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89
Diagnosis Servis
Si341213
Penyelesaian Masalah Menggunakan Remote Kontrol
Check the connector
of the fan motor (
1).
Check the fan motor corresponding to the error code
“
H7
” in
the monitor mode.
When confirmation of error 3, 4 shows as follows:
Fan motor 1 (M1F)
When confirmation of error 3, 4 shows as follows:
Fan motor 2 (M2F)
Explanation for
“
”
Turn OFF the power supply.
Is the signal wire
connector for the
corresponding fan motor
normal?
YES
NO
Are the resistance of the fan
motor lead wire between Vcc
and UVW and between GND
and UVW balanced?
NO
YES
Penyelesaian
Masalah
Perhatian
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Ensure the correct connection.
Replace the fan motor.
Replace the PCB Inverter.
For fan motor 1: replace the
IPCB Inverter (A4P)
For fan motor 2: replace the fan
PCB Inverter (A5P)
1. Check the procedure for fan motor connector
(1) Power OFF the fan motor.
(2) Remove the connector (X2A or X4A) on the PCB to measure the following resistance
value.
Judgement criteria: resistance value between each fasa is within ±20%
Connector for signal wires
(X2A or X4A)
X2A
5 Gray
GND
4 Pink
3 Orange
2 Blue
.
Master
unit
Slave
unit 1
Slave
unit 2
Slave
unit 3