Outrageous Honeywell Thermostat Wiring 1 2 3 4

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Honeywell thermostat wiring 1 2 3 4. I have to replace it. I have a honeywell pc8900. Also discovered that w2 second stage heater had not been functional previously but now came online once the wifi thermostat honeywell 9580wf was connected.

How do i convert wires from the numbers 1 2 3 4 to letters. Honeywell thermostat wiring instructions from diy house help. Everything has been running great so far tonight.

Phillips jeweler s screwdriver. My old honeywell thermostat three wires is number 1 2 3 number 1 wire is red number 2 wire is number wire is blue. Tape the fuse box closed with strips.

Verify that the electricity is turned off by plugging a table lamp into a wall outlet and turning it on to see if it works. View online installation instructions manual for honeywell t8401c1015 electronic thermostat 1 heat 1cool thermostat or simply click download button to examine the honeywell t8401c1015 electronic thermostat 1 heat 1cool guidelines offline on your desktop or laptop computer. This type of wiring requires a line voltage thermostat and is not compatible with low voltage thermostats.

How to wire a 2 wire thermostat to a 4 wire system by marshal m. Took the wires for the thermostat 1 2 3 4 stripped 2 more wires for w2 and c from the bundle and connected directly to the furnace terminals. 1 red wire 2 black 3 yellow 4 green read more.

Revision history for how to wire a honeywell thermostat with 4 wires. I brought a honeywell rth2410. If you see thick black or red wires then you have a line voltage system.