Weather king furnace model 90rj07efs01 replace board getting 4 flashes on ok light can some one tell me where i can find trouble codes for this or tell me what the code is thanks
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Only a few...the furnace is rated @ a certain design static pressure, and when you close the vents...it could overheat the furnace, short cycling, etc.
Hi, You need to remove the panel that was covering the circuit board to find the chart that is glued to it. This is the error chart and will lead you to the problem by the amount and how many times the led flashes. For instance, a steady flash, 4 long and 3 slow, the chart will tell you like 43 or 4-3 to go there and will tell you what is taking place. This will almost do the trouble shooting by it self. Get back to me if you need more help. Look for this chart as they all have one. Shastalaker7
Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases
Door safety switch. You are sure you have power to furnace? jump out the G and R terminals on the furnace control board or turn your thermostat to Fan On to check. Make sure the door safety switch is in the closed position. Fan should come on. No fan, no power to unit. Check Emergency switch, circuit breaker and there may be a fuseable link in the wiring somewhere either above the unit or a condensate safety switch. Get power to the unit. Also check to see if there is a small fuse in the wiring inside the furnace or on the circuit board.
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