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QUESTION:Here is a similar problem to a guy with a Trane furnace who posted on
December 10. Here were his symptoms
- Thermostat kicks in (call for heat)
- Little fan comes on
- Glow Bar comes on
- Valve clicks and gas lights
- As glow bar is going out, (3-5secs) there is a loud click and gas
turns off
- Glow bar lights up again
- Valve clicks and gas lights
- As glow bar is going out, (3-5secs) there is a loud click and gas
turns off
- About the third time, the full blower comes on and starts blowing
cool air thru the house and does not stop..(assuming some electronics
is telling blower that heater is still on and to keep blowing) the
glow bar and gas never try to reignite.
Mine is simlar. I have a York P1CKD20N09601A furnace and all the
manuals. My furnace goes through this sequence five times and then
the main blower goes on. Looking in the manual it says that it will
try five times and then give up if thge gas valve (White Rodgers
36E24) is bad or I have low gas pressure. A bad flame sensor (or
dirty one) would only try to reignite three times with sixty seconds
in between attempts. I verified this by taking the wire off the
flame sensor. It only went three times before the main blower came on
and waited the documented sixty seconds. I cleaned the sensor anyway.
ANother dignostic is the lights on the controller. It blinks eight
times which in the manual means bad gas valve or low gas pressure.
What confuses me is that it will only happen early in the morning or
at about nine at night. The first couple of times this happened
spaced out by a week, it took 3 hours for the unit to start working
again without me doing anything. The last three times, it has started
working in 15 minutes. But it has been happening more frequently
lately, every other day or so. It has also been getting colder, but I
can't really correlate it with more furnace usage.
ANSWER: I plan on doing that. What is holding me up is that it won't stayed
broken long enough. Could a tech actually figure out what is wrong if
it is working properly? The next time it fails I am going to video
tape how it looks before it starts working again. Don't know if that
wil help in any way. But everytime I head for the phone to set up a
visit, it starts working again for a few days, no matter how many
times I cycle it. Like its posessed or something.
No electronic thermostat or messing with the 220 V (previous post).
ALso can a tech measure gas flow or will he just go by the diagnostics
and just replace the gas valve. I would hate to pay all that much and
find out it truly isn't the cause.
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