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Components
Service manual
280
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Are the test results OK?
Action
Yes
Diode module and power module are
OK. Perform a power transistor check of
the inverter PCB, see
No
Replace the inverter PCB, see
To perform a power transistor check of the inverter PCB
Prerequisite:
First check the rectifier voltage of the inverter PCB, see
Prerequisite:
Stop the unit operation via the central controller.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Open the compressor insulation.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
2
Remove the cover of the compressor wire terminals.
a
a
Compressor wire terminals cover
3
Disconnect the Faston connectors from the compressor wire terminals U, V
and W.
INFORMATION
Note the position of the Faston connectors on the compressor wire terminals to
allow correct connection during installation.
Summary of Contents for VRV IV+
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