Daikin ZQG71~140L7V1B Service Manual page 114

Field Setting from Outdoor Unit PCB
Outdoor unit:
Error code
E7 - 01 Fan motor lock
L1 - 01 Instantaneous overcurrent error (while in
startup operation)
L1 - 02 Current sensor error in PC board
L1 - 03 Current offset error
L1 - 04 IGBT error
L1 - 05 Jumper setting error
L1 - 06 SP/MP-PAM overvoltage error
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)
L9 - 02 Stall prevention (startup error)
LC - 01 Faulty wiring
LC - 02 Faulty transmission between compressor and
micro controller
PJ - 01 Capacity setting not made
PJ - 04 Faulty capacity setting
102
Description of error
Troubleshooting
Description of diagnosis
The fan motor has caused abnormal rotation. Check for the
connection of the connector between the fan motor and the
outdoor unit PC board. If the connection is normal, replace the
fan motor. If this still cannot solve the error, replace the
outdoor unit PC board.
L1
Refer to the " " flow chart of each manual and make a
diagnosis of the relevant unit based on the Error code shown
to the left.
Overload current continues for a period of 280 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 five 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.
The compressor has not completed startup operation. 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,
faulty position detection circuit, etc. Check and probe the
cause.
Faulty transmission including that caused when the power
supply turns ON. This error is supposed to have resulted from
defective wire connections around the PC board, faulty
outdoor unit PC board, or faulty fan motor. Check and probe
the cause.
There is an error in transmission between the compressor and
the outdoor unit PC board. If the wire connections of the
compressor are normal, check for the same of the outdoor unit
PC board.
This is an outdoor unit PC board for repair, but has no capacity
setting adapter connected. Connect a correct capacity setting
adapter to the PC board.
This error results from a mismatch of signals between the
controller in the PC board and the inverter. Check whether the
type of the PC board is correct and correct capacity setting
adapter is connected.
ESIE12-06
Field Setting