This is how i wired my honeywell lyric t5. it operates the heat just Honeywell t5, i think i wired it wrong. Honeywell t4 wiring diagram
Honeywell T5, I think I wired it wrong. - DoItYourself.com Community Forums
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Honeywell t4 pro thermostat wiring diagram
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Honeywell T5, I think I wired it wrong. - DoItYourself.com Community Forums
Honeywell T4 Wiring Diagram - Wiring Diagram
Honeywell Rth6360 Wiring Diagram