Panasonic U-10ME2E8 - Page 179

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2WAY SYSTEM
Trouble Diagnosis
6
3. 2WAY Alarm Codes
2WAY SYSTEM
Trouble Diagnosis
P19, P29 Alarm
Alarm code P19, P29
Alarm meaning P19 : Compressor 2 start failure (compressor lock, compressor wiring open phase, DCCT failure)
P29 : Compressor 1 start failure (compressor lock, compressor wiring open phase, DCCT failure)
Alarm conditions This alarm may occur at start, and occurs when open phase or lock is detected, and when a
DCCT failure occurs.
Probable cause (1) Power supply voltage malfunction
(2) Wiring failure (missing, connection failure, miswiring)
* Wiring between the HIC PCB and compressor
Check (1) Check the power supply and voltage.
Check whether the voltage between each of the phases is correct while the compressor is
running.
(It is necessary to check the compressor while running because the voltage may decrease
when the compressor starts running.)
(2) Check the wiring.
Check whether the following wiring is missing, connection failure or miswiring (position of U, V,
W is properly placed).
• Wiring between the HIC PCB and compressor
• HIC PCB side
• Compressor side
Correction (1) Correct the power supply voltage.
(2) Correct the wiring.
(3) Replace the HIC PCB.
(4) Replace the compressor.
Example —
SM830253-00_欧州2way7_SM-TRSM.indb 25 16/08/02 14:02:52