Daikin REMQ16PY1 Сервис мануал онлайн [314/491] 549044

Daikin REMQ16PY1 Сервис мануал онлайн [314/491] 549044
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*1: Procedure for checking the electronic expansion valve for
the drive unit coil.
Disconnect the electronic expansion valve connector (X7A)
from the PC board, and then make measurement of
resistance and check for continuity between the connector
pins to make judgment.
Yellow
(2)
Brown
(6)
Blue
(4)
φ2 φ4
[COM]
[COM]
φ1
φ3
M
NO
YES
YES
NO
NO
YES
Turn OFF the power supply
once and then ON again.
Does the power
supply normally come
back ON?
While in monitor mode, identify an electronic expansion valve
subject to the Malfunction Code "
F9". (For checking procedure,
refer to information on P226~227.)
When Check 4 is set as shown below:
Check 3 Check 4
Probe any external causes
other than failures (e.g.
noises).
Properly and securely
connect the connector.
Replace the electronic
expansion valve coil
concerned.
Replace the BS unit
PC board.
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 PC board
concerned properly
connected?
Is the
resistance of
the electronic
expansion valve coil
normal?
(See *1)
(1) White
(2) Yellow
(3) Orange
(4) Blue
(5) Red
(6) Brown
White (1)
Red (5)
Orange (3)
The normal states are as follows:
1
No continuity between Pins (1) and (2)
2
Approx. 300Ω resistance between Pins (1) and (3)
3
Approx. 150Ω resistance between Pins (1) and (5)
4
Approx. 300Ω resistance between Pins (2) and (4)
5
Approx. 150Ω resistance between Pins (2) and (6)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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