Daikin REYQ8-48PY1B, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiBE37-701_B
275 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
NO
NO
NO
YES
YES
Shut the power supply off after
connection and then restart.
Replace the electronic expansion
valve coil.
Replace the relay cables.
When restarting the operation after
shutting the power supply off does
not work, replace the indoor unit
PCB.
Electronic
expansion valve is
connected to X7A of
indoor unit PCB.
Check (*1) of
electronic
expansion valve
coil indicates
normal.
Relay cables short
circuit or
disconnected.
*1: How to check the electronic expansion valve coil
Remove the connector for electronic expansion valve (X7A) from PCB. Measure the resistance value
between pins and check the continuity to judge the condition.
White (1)
Red (5)
Orange (3)
φ
1
φ
3
M
φ
2
φ
4
Yellow
(2)
Brown
(6)
Blue
(4)
1) White
2) Yellow
3) Orange
4) Blue
5) Red
6) Brown
The normal products will show the following conditions:
(1) No continuity between (1) and (2)
(2) Resistance value between (1) and (3) is approx. 300
Ω
(3) Resistance value between (1) and (5) is approx. 150
Ω
(4) Resistance value between (2) and (4) is approx. 300
Ω
(5) Resistance value between (2) and (6) is approx. 150
Ω