58 PB
TROUBLESHOOTING
Diagnostic Codes
Outdoor Unit When The Compressor Is In Operation
THE FLASH IS 1 SECOND
No. LED1 LED2 LED3 Reasons for the current operating frequency of
the compressor is limited
1 BLINK BLINK BLINK Normal frequency rising and decreasing, no
limitation
2 OFF OFF ON Frequency decreasing or prohibition of
frequency rising caused by over‑current
3 OFF ON ON Frequency decreasing or prohibition of
frequency rising caused by anti‑freezing of
refrigeration or anti‑overload in heating
4 ON OFF ON Frequency decreasing or prohibition
of frequency rising caused by too high
compressor discharge temperature
5 Limit to the max operating frequency caused
by too low power voltage
6 ON ON ON Operation at xed frequency (in the case of
capability measuring or compulsory operation
at xed frequency)
7 BLINK OFF OFF Protective frequency decreasing against
outdoor overload (overpower, over frequency
conversion rate, over torque, detection of DC
under‑voltage)
8 ON OFF OFF Frequency decreasing caused by indoor and
outdoor communication fault
9 OFF ON BLINK Frequency decreasing or prohibition of
frequency rising protection against overload of
outdoor coiled pipe
10 OFF ON OFF Frequency decreasing or prohibition of
frequency rising for power‑saving when it
is being used simultaneously with other
appliances
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