Hello from another newbie:
I just got off of a online chat with Honeywell regarding an odd issue that I've been having for some time. I have two independent HVAC systems with their own Honeywell RT6500 wi-fi thermostats connected. One HVAC system is less than 6 months old, and the other is 2 years old. Both were installed by the same service provider. I do not know the brand and models numbers of the heater units in question.
The problem is that I have to wait until the heat cycle of the heater(s) is complete (no fan or anything else operating) before I can increase the heat set-point. I can decrease it without issue. If I try to increase it when any part of the heater is operating, the heater stops, and then restarts with the fan only (no heat). If I try to turn the unit off at the thermostat and restart, only the fan runs. I get no heat. If this happens, the only way I can resolve it is to cut power to the circuit that supplies power to the heater and the thermostat, and reset. Both units do this.
To avoid the problem, I use the Honeywell iPhone app to see if the unit that I would like to change the set-point on is operating (heating or fan running). If neither heat or fan symbol appears, I know that I can increase the set-point and everything works fine.
Honeywell had me pull the red and white wires from the thermostat and connect them together to see if the fan starts. The fan did start. They then had me disconnect the wires to see if the fan stopped. It did stop after about a minute or less after being disconnected. Honeywell told me that it's probably a feature in the heater that runs the fan to clear the ducts of heated air. I knew this already. Then they told me to contact the heater manufacturer. I might have to ask my service provider to do this since I don't have the necessary information. I have a maintenance contract with them. But I personally installed the Honeywell thermostats before the units were replaced.
I have asked one of my service provider technicians about this issue in the past, and he said he never heard of it as they only use Google Nest thermostats.
So, here I am asking if anyone has heard of such a problem? I'm tempted to buy a different brand of thermostat, install it, and see what happens. But smart thermostats are not cheap enough to buy one as a test/spare unit.
Any suggestions?
Thank you!
I just got off of a online chat with Honeywell regarding an odd issue that I've been having for some time. I have two independent HVAC systems with their own Honeywell RT6500 wi-fi thermostats connected. One HVAC system is less than 6 months old, and the other is 2 years old. Both were installed by the same service provider. I do not know the brand and models numbers of the heater units in question.
The problem is that I have to wait until the heat cycle of the heater(s) is complete (no fan or anything else operating) before I can increase the heat set-point. I can decrease it without issue. If I try to increase it when any part of the heater is operating, the heater stops, and then restarts with the fan only (no heat). If I try to turn the unit off at the thermostat and restart, only the fan runs. I get no heat. If this happens, the only way I can resolve it is to cut power to the circuit that supplies power to the heater and the thermostat, and reset. Both units do this.
To avoid the problem, I use the Honeywell iPhone app to see if the unit that I would like to change the set-point on is operating (heating or fan running). If neither heat or fan symbol appears, I know that I can increase the set-point and everything works fine.
Honeywell had me pull the red and white wires from the thermostat and connect them together to see if the fan starts. The fan did start. They then had me disconnect the wires to see if the fan stopped. It did stop after about a minute or less after being disconnected. Honeywell told me that it's probably a feature in the heater that runs the fan to clear the ducts of heated air. I knew this already. Then they told me to contact the heater manufacturer. I might have to ask my service provider to do this since I don't have the necessary information. I have a maintenance contract with them. But I personally installed the Honeywell thermostats before the units were replaced.
I have asked one of my service provider technicians about this issue in the past, and he said he never heard of it as they only use Google Nest thermostats.
So, here I am asking if anyone has heard of such a problem? I'm tempted to buy a different brand of thermostat, install it, and see what happens. But smart thermostats are not cheap enough to buy one as a test/spare unit.
Any suggestions?
Thank you!
source https://hvac-talk.com/vbb/threads/2227292-Can-t-increase-heating-setpoint-until-full-heat-cycle-is-complete-per-thermostat?goto=newpost
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