3
|
Components
Service manual
236
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
3
Connect the Megger ground test lead directly to the crankcase heater ground
wire.
CAUTION
Do NOT connect the Megger ground test lead to any other ground wire.
4
Measure the insulation resistance between the phase and ground wire. The
measured insulation resistance MUST be >100 MΩ.
Is the measured insulation resistance
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Replace the crankcase heater, see
236].
3.4.2 Repair procedures
To remove the crankcase heater
Prerequisite:
Stop the unit operation via the central controller.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Remove the required plate work, see
315].
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
2
Open the compressor insulation.
3
Detach the spring that fixes the crankcase heater on the compressor.
a
b
a
Spring
b
Crankcase heater
4
Cut all tie straps that fix the crankcase heater harness.
5
Disconnect the crankcase heater connector from the appropriate PCB.
6
To install the crankcase heater, see
236].
Содержание VRV IV+
Страница 473: ......
Страница 474: ......
Страница 475: ......
Страница 476: ...ESIE18 15B 2020 05 Copyright 2020 Daikin Verantwortung für Energie und Umwelt ...