Daikin REYQ8-48PY1B, Руководство по обслуживанию

Страница: 315 / 477

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 304
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the fan motor corresponding to the malfunction code
“
H7
” in the monitor mode.
(Refer to P.255~P.256 for how to check.)
When Confirmation of malfunction 3 shows as follows:
→
Fan motor 1 (M1F)
When Confirmation of malfunction 3 shows as follows:
→
Fan motor 2 (M2F)
Identify outdoor unit based on Confirmation of malfunction 4.
Explanation for “ ”
Master unit
Slave unit 1
Slave unit 2
System
Cut the power supply off.
Check if signal wire
connector for the
corresponding fan motor
is normal.
Check the connector
of the fan motor (
∗
1).
Check if the resistance of the fan
motor lead wire between Vcc and
UVW and between GND and UVW
are balanced.
∗
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 phase is
within ±20%
NO
Ensure correct connection.
YES
NO
YES
Replace the fan motor.
Replace the inverter PCB.
z
For fan motor 1: replace the
inverter PCB (A2P)
z
For fan motor 2: replace the fan
inverter PCB (A5P)
Connector
for signal wires (X2A or X4A)
X2A
5 Gray
4 Pink
3 Orange
2 Blue
1 Yellow
5 Gray GND
Vcc
W
V
U
Measure the
resistance
between Vcc-
UVW and
GND-UVW. Measure the
resistance
between Vcc-
UVW and
GND-UVW.