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How do I turn on the thermostat? It's a Lennox thermostat Model 51M35. I went into the basement into the furnace and turned on the gas by moving the switch to "ON" but the thermostat has not turned on. The screen is blank and no matter which buttons I press, nothing happens.
Hi R.G. What do you mean check the power? The breaker has the power running to the furnace...
I don't have AC. My dad usually turns off the furnace for the summer time and turns it back on for the winter. He is able to turn on the thermostat too but he's no longer around to ask.
There were so many numbers I don't know which one is the model number, but I think it's G61MPV-36B-070-10
Well I saw the switch inside when I took off the front panel that switch from "ON" to "OFF" but that didn't seem to do much. I'm not sure if there is a switch other than that...
The breaker has the switch ON for the furnace.
I will check...
No, there are no LED lights on.
Hi there. Thank you very much for your help, but I figured it out. The power switch was hidden but I found it. Thank you for your time.