What does the timer mean and how do I stop it?

[Julz88]

When I turn on  Cool it stays on for only 2-3 minutes and then turns off, then a timer counts down and it'll come back on. I factory reset it but that didn't work. Any advice?

[Patrick_Caezza]

@Julz88 

Which Nest thermostat do you have?

How is it wired? Is there a C wire installed?

[Julz88]

@Patrick_Caezza hello, it's the Nest Thermostat model G4CVZ and yes there is a C wire connected. I checked the wiring info and they are showing as connected. I'm not sure if it's a problem with the Thermostat or maybe the condenser. I've attached a picture of the timer. When the timer reaches zero Cool will turn back on but only for 1-2 minutes then goes off  and counts down again. Hope this info helps.

 

[AxelD]

Hi Julz88,
 
Thanks for posting and sorry to hear about this situation with your Nest Thermostat that is not keeping on the cooling. No worries, help is here! I'd like to ask a few more questions. 
 

1. Have you checked your air filter? Please check if it's dirty or if there is a clog. A clog in the air filter can limit how much air flows over the cooling coils. 
2. Have you checked the voltage on the C-WIRE?
3. Have you experienced extremely hot weather lately?
4. Do you see a power error code on your thermostat?

I'll wait for your responses, keep me posted

Regards,

Axel.