Buy Mysa Smart Thermostat for Mini-Split Heat Pumps and AC | for Ductless Heat Pumps, Window Units or Portable Air Conditioners, Control Remotely with Smartphone or Tablet, Energy Saving, Easy Setup: Heating, Cooling & Air Quality - Amazon.com FREE DELIVERY possible on eligible purchases The warranty period for the Mitsubishi Electric Air Conditioner is twelve (12) months (and sixty (60) months for the compressor) from the purchase date as indicated in the Proof of Purchase (e.g. sales invoice, sales receipts, delivery order, etc.). Turning on Mini-split From Standby Mode. Using a remote control device hold down cancel button followed by menu button to turn off operation indicator light.Then press ON/OFF or MODE buttons again to start it up after 15-20 minutes. Delay allows compressor pressure equalization taking place avoiding any damage. When the thermostat light (Emergency Heat Light) is flashing or on during normal operation (whether in the cooling or the heating mode, but not the Emergency Heat mode), this usually indicates that the outdoor unit is "locked-out". This means the outdoor unit has shut itself off because of a problem, and it sends a signal to the thermostat
2. Find a Mitsubishi factory-endorsed contractor and place a service call. Repairing a Mitsubishi mini-split heat pump isn’t the same as repairing a typical ducted heating and air conditioning system. You need to find a contractor with a working knowledge of the equipment and the components involved.
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mitsubishi electric air conditioner heat mode not working