Honeywell Thermostat

Old 06-14-07, 08:51 PM
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Honeywell Thermostat

Electric Furnace
Central Air

Old thermostat was a honeywell and the new is a honeywell RTH230B. Everything matches up for the wiring except that the old thermostat has a W1 and a W2. The new thermostat only has a W. Any insight to this would greatly be appreciated.

Old 06-18-07, 12:16 AM
Join Date: Mar 2006
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The old thermostat has a two-stage heating system. If you have only one "W" wire you would connect it to the "W" terminal on the new thermostat.

If you have two "W" (W1 & W2) wires then you need a different thermostat. The one with only a "W" terminal is a single-stage heating thermostat.

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