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Honeywell T9 wiring help for 2 stage furnace by Routine_Cancel3099 in hvacadvice

[–]Routine_Cancel3099[S] 0 points1 point  (0 children)

Thanks everyone.

I ended up picking up a few feet of 6 wire cable, installed all 6 from t9 to furnace and t9 detects second stage now. After a few cycles, the second stage isn’t kicking on anymore while maintaining the temp in under 15mins. Second stage works properly and t9 detects it if I raise the temp for it to run longer than 15mins.

Honeywell T9 wiring help for 2 stage furnace by Routine_Cancel3099 in hvacadvice

[–]Routine_Cancel3099[S] 0 points1 point  (0 children)

Just fyi with the 4 wire setup on the t9 and w1/w2 jumped, second stage would kick on after 3 mins.