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Common Failures: Troubleshooting and Diagnosis
Non-failure Phenomena
1. When you start up or shut down the solar heat pump, you may hear gurgling sound. This is the noise made
when refrigerant flows through the coil, and is not a malfunction.
2. The solar heat pump does not immediately restart after being shut down and turned back on. The unit is
programmed to wait 3 minutes before restarting. During this time the compressor will not run in cooling,
dehumidifying and heating modes.
4. On occasion, the solar air conditioner will filter out contaminants that have an unpleasant smell. If you run the
system and air blown by the Indoor unit has an odor, the filters require cleaning.
5. While heating, the Indoor unit and the Outdoor unit may stop simultaneously, but the compressor continues to
run. This indicates the unit is defrosting. The unit will continue heating after defrosting has completed.
6. When system is heating, the Outdoor unit may generate condensation. This is a result of defrosting and
thawing, and is not a malfunction.
7. After the solar heat pump is used in the automatic mode, starts or stops, the air conditioner may beep. This is a
result of self-balanced pressure, and is not a malfunction.
Tips for Saving Energy:
Never block the air inlet or outlet of the solar air conditioner. The air conditioner will not run normally and can be
damaged if the inlets or outlets are obstructed.
When cooling, avoid direct sun light in the room you are cooling. Please close the blinds or curtains.
If the wall and ceiling of the room is heated in direct sunlight, it will take longer to cool or heat the room.
Keep the air filters clean. Clogged filters will greatly reduce the efficiency of the air conditioner.
Keep windows, doors and any openings closed, to avoid cool air loss.
Failure Display Status List
Indoor Temperature Sensor malfunction
Indoor Coiler Transmitter malfunction
Freon leak or compressor malfunction
Issue with indoor fan motor
If any of the above malfunctions occur, please contact your HVAC technician or distributor.
YMGI: Your Modern Green Idea
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YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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