Hello,
Trying to troubleshoot a Coleman 7670C856 - It won't hit it's second stage. Heats for about 10min on stage 1, blower runs for about 15min and then shuts off (I assume because insufficiant heat). The burner continues to run constantly. Just replaced valve to no avail. HO house won't heat above 60deg.
Thanks,
Any suggestions would be appreciated.
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