Will start IF the power is cycled. 50A51-225
Amana model GUIV115CX50, s/n 0204115290, mfg P1230207F
controller = Model 50A51-225 Amana part # 1027712
Aprox 20 yrs old.
Controller board replaced 2 yrs ago by HVAC prof.
Ignitor and PL replaced end of last heating season by homeowner (no, I did not touch the element).Furnace fails to start; no activity at all. BUT if the power is turned off (wait 15-30 seconds) and power turned back on, then in 5-10 seconds the furnace starts up and runs normally. Prob for about 2 wks.
But wait… there’s more; Today, after an hour or two of operating just fine (w/ power cycle start up) (Fan = on, heat cycled fine) the furnace just stopped with thermo showing call for heat and fan showing on. Cycled the power an hour or so later and it ran fine.
Needs another board? Or….
Update:
Controller board replace 2017 (not 2 yrs ago) with 50A51-225 PCBBF115S (the existing board… may now be defective)
Does the fan continue to run when this happens ?
Originally Posted by denverdave
Needs another board? Or….
A service call!
Post Likes – 1 Likes, 0 Dislikes
Needs another board? Or….
As stated by “pecmsg”, it needs further troubleshooting by a tech on sight.
The forum rules do not allow us to walk you through any diagnostics for this problem. We only provide non technical guidance to homeowners.
We highly suggest you reach back out to a contractor to reduce the time this unit will be out of service.
If you insist on troubleshooting this yourself, please visit a DIY forum with your questions.
Sorry we could not be of assistance.
Last edited by rundawg; Today at 08:32 AM.
Instead of learning the tricks of the trade, learn the trade.
YOU can change parts all day long, a waste of money. You need someone that can find out why these parts are failing early!