External Protection Device Abnormality (Except Ftq-Ta) - Daikin SkyAir RZR-TA Series Service Manual

Troubleshooting by Error Codes
4.4

External Protection Device Abnormality (Except FTQ-TA)

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