Zoe from ScottFleck

[ScottFleck]

I am in the US. 

 

 

 

[David_K]

If your question is if your system is compatible with Nest Thermostat then yes, it's compatible with all models of Nest Thermostat. Here's the setup steps you need:

Get started with your Nest Thermostat - Google Nest Help

[ScottFleck]

The T-stat thinks I have a heat pump and turns on the A/C when in heat mode. Blows cold. I set up as single fuel and rest twice. 

[Patrick_Caezza]

@ScottFleck 

Was this working before the error message?

The M20 error means no voltage is sent to the C or R wires, and you can check for 24vac between R and C if you have a multimeter. If there is nothing, then the problem is with the unit.

If there is no voltage, then check these things

• The unit breaker isn't tripped
• The fuse on the control board in the furnace
• The drain isn't clogged, causing the safety switch to trip.
• The filter is clean and installed correctly
• All of the unit covers are correctly installed

[ScottFleck]

I never had any codes. A/C runs when I turn the heat on. That’s the only problem. 
The previous t-stat is on it now so I can have heat. The whole system works perfectly with the old one. 

[ScottFleck]

Everyone asks a second question, I answer and then no response. This is by far the worst customer support team I have ever encountered.