Daikin LX10F11B3 Service Manual page 61

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E406
（SGS）
018
E411
（AMBS）
Alarm Above sensor≦-57℃ (100 kΩ) with 3 minute elapse
Logic or ≧100℃ (0.221 kΩ) with 3 minute elapse
Note: The alarm is activated when sensor or the circuit is disconnected (open) or short-circuited.
Possible ＊Faulty contact of connector X16A and X20A (CPU board)
Causes ＊Temperature sensor failure
＊Controller failure
Trouble Step 1. Check connector X16A / X20A and
Shooting make sure it is properly installed.
Step 2. Disconnect the connectors X16A and X20A,
then check the resistance of sensor
X16A
3
13
15
17
1
X20A
3
5
If the resistance value matches the temperature sensor
characteristic table (refer to 5.2 temperature sensor
characteristics), the sensor is normal.
Step 3. Check the controller (CPU board).
Controller When E406 (SGS failure), Backup by EOS
Action When E407 (EIS failure), Backup by LPT
When E409 (EOS failure), Backup by SGS
When E411 (AMBS failure), Alarm display only
When E435 (ECO IN failure), Backup with economizer system stop
When E437 (ECO OUT failure), Backup with economizer system stop
・ E407
（EIS）
・ E435
（ECO IN）
1
2
4
5
6
14
16
18
2
4
6
・ E409
（EOS）
・ E437
（ECO OUT）
Example of sensor resistance value
measurement (Connector X16A)
* Contact to the connector pins
EIS
correctly.
EOS
SGS
AMBS
ECO IN
ECO OUT
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