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5-15
5
Check power supply
1-3
Extreme voltage fluctuations
Not satisfied with +10% rated supply voltage
1-1
1-2
Extreme distortion of voltage waveform
1-3
Instantaneous blackout may sometimes occur.
1-4
Check power supply
1-2
Check power supply
1-4
Check power supply
2-1
Yes
Yes
Yes
Yes
No
No
No
No
1 Power
supply*
H01 Primary (input) Overcurrent Detected
Error Detection Method
Error Diagnosis
Primary current effective value detected overcurrent (trip current value).
•
1.
2.
2
2-3
2-2
Loose electrical wire connection
2-1
Correct wiring
2-3
Has FUSE2 / FUSE3 blown?
Check the electrical conduction with tester.
2-2
Yes
Yes
No
No
Replace CR board.
2-3
CN-TD
FUSE3
FUSE2
PC board
wiring
Check not only in the outdoor unit stop mode but in the drive mode.
*
Trip current value
3-phase model
HP = horse power
Heating
Cooling
8 HP
10 HP
21.5A
16.5A
18.5A
15.5A
(for 3-phase outdoor Unit PCB)
ACXA73-3030* (U-200PZH2E8)
(for 3-phase outdoor Unit PCB)
ACXA73-3028* (U-250PZH2E8)
FUSE2
FUSE3
Turn the power on again and run the outdoor unit.
Is alarm occurred after operation?
1-1
Replace CR board.
See what happens.
Yes
No
1 Check the
control
PC board
H03 Primary Current CT Sensor (current sensor) Failure
Error Detection Method
Error Diagnosis
If 18A or greater is detected when the compressor is stopped (alarm triggered even if the connector is unplugged).
•
If no current is detected even though a compressor is running.
•
1.
2.
It is judged an error based on the criteria listed below.
H05 Sensor Failure, Compressor Discharge Temperature Sensor (TD) Disconnected
Error Detection Method
(In case of outdoor temperature over 5°C) For 10 minutes since started, variation of discharge temperature is always
detected within 2°C comparing with the temperature just before starting.
1.
•
(In case of outdoor temperature less than 5°C) For 30 minutes since started, variation of discharge temperature is
always detected within 2°C comparing with the temperature just before starting.
•
1-1
1-2
Reinstall correctly.
Yes
No
1 Sensor
Trouble
Replace the sensor with a new one.
1-2
Is the sensor properly installed at the holder side?
SM830276-00_欧州向け R32シングル TD&SM.indb 15
19/02/28 13:29:30
Содержание S-50PU2E5B
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