Panasonic E3 - Page 238

5-13
5
F12 Compressor inlet Suction Temperature Sensor (TS) Trouble
Error Detection Method
Error Diagnosis
It is judged an error when open circuit or short circuit.
1.
2.
Sensor connector is connected to PC board properly.1-1
1-2
Reconnect and check
Yes
No
1
Sensor
2 Outdoor
control
PC board
Replace PC board because of outdoor control PC board failure.2-1
Resistance between sockets is infinity or0 ohm.1-2
Replace sensor
2-1
Yes
No
F31 Outdoor Unit Nonvolatile Memory (EEPROM) Trouble
Error Detection Method
Error Diagnosis
It is judged an error based on the criteria listed below.
When power initially turned ON for the first time, nonvolatile memory (EEPROM) is not installed.
Read values after writing onto nonvolatile memory (EEPROM) is inconsistent.
•
•
1.
2.
Does EEPROM exist on the control PC board?1-1
1-2
Install EEPROM
Yes
No
1
PC board
Incorrect EEPROM
Replace with correct EEPROM.
1-3
Is EEPROM installed properly?
(Check: Bent IC Pin or incorrect installation, etc.)
1-2
1-3
Correct
Yes
No
Check power supply
1-3
Extreme voltage fluctuations
Not satisfied with
+
10% rated supply voltage1-1
1-2
Extreme distortion of voltage waveform1-3
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
21.5A16.5A
18.5A15.5A
(for 3-phase outdoor Unit PCB)
ACXA73-3030* (U-200PZH2E8)
(for 3-phase outdoor Unit PCB)
ACXA73-3028* (U-250PZH2E8)
FUSE2
FUSE3
SM830281-00_欧州向け R32シングル TD＆SM.indb 13 20/01/09 15:05:16