Thermostats (Page 7)
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my honeywell t9 says it's heating but my furnace isn't kicking on, help?
This issue occurs when the Honeywell T9 (RCHT9610WFSW2003) registers a "Call for Heat" on the display, but the physical furnace ignition sequence nev…
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my ecobee smart sensor says it detects occupancy but the battery died in like a year, not five. what happened?
The ecobee SmartSensor utilizes a Passive Infrared (PIR) sensor to detect movement. While the advertised five-year battery life is based on a theoret…
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the eco+ icon is always on my ecobee screen and it's preheating my house at weird times, how do i control this?
The "eco+" icon appearing on your ecobee SmartThermostat Premium indicates that the device is currently executing an active energy-saving event. When…
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my ecobee premium keeps pausing my ac because it thinks a window is open, but all windows are closed. what gives?
This issue occurs because the ecobee SmartThermostat Premium is receiving a "state change" signal from a paired SmartSensor (specifically the door/wi…
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where's the best place to put the ecobee smart sensor in my bedroom for sleep comfort?
The ecobee SmartThermostat Premium relies on remote sensors to solve the "cold hallway" problem, where the main thermostat reads a comfortable temper…
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can i turn off just the time of use feature on my ecobee without disabling all the other smart stuff?
The "Time of Use" feature in the ecobee SmartThermostat Premium is a specific subset of the eco+ suite designed to shift energy consumption to off-pe…
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my ecobee smart thermostat won't turn on at all after i tried installing it myself, did i fry it?
The most common cause for a "dead" ecobee SmartThermostat Premium upon initial installation is a break in the 24VAC power loop, rather than a fried c…
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ecobee premium keeps using my expensive aux heat instead of the heat pump, how do i stop that?
The ecobee SmartThermostat Premium is designed to maintain a tight temperature glide, but by default, its "Auxiliary Heat" logic is often too aggress…
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just installed a honeywell t9, followed all steps, but it says "welcome" and won't do anything else
The "Welcome" screen on a Honeywell Home T9 (RCHT9610WFSW2003) is the initial boot sequence. When the device hangs on this screen and refuses to prog…
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how do i know if my old system is compatible with the honeywell t9 before i buy it?
The Honeywell Home T9 (RCHT9610WFSW2003) is a low-voltage 24VAC system controller. The primary reason for incompatibility is a mismatch between the t…
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honeywell t9 won't let me set the heat above 90 degrees, is that a limit or is mine broken?
This is not a hardware failure or a software bug; it is a hard-coded operational limit built into the Honeywell Home T9 (RCHT9610WFSW2003) firmware. …
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my honeywell t9 says it's heating but cold air is blowing, or the aux heat kicks on when it's set to cool
This behavior is a classic symptom of a "Reversing Valve" configuration error or a wiring mismatch between the T9 thermostat and your heat pump's con…
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installing my honeywell t9 and the manual says i need a c-wire but i don't see one, now what?
The Honeywell Home T9 (RCHT9610WFSW2003) is a high-performance Wi-Fi thermostat with a backlit color display and remote sensor support, all of which …
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i set my honeywell t9 to cool but the house is still heating up, it's not responding, help?
The failure of your Honeywell Home T9 (RCHT9610WFSW2003) to trigger the cooling system typically stems from one of three root causes: a logic mismatc…