I have an ecobee 3 I just installed and is blowing hot air when set to AC. Press Menu on the main screen. I have a carrier 5 ton heat pump. Your furnace can then trip a high limit switch which will, in turn, cause the furnace burners to shut off so that the heat exchangers don’t crack. The brand new Ecobee thermostat was somehow set to 81 degrees and climbing with no end in sight even though it was still set to 70 degrees. Back on … You can have your ecobee Smart Thermostat switch from heat to cool or from cool to heat automatically without having to do it manually. Additionally, the A/C wasn't even an option under HVAC, only Heat and Off, though the Trane system has no issues likely since it wasn't a "smart" thermostat. To Set Thermostat to Auto Mode. My furnace is a Trane XL80 and my heat pump is a Trane XE1000 Weatheron. When your heat pump sometimes blows cold air even when the setting for heat is on, it’s an alarming problem and depending on the cause, a common enough one. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. My AC will not blow cool air. This time of year, especially when it gets cold outside in the evenings, we get many calls from homeowners concerned that there is cold air blowing out of the duct registers in their home when their heat is running. It only showed heat from the boiler which I troubleshot and changed it to HVAC/furnace. I have a York two stage AFUE 96% furnace, installed 9 years ago (model TM9T060-12). I immediately contacted Ecobee technical support and told them what was going on. How to minimize the use of auxiliary heat with a heat-pump on your ecobee thermostat Question: We have a heat pump and recently installed the ecobee 3. This morning neither the burners or the blower wou … There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. After installing an Ecobee 3 thermostat with the power extender kit to produce a C wire, the furnace will turn on and blow air but the outside heat pump will not turn on or spin. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat. Two Reasons Your Heat Pump Is Blowing Cold Air. Last night the it seemed to be running, but was blowing cold air. ... otherwise the thermostat will lock out the heatpump and change over to aux heat as the weather outside will be too cold to run the heatpump unit that's sitting outside. I believe they were just replaced (we just - Answered by a verified HVAC Technician ... its only blowing air, not cold air. I have Red - Rc Green - G Yellow - Y1 Blue - O/B Added wire - White - Common White - W1. This is plenty warm to heat your home to your desired 72°F. Set the HVAC to Auto. Color wires are weird due to swapping from conventional to heat pump. Then select HVAC. 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