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Issue
Alarm
description
code
INVO_1
Oil level
INVP_1
6.1
switch
INVT_1
SINV_1
Inverter
7.1
SINV_1
failure
Motor
INVP_1
8.1
thermistors
INVT_1
alarm
SINV_1
Fan motor
9.1
INVO_3
failure
CC7.8.18/1219/E
Possible root cause
Insufficient oil amount in the
compressor
In this case read the error description
on the drive display
High motor temperature
Failure of the thermal contact of the
condenser fan
Troubleshooting
Add additional oil to increase the oil level (slightly
above the middle of the sight glass) until the green
LED turns on again
To solve the problem, refer to the drive application
guidelines
Verify operating conditions, voltage supply on
each phase and check the winding resistance
Check the fan according to the fan manufacturer's
guidelines
2/9
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