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Discussion Starter #1
We've been doing small DIY upgrades on our home and today my husband installed a Honeywell RTH6350 t-stat. It was to replace our much older, working one.

All power was turned off before he started and the install seemed to go well even with that pesky B wire that was no longer needed. Every wire appears to be in it's rightful spot. We have checked and double checked. We turned the power back on, programmed the t-stat to our specific needs and...no heat. The furnace never fired.

The central A/C unit and fans work fine. Our furnace is a ThermoPride fueled by oil. The entire unit is quiet. Like I said, the fan works fine. There's just no heat. I did press the red re-set button twice, there was about 1 hours between tries, and nothing. The two little yellow lights located near the re-set briefly light up when pressing the re-set, but they quickly go off and the furnace remains quiet.

How bad have we screwed up our furnace? What can we do to try and fix it? I'm pretty sure it's still under warranty, but would that cover something like this? Should we just leave it alone and call our HVAC people tomorrow?

Is it some kind of fried fuse or circuit board?
 

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I'm now thinking it may in fact be a wiring issue. If I post pics can anyone help?

I've been reading and following the troubleshooting guide for ThermoPride and keep coming back to issues with the wire connections even though the fan, A/C is working.
 

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Not sure what B does on oil and our oil guru Beenthere may know and help you later.

However was it connected on the old thermostat?

Did the old thermostat have a jumper between R and RC or RH?

You have that on the new one and if it was not removed you may have blown a fuse or the transformer if the AC has it's own transformer.

NO it won't be covered under warranty if you messed up the wiring.

Check the wiring diagram on the furnace to see where B is supposed to go.

Need 5 posts B4 you can post pics.

Say Hi on the Intro section on the main page and reply again till you get 5 (anti-spam measure) and then post pics.
 

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The pictures will be nice. (how it's wired and wiring diagram) M/n and make of the furnace would also help. That thermostat can be configured for many different system types. Which "system setting" did you select?

Cheers!
 

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Would need a pic of the thermostat wiring, and of the wiring at the control center of the furnace. Your furnace may or may not be a dual power source set up.
 
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