bryant evolution control board
#1
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bryant evolution control board
Hi i have a issue with a bryant evolution gas furnace original problem was the igniter burnt so had it replaced that fixed the problem but now the igniter would stay on for the heat cycle .the service guy said most likely the board is no good.so i ordered a used board from the internet installed it now the igniter works as it should but the blower fan stays to high all the time is there a way to set the fan speed .also i'm not sure if i ordered the right board the number on my old board is CEPL130456-01 that matches the new board but there is another # on the new board hk42f20224008 anyone know if these are the same boards .Thanks
#2
I'm confused.... you ordered a new board or you bought a used one from eBay ?
There is a manufacturer part number and a trade part number.
The board only turns on power to the blower motor. The speed is changed using different motor speed control windings. Check and see if your motor has multiple wire colors like: red, blue, black, white.
There are DIP switches on the board that control the blower. Did you set them ?
There is a manufacturer part number and a trade part number.
The board only turns on power to the blower motor. The speed is changed using different motor speed control windings. Check and see if your motor has multiple wire colors like: red, blue, black, white.
There are DIP switches on the board that control the blower. Did you set them ?
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Thanks for reply yes I got a used one I called around it is the correct board..the switches were set same as the old board the fan connection has blue.yellow green and red wires
#4
Does the furnace fire up and work normally..... blower aside ?
If yes... that may signify a defective control board as the board controls when the fan shuts off.
If there is a wire on the G terminal.... try disconnecting it and see if the blower stops.
If yes... that may signify a defective control board as the board controls when the fan shuts off.
If there is a wire on the G terminal.... try disconnecting it and see if the blower stops.
#7
If the fan speed is correct with the old board but not the new board.... that would seem to indicate a motor lead on the wrong terminal.
If you look at the board.... there should be a place for the HEAT motor wire and the COOL motor wire. That black plug should be labeled.
If you look at the board.... there should be a place for the HEAT motor wire and the COOL motor wire. That black plug should be labeled.
#10
Your picture may be too big. http://www.doityourself.com/forum/el...-pictures.html
I'm trying to find more info on that board. You said only the VS and HSI terminals have wires in them. The HI and LO do not. I don't know what's powering the blower if the HI and LO aren't connected.
I'm trying to find more info on that board. You said only the VS and HSI terminals have wires in them. The HI and LO do not. I don't know what's powering the blower if the HI and LO aren't connected.
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#14
I had thought the blower connected to slide on terminals. I don't see them on the board. I can't find a manual for that board. Post the model number for the furnace.
There will be a place where the blower speed can be reconnected for different speeds.
There will be a place where the blower speed can be reconnected for different speeds.
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Hey Pete looks like i solved the problem after a lot of research i switched the model plug its a small circuit board from my old board to the new board on terminal PL4 on the control board the fan now runs on low speed and on high if the thermostat is not satisfied after several minutes .hope it continues to work normally .Thanks for all your input and hope this helps others ...