Outdoor Unit When The Compressor Is In Operation - Friedrich FPHW091 Service Manual

Diagnostic Codes

Outdoor Unit When The Compressor Is In Operation

THE FLASH IS 1 SECOND
No. LED1
1 BLINK
2 OFF
3 OFF
4 ON
5
6 ON
7 BLINK
8 ON
9 OFF
10 OFF
45
TROUBLESHOOTING
LED2 LED3
BLINK BLINK
OFF ON
ON ON
OFF ON
ON ON
OFF OFF
OFF OFF
ON BLINK
ON OFF
Reasons for the current operating frequency of
the compressor is limited
Normal frequency rising and decreasing, no
limitation
Frequency decreasing or prohibition of
frequency rising caused by over-current
Frequency decreasing or prohibition of
frequency rising caused by anti-freezing of
refrigeration or anti-overload in heating
Frequency decreasing or prohibition
of frequency rising caused by too high
compressor discharge temperature
Limit to the max operating frequency caused
by too low power voltage
Operation at fixed frequency (in the case of
capability measuring or compulsory operation
at fixed frequency)
Protective frequency decreasing against
outdoor overload (overpower, over frequency
conversion rate, over torque, detection of DC
under-voltage)
Frequency decreasing caused by indoor and
outdoor communication fault
Frequency decreasing or prohibition of
frequency rising protection against overload of
outdoor coiled pipe
Frequency decreasing or prohibition of
frequency rising for power-saving when it
is being used simultaneously with other
appliances