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Can you provide more details.
1.Model on unit
2.What you are referring to as fan terminator switch
3.Do you have a volt meter for troubleshooting?
I would need model on furnace and you would need the meter to troubleshoot.If it is a gas furnace, model should be on a label on inside panel above burners.
Sounds good, look for the label either inside right or inside let above burners for model. Let me know when ready to troubleshoot.
Excellent. Or first step is going to e to determine if we have 120v into the transformer and 24 volts out.See diagram below
Have to step away but will be right back.
Sorry about the delay.My daughter stopped by with my grandkids.I am back.Transformer will look like this.May be inside this panel.
I can not see wire colors good in photo, but two going in from main power should read 120v and two coming out to thermostat and controls should read 24 volts
Next check on board between Neutral and XFMR and between neutral and L1,See below
120v at both places?
Those are the terminals on the board
L1 and neutral are power in to board and XFMR and Neutral are power out to transformer. Also check for 24v on board between 24VAC and COM
Ok I am looking at furnace diagram.It shows the terminals I listed. Lets do this, Checj for 120v between these two terminals L1 and L2
OK sounds like you have a defective board if we have 120v to board but light is not lit.
Lets do this, Turn thermostat to heat and see if we get 24v between TH and TR
Bypass the limit you put in and lets see if we get the 24v
Absolutely just make sure it can not touch cabinet or anything that would short it
Try connecting R and W at thermostat and bypass thermostat.
How many wires to thermostat and where do they connect?
Connect the white from RH and peaches from W together
I am going to open this to other experts who may be able to assist you quicker. If you prefer to just call in an onsite tech to get this solved so pipes do not freeze might be best ting to do.If no other expert can help, you can request a refund of your deposit.