Daikin R71FUV1 Service Manual page 82

Troubleshooting by Remote Controller
Error code
L8 - 01 Electronic thermal 1 error
L8 - 02 Electronic thermal 2 error
L8 - 03 Drop in compressor
revolutions
L8 - 04 Thunder detection error
L8 - 05 Inverter limiting current
L9 - 01 Stall prevention (current
increase)
Description of error
Troubleshooting
Description of diagnosis
Overload current continues
for a period of 260 seconds or
more.
This error is supposed to
have resulted from excessive
charging of refrigerant,
damage caused to the
compressor bearing, too high
pressure, etc.. Check and
probe the cause.
Overload current close to the
locked current flowed in the
thermal for a period of 5
seconds. This error is
supposed to have resulted
from closed stop valve,
disconnected wire in the
compressor motor, etc.
Check and probe the cause.
Compressor load has been
increased after startup. This
error is supposed to have
resulted from instantaneous
power failure, liquid back, etc.
Check and probe the cause.
Surges caused by thunder
Excessive limiting current is
flowing in the inverter. This
error is supposed to have
resulted from failure to open
the stop valve, excessive
charging of refrigerant,
clogging in the indoor unit
filter stain in the indoor/
outdoor unit heat exchanger
etc.. Check and probe the
cause.
Overload current has been
applied to start up the
compressor.
This error is supposed to
have resulted from high
startup differential pressure,
liquid back, excessive
compressor oil, abnormal
compressor coil, seizure of
the compressor shaft, etc.
Check and probe the cause.
Si20-701_B
75