Fujitsu AB*18LBAJ Service Instruction

Trouble shooting 34
INDOOR UNIT
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
OKOK
VDD permanence stop protection
(Electric air clean)
Electric air clean unit
Indoor Unit Controller PCB Circuit
When the air cleanness monitor trial protection operates 4 times.
1. Electric air clean unit failure 2. Controller PCB failure
Check Point 1 : Check the Electric air clean unit
Check the Micro switch in Electric air clean unit.
(Check ON/OFF switching operation by using a meter.)
Check the front panel is closed.
02-40
Check Point 2 : Replace Controller PCB
If Check Point 1 do not improve the symptom, change Controller PCB.
Check Point 2 : Replace Controller PCB
If Check Point 1 do not improve the symptom, change Controller PCB.
Trouble shooting 35
INDOOR UNIT
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
OKOK
Reverse-VDD permanence stop protection
(Electric air clean power supply circuit
abnormal)
Electric air clean unit
Indoor Unit Controller PCB Circuit
The air clean operation signal was detected for 1 minute at the time
of air clean mode OFF.
1. Electric air clean unit failure 2. Controller PCB failure
Check Point 1 : Replace Electric air clean unit
Change Electric air clean unit.
>>If Micro switch is detective, replace Electric air clean unit.
Refer to error code table.
Refer to error code table.

Fujitsu AB*18LBAJ Specifications

General

Brand	Fujitsu
Model	AB*18LBAJ
Category	Air Conditioner
Language	English