Arrange an inspection and service if other issues Heat Pump continues to run, without reaching the set temperature 1. This could be coupled with another issue such as a failed defrost cycle to cause the issue.Īction: Inspect thermostat. This disables the primary heat pump source and relies exclusively on the auxiliary heat source. It may be possible the emergency heat setting has been activated on your thermostat. If the heat pump continues to run after the set temperature has been exceeded, it may be circulating cool air to bring it back in line.Īction: Review thermostat settings 7. Some Heat Pumps have an auto-reverse mode which allows the system to automatically switch between Heating and Cooling. Heat Pump Auto-Switching from Heat to Cool to Maintain Temperature If you have the Nest thermostat and are running into batteries issues, you can also get instructions here.Īction: Replace batteries 6.
#If iturn off chemstation will the source cool down how to#
We have a guide on how to replace the batteries here. In this scenario, it is best to replace the batteries. When those batteries run low, there may not be enough power to call the heating system to deactivate. Some thermostats, without a C-Wire, are powered by AA or AAA batteries. The best practice here is to isolate the circuit, remove the faceplate and inspect the wiring to ensure everything is properly connected.Īction: Visually inspect 5. If the message is not getting to the Heat Pump to deactivate on reaching the temperature, it may be down to frayed wiring. Give it a few hours as things move slower when dealing with heat pumps 4. If the auxiliary heat source switches off before the set temperature (plus the threshold) is reached, the heat pump will keep running trying to achieve it.Īction: Reduce the thermostat setting to test if the heat pump turns off at a lower temperature. During this time, the heat pump will constantly run providing as much heat as possible.
It cycles on and off to give the extra boost needed to bring the home up to temperature. That is where the auxiliary heat source kicks in. In this scenario, the heat pump alone may not be able to achieve your set temperature, particularly if it is set high. Where the external temperature is below 30º F (-1º C), there may not be enough heat in the outside air to warm the refrigerant within the heat pump. This is to avoid the system “short-cycling” (frequently turning on and off) which can damage the equipment in the long run. Some thermostats will attempt to overshoot the set temperature by a degree before turning off and also restart after it has dropped a degree below the target. Once the set temperature is reached, it turns off until the temperature drops below the set temperature when it restarts.
Unlike furnaces that pump out high temperatures in short spaces of time, heat pumps generally circulate a warm steady stream of air to gradually increase the temperature of your home.įor that reason, during winter, heat pumps can run for long periods which is completely normal. Set Temperature Threshold Never Reached in Cold Weather If it does not work you may need to replace the blower relay. This would mean the fan would continue to run even though the heat pump has switched off.Īction: Try to turn off the fan at the thermostat. The controller for the blower fan may be malfunctioning resulting in communication from the thermostat not getting through. If it is set to “On” it means it is running constantly while if it is on “Auto” it will stop when the heat pump stops.Īction: It is recommended to set your blower fan setting to “Auto” as it saves money and prevents the fan from overheating. You can check the fan setting on your thermostat.
It may be the blower fan within the air handler that continues to run, sending air through the ducts. It may not be the heat pump that continually runs after the set temperature is reached.
Heat Pump continues to run, after reaching the set temperature 1. At SmartHomePerfected we always advise readers not to undertake any work they are not competent in performing and if in any doubt, it is best to seek the assistance of a professional.
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