Daikin VRV IV+ Service Manual page 238

3 | Components
3.5.2 Repair procedures
To remove the current sensor
Service manual
238
3 Check that pins 1 and 4 on connector X101A are bridged.
Result: If the pins are NOT bridged, install the bridge.
a Connector X101A
4 Check the wiring from pins 2 and 3 of connector X101A to the current sensor.
5 Disconnect the current sensor connector from the connector X101A on the
main PCB and measure the resistance between pins 2 and 3 of the current
sensor connector.
Result: The measured value MUST be 45~50 Ω.
Is the measured resistance correct?
Yes
No
Prerequisite: Stop the unit operation via the central controller.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Disconnect the current sensor connector from the main PCB.
a Current sensor
a
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Replace the current sensor, see
"3.5.2 Repair
4
procedures" [ 238].
4
"3.15 Plate work" [ 315].
a
b
e
b
c
b
e
d
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05