Daikin REMQ14PY1 [316/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred

Daikin REMQ14PY1 [316/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred
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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
NO
YES
*1. Check procedure for fan motor connector
(1) Power OFF the fan motor.
(2) Remove the connector (X2A or X4A) on the PC board to
measure the following resistance value.
Judgment criteria: resistance value between each phase is
within ±20%
Check the fan motor corresponding to the malfunction code
H7” in the monitor mode.
(Refer to P226~227 for how to check)
When check 3 shows as follows:
? Fan motor 1 (M1F)
When check 3 shows as follows:
? Fan motor 2 (M2F)
Identify outdoor unit based on Check 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.
Replace inverter PC board.
For fan motor 1: replace
inverter PC board (A2P)
For fan motor 2: replace fan
inverter PC board (A5P)
Replace fan motor.
Ensure correct connection.
Connector for signal wires
(X2A or X4A)
X2A
(V2799)
5 Gray
4 Pink
3 Orange
2 Blue
1 Yellow
GND
Vcc
W
V
U
Measure the
resistance
between
Vcc-UVW and
GND-UVW.

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