Blinking Inspection Display - Panasonic U-8MF2E8 Service Manual

5. Blinking Inspection Display

CAUTION
Blinking inspection display (1) (Automatic backup)
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Correction
Recovery
Notes
5
Currently the blinking inspection display can be displayed only on the wired remote controller
and system remote controller.

(Blinking inspection display)

Automatic backup is in progress. A/C units can be operated.
Status: The compressor at one of the outdoor units where the outdoor unit fan is running should
be operating.
* Blinking inspection display also occurs when seizing of the compressor magnet SW
is detected. Because this may also be the case, refer to "Blinking inspection display
(compressor magnet SW seizing detection)."
When alarm P16, P22, P29, H01, H03, H11, H12 or H31 has occurred, correcting the control
device (remote controller, etc.) input engages this mode.
Because alarm P16, P22, P29, H01, H03, H11, H12 or H31 has occurred, check the alarm
history then refer to the corresponding items.
Follow the instructions in the corresponding items to correct the trouble.
After repairing the malfunctioning locations, reset the power for the system (all outdoor units).
Caution: Automatic backup mode will not be canceled until the power is reset.
Automatic backup mode is not engaged in cases of alarms other than those listed above.
Reasons: • There is no need for automatic backup if recovery is possible by correcting the
remote controller input.
• With alarms for which automatic recovery is possible (such as sensor alarms), the
presence of electrical noise may result in a new alarm. However, it is believed that
this occurs for a comparatively short time only. In these cases, a mode (automatic
backup mode) that limits operation may be engaged.
• Control is not possible when a communications system alarm has occurred.
Automatic backup mode is not engaged in order to avoid causing secondary
damage.
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3WAY SYSTEM
Trouble Diagnosis