![Hitachi Utopia PAS-3HVRG Скачать руководство пользователя страница 48](http://html.mh-extra.com/html/hitachi/utopia-pas-3hvrg/utopia-pas-3hvrg_service-manual_2139454048.webp)
TROUBLESHOOTING
1-45
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.
This alarm code is indicated when the current transformer is abnormal (0A detection) and its state
occurs more than 3 times in 30 minutes.
Condition of Activation: When the frequency of compressor is maintained at 15 to 18Hz after compressor
is started, one of the absolute value of running current at each phase
(Phase U+, Phase U-, Phase V+, Phase V-) is less than 0.5A (including 0.5A).
Alarm
Code
Abnormality of Current Transformer (0A Detection)
*1): P17 is shown at 7-segment on the outdoor unit PCB.
*2): Perform the high voltage discharge work by referring to 1.3.3 before checking and replacing the inverter parts.
Replace Comp.
Restart operation.
No
Faulty ISPM and
replace ISPM. *2)
Compressor stops
immediately. (nearly 18Hz)
Compressor is not
operated.
P17 is appeared. *1)
How is compressor
operation when
restarted?
Is the coil resistance
of comp. normal?
Yes
Yes
Check ISPM.
Replace ISPM
No
Is output of ISPM
correct? *2)
Содержание Utopia PAS-3HVRG
Страница 77: ......
Страница 89: ......
Страница 111: ......
Страница 124: ......
Страница 125: ...01203 4105679 91 01203 4105679 91 0 9 0 9 70 1 ...