Honeywell T6 Thermostats

[opey456]

Installed a couple of Honeywell TH6320U2008 thermostats on Rheem heat pumps, both failed within a couple of days, voltage from thermostat to reversing valve varies from 5-23 volts which wont keep valve energized. All other control voltage is dead on 26 volts. All new control wire to both. Have since replaced with some Emerson thermostats and have had no further issues. Just curious if others have seen this issue with any of the T series line.

[STEVEusaPA]

Did you have the common hooked up? Seems odd that both failed. Did you buy them both at the same time/same place?

[opey456]

Always have a common. Both were purchased at same time. We buy them 4-6 at a time usually, but usually are using them in straight ac with gas furnace application.

[joemach]

I have not seen this problem in the dozen or so I have installed. Almost all heat pumps.

I still prefer the Honeywell 8000 series.

[2sac]

I sell a shitload of them and rarely have warranty claims

[opey456]

1st ones I have had any issues with. Just kinda odd to have 2 in the same house fail the same way. Just thought someone else may have seen a issue similar. I am no a big fan of the stab-lock wire connections, but I know most thermostats are moving that direction.

[GenesisRefrig]

I put in tons of these and have not had a problem until last month. New furnace with heat pump. New wiring and T-6 thermostat with 3 heat, 2 cool. Furnace board kept blowing the 3amp fuse. It turned out to be a direct short in the thermostat. Put a different Honeywell statin, and problem solved.

[R600a]

We sell a ton of the t series and have not had any problems. Our only warranty replacement was a misdiagnosis and the stat was fine.

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[Rovert]

There is a bad batch of T6's. We had five in a row that wouldn't run heat pumps. All our problems were on dual fuel systems but bench testing showed that that wasn't the only issue. Honeywell replaced (upgraded) them through our distributor.

[R600a]

I am glad to hear they took good care of you that is the important thing.

There is a bad batch of T6's. We had five in a row that wouldn't run heat pumps. All our problems were on dual fuel systems but bench testing showed that that wasn't the only issue. Honeywell replaced (upgraded) them through our distributor.

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[opey456]

Both of these were duel fuel applications

[DOGBOY]

we had one this week. Installed for 8 days on goodman heat pump. would not bring on the contactor, auxiliary or emergency heat. Fan would run no problem. The voltage would fluctuate between 5v and 20v this did have a common connected.

[Core_d]

Had my share of bad ones...


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