An improperly wired thermostat can lead to fried electronic components, which will stop the heat pump … must trip breaker & reset breaker.only dose this when out side air is above 40 degrees. Typically, heat pumps have cooling operating temperature range of 15°F to 115°F (-10°C to 46°C). Now the emergency heat is not working properly. Please disregard. That is, all of the same controls and components are involved. Can you advise the problem? As the weather in Raleigh starts dipping down, the heat not working in your home is sure to get your attention. WHY IS THE FAN ON MY HEAT PUMP NOT RUNNING? Your heat pump may also have old or worn-out wiring that needs to be repaired or tightened by a Trane Comfort Specialist™. For economy, as Carson Dunlop Associates' sketch shows, electric furnaces often use a gang of electric heating elements that are turned on in stages rather than all at once. Check for a tripped breaker to start. When the emergency heat is on now, it makes the house smell like its on fire, it is much louder than it used to be, and it doesn't put out heat. Make sure your thermostat is set to heat. Having Emergency Heat on can and will be more expensive to run. Since the failure of the heat pump's backup heat to turn on, loss of heating capacity, reduced air conditioning output temperatures, loss of cool air supply, looking at wiring diagram from the unit e lug should go right to the air handler in parallel is white wire to outside unit with an optional outdoor thermostat which I'm not sure is in the wiring. Step 2 Press the fan button to see if the fan will turn on and off. Unfortunately, in extremely cold weather, even a properly working heat pump does not reach temperature set on thermostat. The emergency heat setting on your programmable thermostat engages your alternative or supporting heat source when a problem occurs with your heat pump. The emergency heat setting is a third-level backup heat source that kicks in when your heat pump can’t draw in outdoor air and heat it (like it typically does) or rely on the secondary heat source, which is usually electric heat or a furnace. It is (Jan 24, 2015) Anonymous said:I have an electric heat pump for AC and Heating of the home. Scenario 1 – Cool Air Blowing from Registers. Can you advise the problem? This heat pump outdoor unit has a In cooling mode where a heat pump is installed, the indoor evaporator coil is cooled in order to cool air blown across it. What could be wrong? What might be the problem? If the airflow to your unit is blocked by snow, ice, leaves or another type of debris, … There should also be Emergency heat type and Emergency heat source listed under "System details." the heat pump works in warmer weather (>35 degrees), and will keep the house heated to the set temp, but it won't switch over to aux heat (gas heat) in cold weather. Troubleshooting when a heat pump is not defrosting. **Note that if your Emergency Heat light is on but your thermostat is NOT set to Emergency Heat, this is an indicator there’s a problem with your heat pump and you should call for advice and service. But when a period of extreme cold strikes, the furnace may not be able to keep up. After several minutes the auxiliary heat kicks in even when temps are moderate 30 degrees and above. Pilot Light or Igniter Isn’t Working . If a Lennox heat pump is not working properly, reset the system before contacting technical support. A heat pump’s emergency setting should only be used when your heat pump stops working properly. 24/7 Emergency Service. Afterward, you can switch back to the normal setting. The drain clog will have to be removed, or the furnace’s pump will have to be replaced before it can start working again. Some of the critical controls that have to work in order for the heat pump to heat at all in cool weather, or to switch to backup heat mode include: The indoor thermostat - see THERMOSTATS, the outdoor temperature sensor When the temperature in the house drops approximately 2 degrees below the room temperature, supplemental heat comes on to assist … Heat pump compressor is down, will emergency heat work? It could be a bad fuse or you might have flipped a breaker. For photographs of other air conditioning and heat pump parts, and for an explanation of where these air conditioning components are physically located, See A/C COMPONENTS which discusses and describes how to identify the indoor and outdoor components of an air conditioner or heat pump system. Therefore, when you run the furnace in the winter, the outside unit should not run as it only functions as part of your air conditioning system. 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