Daikin REYQ8-48PY1B, Service Manual

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Troubleshooting by Indication on the Remote Controller SiBE37-701_B
259 Troubleshooting
3. Troubleshooting by Indication on the Remote
Controller
3.1
“
A0
”
Indoor Unit: Error of External Protection Device
Remote
Controller
Display
A0
Applicable
Models All indoor unit models
Method of
Malfunction
Detection Detect open or short circuit between external input terminals in indoor unit.
Malfunction
Decision
Conditions When an open circuit occurs between external input terminals with the remote controller set to
"external ON/OFF terminal".
Supposed
Causes
„
Actuation of external protection device
„
Improper field set
„
Defect of indoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Actuation of external protection
device.
Change the second code No. to
"01" or "02".
Replace the indoor unit PCB.
YES
YES
NO
NO
External protection
device is connected to
terminals T1 and T2 of
the indoor unit terminal
block.
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.
Check the setting state of the
ON/OFF input from outside by
remote controller.