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Questions related to automation of home elements like: heating, ventilation, air conditioning, light, audio-video systems, security, intercoms and domestic robotics. For questions related to the Internet of Things, consider asking at the IoT site (iot.stackexchange.com).

1 vote

How can I modify a 4 wire thermostat to a new thermostat requiring c wire?

Testor 101 answered, since there is no cooling unit use the cooling wire as C and leave the Y terminal on the thermostat empty.
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How can I modify a 4 wire thermostat to a new thermostat requiring c wire?

I attempted to replace my thermostat with a fancy new Trane z-wave enabled model. To my dismay my home was only wired with a 4 wire setup with no 5 hidden in the bundle. I followed Insx on the web …
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