Table of Contents
[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
7-6-5
Error Code [4115] Detail Code 101, 102
1. Error code definition
Power supply signal sync error
2. Error definition and error detection method
The frequency cannot be determined when the power is switched on.
3. Cause, check method and remedy
Outdoor unit
Cause
(1)
Power supply error
(2)
Noise filter problem
Coil problem
Circuit board failure
(3)
Faulty wiring
(4)
Wiring failure
Between noise filter CN3 and noise
filter CN2 and control board CNAC
(5)
Control board failure
Hydro unit
Cause
(1)
Power supply error
(2)
Coil problem
(3)
Faulty wiring
(4)
Wiring failure
Between TB01 and PS board CNAC
(5)
PS board failure
BS_07_E
Check method and remedy
Check the voltage of the power supply terminal block (TB1).
Check the coil connections.
Check for coil burnout.
Confirm that the voltage at the CN3 connector is 198 V or above.
Check fuse F01 on the control board.
Confirm that the voltage at the control board connector CNAC is 198 V
or above.
If none of the items described above is applicable, and if the trouble re-
appears even after the power is switched on again, replace the control
board.
Check method and remedy
Check for an occurrence of a(n) (instantaneous) power failure at the
time of error detection.
Check that the power-supply voltage is 198 V or above (TB01).
Check to see if the power-supply frequency is in the range between 45
and 54 Hz (55 and 64 Hz) (TB01).
Check the power supply voltage waveform for distortion.
Check for coil burnout.
(L101 and L102 mounted on the PS board)
Check fuse F111, F401 (PS board)
Confirm that the voltage at the PS board connector CNAC (2-4 pin) is
198 V or above.
If none of the items described above is applicable, and if the trouble re-
appears even after the power is switched on again, replace the PS
board.
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