Ductless Mini-Split Troubleshooting Guide

888 718-8448
Ductless Troubleshooting Guide

Ductless Mini-Split Troubleshooting Guide

If your ductless mini split air conditioner does not work properly, first check the following points before requesting service:

TroublePossible CauseRemedy
Air conditioner does not run at all.
  1. Power failure.
  2. Leakage circuit breaker tripped.
  3. Line voltage is too low.
  4. Batteries in remote control unit.
  1. Restore power.
  2. Contact us at 888 718-8448.
  3. Consult your electrician or dealer.
  4. Replace batteries.
OPERATION lamp blinks and air conditioner does not operate. Trouble in system. Contact us at 888 718-8448.
Compressor runs but soon stops. Obstruction in front of condenser coil. Remove obstruction.
Poor cooling (or heating) performance.
  1. Dirty or clogged air filter.
  2. Heat source or many people in room.
  3. Doors or windows are open.
  4. Obstacle near air intake or air discharge port.
  5. Thermostat is set too high for cooling (or too low for heating).
  6. Outdoor temperature is too low for heating.
  1. Clean air filter to improve airflow.
  2. Eliminate heat source if possible.
  3. Shut them to keep the heat (or cold) out.
  4. Remove it to ensure good airflow.
  5. Set the temperature lower (or higher).
  6. Contact us at 888 718-8448 or try to use another heat appliance.
Clicking sound is heard from the air conditioner. In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.
OPERATION lamp lights but outdoor unit will not run. The use of cellular phones near the air conditioner may cause disturbance to its normal operation. Turn off the power then restart the air conditioner after a while. I this does not help contact us at 888 718-8448.

If it still does not work properly, contact us at 888 718-8448.


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  • "Thanks for the great job!"

    Thanks for the great job and for being meticulous throughout with everything!

    Ira S., Little Neck, NY

  • "Richair Comfort Solutions were very professional and knowledgeable..."

    I contacted several companies for an estimate to install new ductless air conditioning system. I found Richair Comfort Solutions; they were very professional and knowledgeable. Their product specialist spent a lot of time explaining the differences in ductless systems available today. I took their advice and I am really happy with my new ductless system.

    Mark, Fort Lee, NJ 07024

  • "This company is very honest, fair and professional..."

    I am more than satisfied with Richair Comfort Solutions' workmanship and business practices. This company is very honest, fair and professional. They work clean and answered all our questions clearly and effectively. Highly recommend to all!

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    New York, NY