Caution: Do not run a heat pump or air conditioner without the fan working. One purpose of the fan is to cool the compressor. With the heat pump fan not working, the compressor can overheat and be damaged – and that will increase your repair bill by $1,250 to $2,000 plus. If that happens, your heat pump might be “totaled.” Solution: Most mini-split heat pumps have an indicator that will alert you when aux heat is engaged. If the indicator remains off even in extremely cold weather, you may want to call an HVAC technician. 7. The compressor has failed. The compressor is arguably the most important part of the mini split during heating. Solution: First, check that the temperature setting is set correctly. Make sure the thermostat is not in “heat” mode and is set to “cool” mode. Also, check the temperature setting to ensure it is below 67 degrees. If your Mitsubishi thermostat is in a 2-wire setup, it can only control heating and cooling individually. A full drain pan can cause a musty smell. If a house smells musty, but there’s no mold, you may want to check if you have a full drain pan. A pan filled with water can indicate a clogged Mitsubishi Mini-Split Thermostat will not set below 67 degrees. Thermostat on my ducted mini split does not seem to let you set the cooling below 67 degrees. I checked the special settings that sets the minimum temperature and it is set at 50 degrees. Not sure why the remote thermostat does not allow you to set the temperature below 67 degrees. The sun symbol on a Mitsubishi thermostat represents the heating mode. It typically resembles a small sun icon. When you select the heating mode and set a desired temperature, the thermostat will activate the heating system to warm your space. The sun symbol is used to indicate that the thermostat is controlling the heating function and working To solve the problem, try these 2 things: Turn off the heat at the thermostat and check your air filter. If it’s dirty, change it! Make sure the thermostat is set to “AUTO”, not “ON”. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating. This could make it feel like cool air is coming out of your in the cooling mode. • Heat: Remote controller controls only in the heating mode. • Drying: Remote controller directs indoor unit to remove moisture out of the air. May result in temperatures below your cool setting. • Auto: Remote controller automatically selects heating or cooling depending on the indoor temperature. • Off: Indoor 1.Refrigerant leakage in split AC. Leakages are one of the most common split AC problems. The refrigerant (AC gas, as commonly known) is main contributor to the cooling of the air. If the split AC is not cooling properly, most probably the refrigerant level is low. Since the refrigerant is stored at very high pressure, all the curves and joints MymQp.

mitsubishi air conditioner heat mode not working