Trouble Diagnosis

4. Blinking (Inspection) Display on the Remote Controller

CAUTION

Currently the blinking inspection display can be displayed only on the wired remote controller and system remote controller.

1

2

3

4

5

6

7

8

Blinking inspection display (1) (Automatic backup)

Alarm code

(Blinking

inspection display)

 

 

Alarm meaning

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 (2)

 

(compressor magnet SW seizing detection).”

Alarm conditions

When alarm P16, P22, P26, P29, Hx1, Hx2, or H31 has occurred, correcting the control device

 

(remote controller, etc.) input engages this mode.

 

 

Probable cause

Because alarm P16, P22, P26, P29, Hx1, Hx2, or H31 has occurred, check the alarm history

 

then refer to the corresponding items.

 

 

Correction

Follow the instructions in the corresponding items to correct the trouble.

 

 

Recovery

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.

Notes

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. Howeve r, 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.

 

 

 

3-22

Page 84
Image 84
Sanyo AHX1252, UHX2452, UHX0752 Blinking inspection display 1 Automatic backup, Alarm code Blinking Inspection display