Daikin REYQ8-48PY1B, Руководство по обслуживанию

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SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 302
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn OFF the power supply
once and then ON again.
Does the power
supply normally
come back ON?
Probe any external causes
other than failures (e.g.
noises).
NO
While in monitor mode, identify an electronic expansion valve
subject to the Malfunction Code "
F9
". (For checking procedure,
refer to information on P.255~P.256.)
{
When Confirmation of malfunction 4 is set as shown below:
Confirmation of malfunction 3 Confirmation of malfunction 4
→
Electronic expansion valve (Y4E)
→
Electronic expansion valve (Y5E)
→
Electronic expansion valve (Y2E)
→
Electronic expansion valve (Y3E)
→
Electronic expansion valve (Y1E)
Is the connector for the
electronic expansion valve
of the PCB concerned
properly connected?
Is the resistance of the
electronic expansion
valve coil normal?
(See *1)
YES
YES
YES
NO
NO
Properly and securely
connect the connector.
Replace the electronic
expansion valve coil
concerned.
Replace the BS unit PCB.
*1: Procedure for checking the electronic expansion valve for
the drive unit coil.
Disconnect the electronic expansion valve connector (X7A)
from the PCB, and then make measurement of resistance
and check for continuity between the connector pins to make
judgement.
White (1)
Red (5)
Orange (3)
[COM]
φ
1
φ
3
M
φ
2
φ
4
Yellow
(2)
Brown
(6)
Blue
(4)
[COM]
(1) White
(2) Yellow
(3) Orange
(4) Blue
(5) Red
(6) Brown
The normal states are as follows:
(1) No continuity between Pins (1) and (2)
(2) Approx. 300
Ω
resistance between Pins (1) and (3)
(3) Approx. 150
Ω
resistance between Pins (1) and (5)
(4) Approx. 300
Ω
resistance between Pins (2) and (4)
(5) Approx. 150
Ω
resistance between Pins (2) and (6)