Fan Motor Connector Check (Power Supply Cable) - Daikin VRV EMERION RXYQ-AATJA Service Manual

SiUS342303E

4.11 Fan Motor Connector Check (Power Supply Cable)

CHECK 16 Check the fan motor connector according to the following procedure.
Outdoor Unit
1. Turn OFF the power supply.
Measure the resistance between phases of U, V, W at the motor side connectors (3-core wire) to
check that the values are balanced and there is no short circuiting, while connector or relay
connector is disconnected.
Part 6 Service Diagnosis
2. Check the transmission
wiring for continuity.
Indoor-outdoor unit
If there is continuity, the
transmission wiring
indoor-outdoor unit
transmission has no
broken wires in it.
Red
White
Black
1. Short circuit
between the
outdoor-outdoor
unit terminal
parts.
2. Short circuit between
the indoor-outdoor unit
terminal parts.
Unified ON/OFF controller Central remote controller
U
Measure the
resistance values
V
between phases
U, V, W.
W
Check
Outdoor-outdoor unit
transmission wiring
1. Check the transmission
wiring for continuity.
If there is continuity, the
outdoor-outdoor unit
transmission has no broken
wires in it.
386