get a big success. Without your expertise and kinds of guide, this would not happen. It is really appreciated for your valuable assistance. I believe every customer got or will get the same feeling like me. I will refere to other around guys if their house furnace happens to have any issue like me. It is a very good experience of my DIY.
Thank you very much. Russ