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coldbob
Jan 3, 2008, 07:46 PM
I am trying to install a new Honeywell rth221 thermostat. I have three wires that are white, red and green. I must be installing them incorrectly because the heat does not seem to come on no matter how i change them. Please help.
KeepItSimpleStupid
Jan 3, 2008, 09:23 PM
White to W
Red to Rh
Green to G
therinnaiguy
Jan 4, 2008, 06:26 AM
You may have popped the fuse in the furnace replacing the thermostat witout turning off the power first. KISS is correct in his recommendation.
KeepItSimpleStupid
Jan 4, 2008, 10:13 AM
OOPs, forgot about that one (popping the fuse).