Furnace runs properly occasionally
Posted: Sun Feb 21, 2010 12:33 pm
This is my first time using this forum so if I asked my question in the wrong area let me know. But here's my question; I have a M1MB 070A BW electric furnace and my problem is that it runs correctly when it wants to, and by that I mean it will fire up and run as it is supposed to for a day sometimes less and then the Control Light LED flashes a false flame/internal control fault, at that point I power off the unit and let it sit off for 15-30 min and power it back on. Now this is when it gets strange, the unit goes through its normal power up sequence:
Control power OK-sometimes its fine other times its not,
pilot engages OK-never had a problem here,
Good flame signal-same problem as Control power with an added twist that sometimes it will get a good flame until the blower starts then it gives the ff/ic fault
blower-starts always no matter what the control panel reads.
I was just wondering what could cause such erratic behavior in my furnace.
Control power OK-sometimes its fine other times its not,
pilot engages OK-never had a problem here,
Good flame signal-same problem as Control power with an added twist that sometimes it will get a good flame until the blower starts then it gives the ff/ic fault
blower-starts always no matter what the control panel reads.
I was just wondering what could cause such erratic behavior in my furnace.