Daikin LX10F11B Service Manual page 53

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004 F401 ・ F405 ・ F407 ・ F409
Alarm F401 SS, DSS, RS and DRS all failed during chilled mode, or X16A (CPU board) is disconnected.
Logic F405 Multiple sensor (HPT,DCHS1,DCHS2) all failure.
and F407 Multiple sensor (HPT,LPT) all failure.
Possible F409 Multiple sensor (LPT,DCHS1,DCHS2) all failure.
Causes
Trouble The unit cannot perform backup operation and cannot be controlled.
Shooting Replace each failed sensor.
016
Refer to ,
Controller
F401, F405, F407, F409 Unit stop
Action
005 F701 ・ E701
Alarm F701
Logic ① Abnormal power voltage is detected within 2 seconds when the unit starts. (≧AC565V or ≦
AC300V)
② One of R, S or T phase is open when the unit starts (F705 is also generated when S phase is
open.)
E701
③Abnormal power voltage is detected during operation. (≧AC565V or ≦AC329V)
④ One of R, S or T phase is open during operation (F705 is also generated when S phase is
open.)
Possible Power supply voltage is at high voltage (≧AC565V) or low voltage (≦AC329V).
Causes One of R,S,T phase is open
Trouble ①、③ Power check
Shooting 1. Check if the actual power supply within range (AC329V〜AC565V).
②、④ Check R,S,T phase is open
2.1 Check if there is open phase on the primary side
(Power side) of circuit breaker
2.2 Check if there is broken wire (open) on the secondary
side of circuit breaker
＊Between CB〜X63A (PT/CT board)
Controller F701 Unit stop
Action
E701 Restart after 3 minutes
017 019
, and .
2.1 Repair or replace if there is a
problem in power plug or cable
Provide specified power supply
if there is open phase in power
supply
2.2 Repair as needed.
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