A:AnswerHi Sam, thank you for your question. This thermostat works with low voltage (24 VAC) systems only. If you have a low voltage system we need to know how many total wires you have and which terminals are being used on your current thermostat to verify compatibility. If you have a line voltage system, we need to know what is the voltage, wattage and amperage to recommend you a compatible thermostat. Our tech support team is available 7 days a week at (800) 633-3991 or through Private Message at our Honeywell Home Facebook account. - Maria
A:AnswerHi RonB, thank you for your question. You have to use the same wires that you are using on your current thermostat. We will be happy to help verifying compatibility and providing recommendations for a C wire depending on your system type and amount of wires. Feel free to contact our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Maria
A:AnswerHi 5730, thank you for reaching out to us. This thermostat works with heat and ac units. We will be happy to help verifying the compatibility of this thermostat and your system. We need to know how many total wires you have and which terminals are being used on your current thermostat. We are available at (800) 633-3991 or through Private Message at our Honeywell Home Facebook account. - Maria
A:AnswerHi Dan, thank you for reaching out to us. We will be happy to provide information about this thermostat and help verifying its compatibility with your system. We need to know how many total wires you have and which terminals are being used on your current thermostat. Feel free to contact our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Maria
A:AnswerHi Grant, I'm not showing SwitchBot as being one of our compatible partners. This model is compatible with the Total Connect Comfort app and can be controlled through Amazon Alexa, Apple Home, Google Assistant, and IFTTT. -Joey
A:AnswerHi Rseb, thank you for your question. The W2 wire should be connected to the W2,Aux/E terminal. We will be happy to assist you with the complete wiring at (800) 633-3991 or through Private Message at our Honeywell Home Facebook account. - Maria
A:AnswerHi Liliangel, thank you for your question. We need to get more details about this like if the thermostat shows 'Heat On' on the screen, if the system starts running, if you are getting air coming our of the vents and if it is warm air. The thermostat is a switch that tells the system when to start and stop running based on the inside and set temperatures. If the thermostat shows 'Heat On' steady on the screen and your system starts running that means that the thermostat is working properly and we recommend you contacting your HVAC contractor to check the system. We will be happy to help troubleshooting and discussing where the issue may be at (800) 633-3991 or through Private Message at our Honeywell Home Facebook account. - Maria
A:AnswerHi Vicky, all of your wires will be used. It looks like your system may be a heat pump application with backup heat. If so, Y to Y, C to C, W to W2/ Aux, G to G, R to R, O to W-O/B terminal. -Joey
A:AnswerHi, thank you for your question. This thermostat works with propane systems. To verify the compatibility of this thermostat and your system we need to know how many total wires you have and which terminals are being used on your current thermostat. Feel free to contact our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account, we will be happy to help! - Maria
A:AnswerHi KC, thank you for your question. You will need to replace the wall plate with the one that comes with this thermostat. Make sure to follow the same wiring. If you need further assistance, you can contact our team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Maria
A:AnswerHi, thank you for your question. Please make sure that all wires are firm and secure inside the wiring terminals, reset your circuit breakers and make sure that there is no open door/panel at the furnace/air handler, specially if you recently replaced the filter. If you have already verified this and the situation persists, the thermostat might not be receiving power from your HVAC system. Check the AC voltage between the R and C wires on the thermostat side. The voltage should be between 20-30 VAC. If the voltage is not within that range, please contact your HVAC contractor to take a look at that. If the voltage is fine you will have to replace the thermostat, this model has 1 year of warranty through the place of purchase. - Maria
A:AnswerHi Mike, this is not what you should expect. Please check the AC voltage between the R and C wires on the thermostat side. The thermostat requires constant 20-30 V to operate properly. If the voltage is not within that range please contact your HVAC contractor to have them take a look at your HVAC system. For further assistance, you can contact our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Maria
A:AnswerHi tearza, thank you for your question. We will be happy to help you wiring your new unit. We need to know what type of system you have and to see the full wiring configuration, which wire was going to which terminal on the old thermostat. Feel free to contact our tech support team at (800) 633-3991 or via Private Message at our Honeywell Home Facebook account. - Maria
