Simple Comfort Pro 4011 to Nest Learning Thermostat Wiring

[gursahibsahni]

I have a Simple Comfort Pro 4011 installed in my apartment. I am trying to map the wiring to my nest learning thermostat. 

The following connections are currently done 

Blue - Y

Brown - W

Green - O/B

Red - RC

Black - C

The thermostat has RC, C and O/B and I put those connections on the nest thermostat. For Y i use Y1 on nest and for W I chose W1 on nest. 

When I run it, the thermostat runs and then it trips after some time. Would you know the issue? 

It is a condo apartment in toronto.

[Markjosephp]

Hello gursahibsahni,

Thanks for reaching out! It seems like you've made the basic connections between your Simple Comfort Pro 4011 and Nest Learning Thermostat, but the intermittent tripping might indicate a wiring issue or compatibility problem. Let's sort this out.

Please share with us a photo of the old thermostat and Nest Thermostat's wiring setup. Double-check your wiring to ensure there are no loose connections or exposed wires. A loose connection can cause a short circuit, leading to the thermostat tripping. Also, gather the power readings in the Technical Info settings.

Keep me posted.

Regards,
Mark