Have HVAC Questions? Ask an HVAC Expert for Answers
Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond as typing, researching and adding links takes me time to do so please be patient and often I will ask you questions to narrow down the issue to get is diagnosed correctly.
Does the ignitor glow?
OK does the inducer fan come on and run and do you have a volt meter?
OK can you remove the ignitor and visually inspect it for a break or burn spot?
OK you can check and make sure your condensate line is not backed up or blocked as well. Also if you can get to the control board see if it is flashing an error code.
Look at the pattern those lights are flashing, match the pattern up to the lost on the backside of the panel you removed form the furnace there should be an error code list there to compare to a red light on at all typically means an error.
OK this may be a thermostat issue then, if you have a paperclip you can tape down the panel safety switch and touch the R and W thermostat connections together with the paperclip and hold that on them to see if it starts up and heats...if so you have an issue with the thermostat or wiring from there to the thermostat. CHeck the batteries at the thermostat and the wiring to the thermostat if it starts with the paperclip.
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