Hello,
I have a weird issue going on with my heating system. I have a 6 zone valve gas heating system with steam boiler and baseboard heats/radiators across the house.
Recently, I have started to replace the Honeywell thermostats with google nest thermostats.
I have installed two google 3rd gen and two E gen thermostats.
For some reason, the taco valve couldn't power on the 3rd gen thermostats but they work fine for E gen thermostat so I powered the 3rd gen with the AC/handler wires.
My problem is that when not in use, I am seeing yellow light flashing on my taco valve system for both E gen thermostats, however, when the heat is turned on at the req temp, the yellow light becomes solid, then the red light comes on and heat seems to be working through radiators.
Is the flashing yellow light normal or is there anything I should do to fix this?
Thanks!
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