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hi, i have a problem with my heater and the heater won't come on and the gas valve won't open. i measured the voltage to the ignitor and im not getting any voltage
i even bypass to the air pressure switches still didn't get any voltage
Yes, to both 1 and 2.
The ignitor just doesn't turn on at all.
It's a hot surface ignitor.
Ok, Great. Now unplug the molex connector on the ignitor,Place leads of your meter into the molex plug and let's see if we are getting 120v when pressure switch closes.
Plug coming to ignitor of course as ignitor is unplugged
The plug to the ignitor is not giving any voltage.
Nope, it won't glow. After a minute of sucking on the hose, it still won't turn on.
None of them are open.
I don't have a manual in front of me for your unit, but are you getting a flash code and if so, there should be a troubleshooting chart on front of furnace indicating what the code stands for such as 2 flashes (open limit).
Are we getting such a code and if so what is the code say?
Problem solved: it turned out that the pressure switch was stuck so it wouldn't close unless I sucked on it hard. It got unstuck and I tested it a few times and it works again and again. Thanks for the help though.