52
5201
Display
Abnormal point and detecting method
Causes
Check points
Pressure sensor (63HS)
When detected pressure in high-pressure
sensor is 1 MPa or less during the
operation, the compressor stops and
restarts operation in 3 minutes.
1) High-pressure sensor failure
Check the high-pressure sensor.
When the detected pressure is 1 MPa or
less at just before of restarting, the
compressor stops due to detecting
abnormality. In this time, <5201> is
displayed.
2) Internal pressure decrease by gas
leakage
Check the internal pressure.
3) Connector contact failure,
disconnection
Check the high-pressure sensor.
4) Multi controller board input circuit
failure
Check the high-pressure sensor.
For 3 minutes after starting compressor,
for defrosting or for 3 minutes after recover
of defrosting, abnormality is not
determined as abnormality.
6600
Duplex address error
Detected error when transmission of unit
with the same address is confirmed.
1) There are 2 units or more with the
same address among the outdoor
unit or indoor unit or lossnay
controller, remote controller.
Look for the unit, which is source of
abnormality with the same address.
When the same address is found,
correct the address and turn off power
supply of outdoor unit, indoor unit,
and lossnay for 2 minutes or more as
the same time. Then, turn on power
supply.
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
2) When noise has occurred in the
transmission signal, and the signal
has changed.
Check the transmitted wave and the
noise on the transmission line.
6602
Transmission processor H/W error
'' 1 '' shows on the transmission line though
the transmission processor transmitted '' 0''.
1) When the wiring for either of the
indoor unit, the outdoor unit or
lossnay transmission line is
constructed or polarity is changed
with the power supply turned on,
the transmission waves change in
case that the transmission data
collides mutually. It causes to
detect error.
When the transmission wire is
constructed with the current flowed,
turn off power supply of outdoor unit,
indoor unit and lossnay for 2 minutes
or more as the same time. Then, turn
on power supply.
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
2) Transmission processor circuit
failure
Check the transmitted wave and the
noise on the transmission line.
3) When the transmission data has
changed by the noise.
5300
Current sensor error
Abnormal if current sensor detects –1.5A to
1.5A during compressor operation.
(This error is ignored in case of SW7-1 ON.)
1) Disconnection of compressor wiring
2) Defective circuit of current sensor on
outdoor power circuit board
Correct the wiring (U·V·W phase) to
compressor.
(Outdoor power circuit board).
Replace outdoor power circuit board.
5701
Connection failure of float switch
connector
Abnormal if detected that the float
switch connector is disconnected(open)
during
operation
1) Connection failure of connecor (CN4F)
Check the connection failure of
connector (CN4F) on the indoor
controller
board.
