3. Troubleshooting by Indication on the Remote
" Error of External Protection Device
All indoor unit models
Detect open or short circuit between external input terminals in indoor unit.
When an open circuit occurs between external input terminals with the remote controller set to
"external ON/OFF terminal"
Actuation of external protection device
Improper field set
Defect of indoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
connected to terminals T1
and T2 of the indoor
Check the setting state of the ON/OFF
input from outside by remote controller.
(mode No. 12, first code No. 1)
has been set to external protection
device input (second code
protection device is
input from outside
No. 03) by remote
Troubleshooting by Indication on the Remote Controller
Actuation of external protection
Check the setting state of the
ON/OFF input from outside by
Change the second code No. to
"01" or "02" .
Replace the indoor unit PCB.