Daikin VRV RXYQ72-384XAYCA, Service Manual

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Troubleshooting by Error Code SiUS342004EB
293 Part 6 Service Diagnosis
Note(s)
Reference
 1. Fan motor connectors
CHECK 16 Refer to page 372.
The fan
cannot b e
rotated b y hand when
disconnecting the
connector from the
fan motor.
Replace the rele v ant fan motor
(M1F, M2F).
YES
Resistance
b etween the fan
motor power s u pply ca b le
terminal and the motor
frame (metallic part) is
less than
1 M .
Replace the rele v ant fan motor
(M1F, M2F).
YES
NO
YES
Resistance
b etween U, V, W
phases of the fan motor
power s u pply ca b le has lost
b alance or short circ u it is
ca u sed b etween U, V,
W phases.
Check for the connector (power
s
u pply ca b le) of the fan motor.
NO
CHECK 16
Replace the fan PCB (A5P, A6P).
YES
The HAP
lamp on the fan
PCB does not b link.
T u rn ON the power s u pply to check for the HAP lamps on the fan
PCB.
Replace the rele v ant fan motor.
(M1F, M2F)
Replace the rele v ant fan motor
(M1F, M2F).
NO
A
U V W
(Red) (White) (Black)
{ { {
NO
Fan motor PCB Connector
M1F A6P X1A
M2F A5P X1A