Daikin LX10F11B Service Manual page 66

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027 E805
（FA sensor built in the unit only）
Alarm
FA sensor failure
Logic
Possible 1. Incorrect setting
Causes 2. FA wiring is installed incorrectly.
FA sensor failure
3. Controller (CPU board) failure
Trouble 1-1. Check FA sensor setting.
Shooting LOW-FLY: With FA sensor (Ventilator with insect screen)
LOW: With FA sensor (Ventilator without insect screen)
OFF: Without FA sensor
＊ Confirmation of setting: 2.3 ※4 Configuration Set
Information
1-2. Check if FA setting made "LOW-FLY" or "LOW" for
unit without FA sensor.
2. Turn on the circuit breaker and check if there is DC5V
input from the controller.
FAS：X8A No.4-6（Red-Black）
X8A
1
CPU
2
3
board
4
5
6
3. Make sure that the FA wire is properly attached to the ventilator outlet.
Operate the ventilator outlet lever to fully open and fully close. If an alarm is detected, replace
the FA sensor.
Controller
E805 Alarm display only
Action
028 E807
（FA sensor built in the unit only）
Alarm
Ventilator is open during frozen operation.
Logic
Possible
Ventilator is still open when the unit is in frozen mode
Causes
Trouble
Make sure to fully close ventilator in frozen operation
Shooting
Controller
E807 Alarm display only
Action
B–B/R ：Input Voltage DC5V
DC5V
B-B/Y ：Output Voltage
V
Black
Blue/Yellow
Blue/Red
1-1. Change setting as correct ： ※12
Configuration Set in paragraph
2.3.
1-2. Set to "OFF" if FA setting made
"LOW-FLY" or "LOW".
2. If there is no input DC5V, then
check the controller.
If there is input DC5V, then
proceed to next step.
FAS
2-38