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vcoderv
Community Member
since ‎10-28-2024
‎11-20-2024

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Hello. I have 2 3rd gen thermostats. Whenever one zone calls for heat, both PLATES start making electrical buzzing sound. I measured the voltage and it was 27V. Sounds like it is in range with what i see on googles compatibility list (20v-30v) voltag...