Hitachi RAC-25WPA RAC25WPA ユーザーズマニュアル
製品コード
RAC25WPA
14-13
14.3.1 SUPPORT FUNCTION OF FAILURE DIAGNOSIS
No.
Function Name
Description
1
Self-diagnosis function
<indicating a failure on
the indoor unit>
<indicating a failure on
the indoor unit>
•
The “timer lamp indicates a mode of failure detected on the indoor or outdoor unit side by
blinking frequency.
blinking frequency.
•
A failure detected on the outdoor unit side will be indicated by the “timer lamp” blinking 4
times after a retry operation has been performed several times.
times after a retry operation has been performed several times.
Note: In some failure modes, only the retry operation is repeated without lamp indication.
<Failure modes that will repeat a retry operation without the indoor unit lamp indication are as
follow :>
follow :>
OH thermistor temperature rise
Outdoor unit communication error.
Power voltage abnormal
Less frequent defects.
Outdoor unit communication error.
Power voltage abnormal
Less frequent defects.
<Indicating a failure on
the outdoor unit>
the outdoor unit>
•
The “LD301” indicates a mode of failure detected on the outdoor unit side by the blinking
frequency.
frequency.
Upon failure detection, the outdoor unit will shut down and the LD301 continues to blink
until the unit is reset. (In the event of communication errors, the LD301 continues to blink
until communication is restored)
until the unit is reset. (In the event of communication errors, the LD301 continues to blink
until communication is restored)