Originally Posted by
VTP99
I have a 50A55-843 universal integrated fan control. My problem is with no t-stat wires connected the control still starts up the blower and inducer motor. I also have no low voltage on the control terminal block. Yes the transformer is plugged into it. Whats up with that ?
When system lockout occurs, the circulator blower is energized at heat speed, and, if flame is sensed, the inducer blower is energized.
Any flashes codes being displayed?
Rollout or Limit Open ?
Did you try a reset of the control?
Send me an email and I will forward you some info on this control to help you troubleshoot the problem. I don't post technical info in this "OPEN" forum.
Instead of learning the tricks of the trade, learn the trade.