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Components
Service manual
225
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
a
a
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Faston connector
7
Install the compressor insulation.
8
Turn ON the power using the respective circuit breaker.
9
Start the unit operation via the central controller.
10
Once the compressor operates, measure the U-V-W inverter voltages. All
measurements MUST be the same.
Inverter voltage measurements are
correct?
Action
Yes
Continue with the next step.
No
Replace the inverter PCB, see
11
Measure the current in each phase U-V, V-W and U-W. All measurements
MUST be the same.
Compressor motor winding current
measurements are correct?
Action
Yes
Perform an insulation check of the
compressor, see
221].
No
Preventively replace the compressor,
see
227].
To perform an insulation check of the compressor
Prerequisite:
First perform an electrical check of the compressor, see
Prerequisite:
Stop the unit operation via the central controller.
1
Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
356].
2
Remove the cover of the compressor wire terminals.
Summary of Contents for VRV IV+
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