Daikin R407C PLUS - Troubleshooting; Indoor Unit: Error of External Protection Device

Si33-105 Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System 157
3. Troubleshooting
3.1 Indoor Unit: Error of External Protection Device
Remote
Controller
Display
A0
Supposed
Causes
!
Actuation of external protection device
!
Improper field set
!
Defect of indoor unit PC board
Troubleshooting
(VF029)
Actuation of external protection
device.
Change the second code No. to
"01" or "02" .
Indoor unit PC board replacement.
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.
YES
NO
NO
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.