14
Yes
No
No
Yes
Yes
No
Yes
No
Yes
No
No
Yes
Check code : 6800
Indoor controller board is defective.
Connection is defective.
Error was found in the signal transmitted or
received between the indoor and outdoor units.
Turn off the power supply and turn it on again to operate the unit in
cooling or heating mode.
Is the connecting wire between
the indoor and outdoor units
connected properly?
Normal
Operation lamp blinks once in a
fixed period.
Remove the devices.
Are there any devices emitting
noise near the power supply or
the connecting wire between the
indoor and outdoor units?
Check code : 5101
Measure the resistance of
room temperature thermistor.
Indoor controller board is defective.
Check the room temperature thermistor.
Turn off the power supply and turn it on again to operate the unit in
cooling mode.
Is the connector CN20 on the
indoor controller board connected?
Connection is defective.
Room temperature
thermistor is defective.
Is the resistance 0 (short circuit) or
∞
(open circuit)?
Normal
Operation lamp blinks twice in a
fixed period.
Check of indoor controller board and indoor fan motor
OC303-A-1.qxp 04.9.21 4:08 PM Page 14
