Need help replacing fan coil honeywell thermostat with Nest Learning Thermostat

[kayemm]

Hello Team

Just bought Nest Learning Thermostat from Costco. Trying to replace Honeywell thermostat for fan coil unit. Attaching pics of existing thermostat wiring. Unable to figure out which wiring will go where. Any assistance will be highly appreciated. Also if anyone can recommend Molex plug 9-pin converter to work with Google Nest Thermostat.

Thanks

K..Thermostat Wiring With Molex PlugHoneywell Thermostat

[Patrick_Caezza · Accepted solution]

That looks like it is a line voltage type of thermostat and isn't compatible with any of the Nest thermostats.

[Patrick_Caezza · Accepted solution]

That looks like it is a line voltage type of thermostat and isn't compatible with any of the Nest thermostats.

[Markjosephp · Accepted solution]

Hello folks,

I wanted to ensure that everything was covered here.

Thanks for determining its compatibility, @Patrick_Caezza.

@kayem, high-voltage thermostats are often built into the wall and typically have 2 to 4 thick wires coming out of them. Wire nuts are often used to connect the thermostat to the system wires. Due to the high voltage that they carry, they should only be installed or uninstalled by a professional. Please let us know if you have any other questions or concerns.
 

Thanks,

Mark 

[Markjosephp]

Hi kayemm,

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

Thanks,

Mark

[kayemm]

Hello Mark

Thanks for reaching out..I think I have what I need..Thank you so much to this community for helping me out.

Thanks

Kay..

[Markjosephp]

Hello kayemm,

Sounds great! I'm glad to hear you've got the answer you're looking for. It looks like we can consider this one complete, so I will lock the thread within 24 hours unless I can help out with anything else.

Best regards,

Mark