Insufficient
refrigerant
(gas leakage)
Clogged capillary
tube or strainer
Short circuit in the
indoor unit
Heat radiation
deficiency
of the outdoor unit
Inefficient
compression
• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is
started.
14.2 Breakdown Self Diagnosis Function
14.2.1 About Self Diagnosis
When the air-conditioner is stopped due to malfunction detected by itself, the operation can be restarted using AUTO
Switch on the indoor unit. In forced operation, the frequency for compressor and fan speed can not be changed and
the signal receiving sound is different.
Normal Operation ON: “pep”
Forced Operation ON: “pep”, “pep”, “pep”, “pep”
Stop: “pep”
Note: Refer to the Diagnosis Code Table for the malfunction when forced operation is not available.
14.2.2 Display of Error Code
1. Keeping the CHECK button on the remote controller depressed for 5 seconds, error code ranging from H11 to H99
can be displayed on the remote controller.
2. The error code is changed and diagnosis signal is transmitted to the indoor unit by pressing the Temp Up button
on the remote control.
3. When the malfunction of the air-conditioner matches the error code on the remote control, four beeps can be heard
from the indoor unit and the operation indicator will light up.
4. Keep the CHECK button depressed continuously for 5 seconds to cancel the diagnosis function.
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