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Flash
code
Alarm conditions
Possible failure reasons
Troubleshooting measures
8
Low voltage
Trip: Appears when there is a low
compressor voltage.
Lockout:
Appears
when
10
consecutive low voltage trip alarms
occur.
Supply voltage is not in the
specified range.
Loose wiring connections at
the terminal plate.
Worn out contactors.
Faults with other peripheral
electrical loads.
Check voltage supply from the main buss.
Check voltage into and out of contactor. Repair or replace contactor if
necessary.
Measure voltage at the compressor terminal.
Check that motor electrical connections are tight at the compressor.
Check that there are not any faults with other peripheral electrical loads (for
example fan motors).
9
Voltage
imbalance
Trip: Appears when the voltage
imbalance value exceeds the set
value (default 5%).
Loose wiring connections at
the compressor terminal plate
inside T-Box.
Worn out contactors.
Faults with other peripheral
electrical loads.
Single phasing conditions.
Check voltage supply from the main buss.
Check voltage into and out of contactor. Repair or replace contactor if
necessary.
Measure voltage at the compressor terminal.
Check that motor electrical connections are tight at the compressor.
Check that there are not any faults with other peripheral electrical loads (for
example fan motors).
Information in this document is subject to change without notice
.
