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Components
Service manual
282
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
9
Turn OFF the unit via the circuit breaker.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
10
Disconnect the Inverter Analyzer from the Faston connectors.
11
Connect the compressor wiring to the wire terminals U, V and W of the
compressor.
INFORMATION
Use the notes made during disconnection to connect the compressor wiring to the
correct wire terminals of the compressor.
Are the test results OK?
Action
Yes
Power transistors are OK. Return to
No
Replace the inverter PCB, see
Problem solved?
After all checking procedures listed above have been performed:
Is the problem solved?
Action
Yes
No further actions required.
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
3.10.2 Repair procedures
To remove the inverter PCB
Prerequisite:
Stop the unit operation via the central controller.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
315].
1
Access the switch box, see
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
For single fan units
2
Loosen and remove the screws that fix the power terminal assembly.
Summary of Contents for VRV IV+
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