74
5201
Display
Meaning and detecting method
Causes
Check points
Pressure sensor (63HS) abnormality
When detected pressure in high-pressure
pressure sensor is 1MPa or less during the
operation, the compressor stops and
restarts operation in 3minutes.
1) High-pressure pressure sensor
failure
Check the high-pressure pressure
sensor.
When the detected pressure is 1MPa or
less at just before of restarting, the
compressor stops abnormally. In this time,
<5201> is displayed.
2) Internal pressure decrease by gas
leakage
Check the internal pressure.
For 3minutes after the compressor stops,
the unit delays to abnormal stop. Then, the
outdoor unit address No. and check delay
code <1402> blinks alternately on the
4digit digital display.
3) Connector contact failure,
disconnection
Check the high-pressure pressure
sensor.
SW1 setting
4) Multi controller board input circuit
failure
Check the high-pressure pressure
sensor.
For 3minutes after starting compressor,
for defrosting or for 3minutes 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 2units 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 2minutes 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 line is
constructed with the current flowed,
turn off power supply of outdoor unit,
indoor unit and lossnay for 2minutes
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.
1
2
3
4
1
2
1
2
1
5300
Current sensor error (PUMY-125VMA
PUMY-125VMA
1
)
Abnormal if current sensor detects –1.5A to
1.5A during compressor operation.
(This error is ignored in case of SW6-3 ON.)
1. When input current sensor on N.F. circuit
board detects 34A or more, compressor
stops and restarts in 3 minutes.
2. When the sensor detects 34A or more
again (2nd detection) within 10 minutes,
since the compressor has stopped, the
compressor stops again and restarts
operation in 3 minutes.
3. When the sensor detects 34A or more
again (10th detection) within 10 minutes,
it stops abnormally. In this time <5300>
error is displayed.
4. It is being delay for abnormal stop during
10 minutes since the compressor has
stopped. In this time, check delay code
<5350> will be displayed.
1) Disconnection of compressor wiring
2) Defective circuit of current sensor on
outdoor power board
3) Low voltage supplied to power
supply terminal block.
Correct the wiring (U•V•W phase) to
compressor.
Replace outdoor power board.
Check the facility of power supply.
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2
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2
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on
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