If you haven’t been able to find a basic cause for the heat pump not switching to cooling mode, call for an Ankeny, IA, HVAC contractor to come to your house and find out what’s wrong. If there is not enough air blowing out of the vents, check your air filter. Check power sources to ensure the heat pump is powered. For example, if your heat pump is working in the heat mode but is not in cooling mode, you might have a bad reversing valve. This will help keep pressure off your ducts and keep airflow efficient around your home. Next, check your outdoor unit is not iced over (see Heat Pump Troubleshooting Problem #1). If there is no airflow, check the air handler. You may also want to check your condenser and fins as well. For air filters, you can either clean or replace them, depending on specifications. The indoor coil in the air handler gets cold when the heat pump is in cool mode. Perhaps relatives were visiting, and someone mistook the wall switch for a light switch. To keep your Rheem heat pump in good working condition, you should check the air filters every month, keep the outdoor coils clean, and inspect the blower, filters, ducts, and indoor coil for obstructions and dirt. It might fix the problem. For example, fiberglass filters should be replaced every month, while electrostatic filters can be washed every 3 months. A heat pump’s refrigerant is another crucial part of its system. If your heat pump ISN'T reaching your set … Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". There are measures you can do on your own. Heat pumps are generally used with a supplemental power source to ensure that heating and cooling requirements are satisfied. Some of the reasons are the low air pressure or low volume of cold air through the vents. This simplest possible solution is always the best to try first. Is there air blowing out of the vent? Check that electricity is on for the equipment. If that is set correctly, go outside and…. You can do the following for this situation: However, if none of these tips seem to be working, something else might need fixing. Get a technician to come out and find the problem, No power to the air conditioner (check your circuit breaker or fuse panel), Problem with wiring somewhere between thermostat and outdoor unit. If you set your thermostat to 71 degrees in the winter and your house only get up to 69 degrees, it does not mean your heat pump isn’t functioning properly. If you set the thermostat to cool, and still nothing happens, it might be not responsive, not calibrated, or malfunctioning. You can use rags or soft brushes for parts that are hard to reach. The first thing to check when you face a heat pump not heating or a heat pump not cooling is to check the thermostat settings. These switches are typically not on heat pumps as a heat pump liking has a breaker next to the heat pump. You might also want to check your ductwork too. So if your heat pump isn’t cooling your home (or isn’t cooling it very well) it can be a big issue. A heat pump is a device that transfers heat energy from a source of heat to what is called a thermal reservoir.Heat pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one.A heat pump uses external power to accomplish the work of transferring energy from the heat source to the heat sink. If your home is heated by a furnace instead of a heat pump, please see Furnace Troubleshooting & Repairs. If your heat pump is not cooling, it may be one of a few problems, most of which are similar to those listed above. The air filter needs to be cleaned if dirty or replaced. One is that the thermostat isn’t communicating with the heat pump to turn it to cooling mode. We’ll start with problems that can be fixed by yourself, to issues that require professional help and regular maintenance. There are a variety of reasons your heat pump may not be cooling your home properly, and some of them have fairly easy (and cheap) fixes. Another common reason for a heat pump stuck in one mode is the reversing valve is broken. Check the airflow in the vents. First of all, just check and make sure your unit was not accidentally switched to a/c mode. See our response to recent issues regarding COVID-19. Keep the vents open. Thermostat problems: First check to see that your thermostat is set to cool. Check your circuit breakers or fuses if your unit isn’t running while switched on. A heat pump may also not be cooling because its indoor coil got iced. You need to regularly check on the ducts to make sure the air is distributed efficiently. Get a technician to come out and find the problem. If the thermostat is not set to "cool" it is simply turning off your A/C. Heat Pump Troubleshooting Problem #3: BLOWING COLD IN HEAT MODE. Your room might not cool down even with a working heat pump due to insulation leaks. When a heat pump thermostat is wired improperly, it fries electric components causing the heat pump not to run at all. When this happens, the unit will enter a defrost cycle. A heat pump not blowing cold air during summer is also a common issue for many. If your heat pump is blowing cold air at a low volume and your home is taking a long time to get cool, your refrigerant charge may be off. If the unit seems to be fine, check if your outdoor unit has a reset button and press it. Set the thermostat to cool mode, a few degrees below your room’s temperature, so the thermostat calls for cooling. The system runs on 220/240 Volts, and both indoor and outdoor units’ breakers have to be checked. It will be more susceptible to freezing if condensation comes into contact with it. But when in doubt, don’t forget to contact your local HVAC service for proper maintenance. Check breakers at the home’s electrical panel – make sure the breakers powering heat pump indoor and outdoor equipment are properly set. Because many heat pumps can lose efficiency as outdoor temperatures fall below freezing, your system probably has a supplemental heat source – either electric resistance heating elements, or a gas or oil furnace. The fans in the outdoor unit must also run in order to draw the outside air across the coils where the refrigerant absorbs its heat through evaporation and then takes it indoors. The valves ensure that the refrigerant flows in the proper direction, and there are several of them: thermal expansion valve, reversing valve, and flow control valves. The inverse happens if you want it to cool and you’re getting warm air. If it is, move on to step 3. That is another easy fix. Learn how to install a window heat pump safely and simply, using DIY tips. If you feel the temperature in your house is getting higher, it may be because of heat pump fan not spinning, and therefore, heat pump not cooling. A heat pump not only heats your home during the winter, it also cools it during the summer. Heat pump units - In HEAT mode, a timed delay keeps indoor fan off for two minutes to prevent unheated air from being circulated by the indoor fan. It does it automatically by reversing the refrigerant flow. However, if your thermostat is still new and is set correctly, it is a good time to check your heat pump or call a technician. Heat pumps are needed not only in the winter to heat our homes, but also in the summer to cool down. There are reasons why your heat pump does not reach temperature set on your thermostat. Here is the list of the most common reasons for air conditioning issues of your heat pump: Before you try to fix the heat pump, always check the thermostat first. We can help. It will be more susceptible to freezing if condensation comes into contact with it. This is another item you can add to your heat pump maintenance checklist. The condensation occurs from your unit dehumidifying your home. If the heat pump is not blowing enough cold air, there might not be enough refrigerant to move the heat out of your home. This might be another reason your heat pump is not cooling your home. Alternatively, it might be the case that your thermostat was wired incorrectly. The heat pump functions on the same principle as refrigerators and air conditioners: A liquid absorbs heat as it turns into a gas and releases heat as it returns to a liquid state. Ideally, you should only check the valves if everything else is working fine. All rights reserved. Start with the thermostat. Consequently, the fixes for this are also ways to troubleshoot a heat pump in winter. Things to consider, don't and dos. After checking your thermostat that is working fine, check your outdoor unit next. This could be a connection failure, or the thermostat may be misreading the temperature. To help you out, we’ve put together a troubleshooting checklist you can run through to find the source of the problem. Put your hand over a vent. Leaks or cracks in the ducts might keep the cold from efficiently cooling your home. At this point, you need to replace your thermostat. In this case, it’s best to call the local technician. Fortunately, these are also reasons for your common winter problems with heat pumps. Your heat pump not shutting off in winter (for a longer time) is nothing to worry about. Copyright © 2021-2022. This is the key difference between a heat pump and a standard air conditioner. Some heat pumps can defrost the indoor coils by drawing in heat from the outside. There are ways to keep your home cool and lessen your heat pump’s workload. 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