Actually, let’s start with what you should NEVER do: use a hard or pointy object to try to chip away the ice! Those fan coils are very delicate and can easily be damaged.Water constantly dripping on the unit from leaky gutters can gradually form a layer of ice on top. If piles of snow have accumulated around the outdoor unit, the impeded air flow can cause more icing. If this is the case, you will probably also have issues with the unit reaching set temperature. If your heat pump system has a slow leak of refrigerant, eventually the charge becomes so low that the system is not producing enough heat to melt the frost. Or the fan itself could be damaged, which impedes the release of heat from the unit and causes ice to accumulate. The fan motor may be failing or completely dead. There could also be a problem with the reverse valve that switches the unit from heat to air conditioning mode. Defrost issues can be caused by faulty relays, controls, or sensors. If the unit is not defrosting, ice can build up in a hurry. Under normal conditions, your heat pump periodically switches to air conditioning mode for a few minutes, which heats up the outdoor coils enough to melt any frost and light ice that has accumulated. Heat pump troubleshooting tips for winter icing: Ice in the coils can damage the sensitive fins, the fan blades, and eventually lead to compressor failure. If you don’t take care of it soon, you could damage the unit beyond repair. All that ice prevents the transfer of heat between the refrigerant and the outside air, and impedes the operation of the heat pump. However, if the top of the unit has a heavy coat of ice, the coils are encased in ice, or the entire unit is covered with a thick sheet of snow and ice, this indicates a problem. Every so often, the unit will go into defrost mode to remove that frost. In the winter, heat pump icing up is often perfectly normal. Heat Pump Troubleshooting Problem #1: ICING UP Heat pump frozen in winterĭuring the cold winter months, your heat pump’s outside unit will sometimes be covered with a coating of frost on the sides, or even light ice.
Here is a list of the most common problems we see with heat pumps, possible causes, and what to do next. In some cases, there are issues you can prevent and problems you can solve on your own when you are aware of the heat pump troubleshooting steps. So how do you begin heat pump troubleshooting? And are there heat pump repair issues you can fix yourself? A heat pump system does operate somewhat differently than a traditional air-cooled air conditioner. If your space has a heat pump system that provides both heating and cooling, it may seem like there are twice as many possible causes when something goes wrong.
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