Outside Central Air Unit Will Not Turn Off

Fried contactor getting stuck not releasing.

Outside central air unit will not turn off. If the high pressure lines from the condenser to the furnace or the evaporator coil in the top of the furnace are iced up then shut the system down. Either turn off the breaker in the panel or pull the disconnect switch outside at the condenser. If it does the problem is not likely the thermostat. Your system is probably low on freon and needs to be recharged.

If the unit continues to run it may be the thermostat. Wait to see if the air conditioning unit fan eventually shuts off. If you do not have a reset switch you can turn off your air conditioner at the thermostat and wait for 5 minutes before turning it back on. To turn the blower fan off simply set your thermostat to the auto option.

Turn the thermostat up to a temperature at or near the outside temperature. Air conditioner outside unit fan not working. The unit freezes up. Make sure it s in the on position as someone might have accidentally left it in the off position.

You may find that there s a metal box hanging on the wall near the outside unit. If it is faulty it may not tell your air conditioning system to turn off when it should. The thermostat reaches the desired temperature the indoor unit shuts off the air stops blowing but the outdoor unit keeps on running. An ac compressor that won t turn on.

If your central air conditioner will not turn on try to troubleshoot the problem yourself before calling a serviceman out to your home. Unfortunately they can be expensive to repair when something goes wrong. Within this box is a shut off or emergency switch. Thermistor the thermistor is what detects the indoor temperature of your home.

If you re lucky enough to have a unit with a reset switch located near the outside unit all you need to do is simply press the switch. In the heating mode if it s a heat pump it could eventually shut off on a high pressure safety device. Main control your air conditioning system has a control board in it that provides the power to the compressor and the fan motors. This is an issue that you ll want to solve as soon as possible to avoid unnecessary energy consumption not to mention damage to your system.

An outdoor air conditioner that won t shut off can occur on central air conditioning systems or on heat pumps when in cooling mode. Outdoor unit won t shut off unless i use the circuit breaker.