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View Full Version : Troubleshoot on two-wire thermostat


Denisel.
Oct 29, 2010, 08:35 PM
I have a boiler. I have two wires to work with. One is white and the other black. The honeywell thermostat I use is for heat only. It is not working at all. The labels on the thermostat have R, W, and Y. I NEED HELP

Joshdta
Oct 30, 2010, 06:50 AM
One to r one to w