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One extra wire?

krybrn1
Community Member

I currently have a Robert Shaw thermostat, it has all the wires that a Nest one requires, but it also has a wire that is lettered EW1 and I can't find it on the compatibility site. What is the EW1 wire and will a Nest work on this system?

 

1 REPLY 1

laurentbourg
Silver Product Expert
Silver Product Expert

Please upload a pic of your current wiring and if you can provide some details of your hvac setup that would be great (e.g heat pump with emergency heat etc)