Daikin SkyAir FHQ24PVJU - External Protection Device Abnormality (Except FTQ-TA)

Troubleshooting by Error Codes SiUS281811EA
216 Part 6 Service Diagnosis
4.4 External Protection Device Abnormality (Except FTQ-TA)
Error Code A0
Applicable
Models
All indoor models (except FTQ-TA)
Method of Error
Detection
Detect open or short circuit between external input terminals in indoor unit.
Error Decision
Conditions
When an open circuit occurs between external input terminals with the remote controller set for
external ON/OFF terminal.
Supposed
Causes
 Activation of external protection device
 Improper field setting
 Defective indoor unit PCB
Troubleshooting
Activation of external protection
device.
External
protection
device is connected to
terminals T1 and T2 of the
indoor unit terminal
block.
Replace the indoor unit main PCB
(A1P).
YES
Change the second code No. to
01 or 02.
ON/OFF
input from
outside (mode No.
12, first code No. 1) has
been set to external
protection device input
(second code No.
03) by remote
controller.
YES
NO
Check the setting state of the
ON/OFF input by remote
controller.
NO
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution