UNITY LAUNDRY SYSTEMS UTS40 - VFD Alarm Codes; Alarm Log Access

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Part. 14000001 Rev. 04//2021
®/™ ©2021 Unity Laundry Systems. All rights reserved.
ALARM
11.2 VFD ALARMS
ALARM NAME DESCRIPTION REMEDIES
1. Motor overload
Motor thermal model detects the motor temperature
rise is overhigh
Refer to above table
2. Motor load overweight
Motor current exceeds the load overweight detection
level, and the detection time is exceeded
Refer to above table
3. Inverter underload
Inverter output current is less than the underload pro-
tection level, and the detection time is exceeded
Refer to above table
4. Standby
5. Standby
6. Standby
7. Input phase loss Lack of input phase or imbalance among three phases Refer to above table
8. Output phase loss Lack of output phase Refer to above table
9. Standby
10. Parameter saving fail Failure in writing parameters Refer to above table
11. Standby
12. DC link undervoltage DC link voltage is lowter than the threshold
It is normal for this alarm information
to be displayed when the power is
off
13. C1 output protection Generated by comparator 1
Checkthedenitionofcomparator
1 output
14. C2 output protection Generated by comparator 2
Checkthedenitionofcomparator
2 output
15. Standby
16. Standby
17. Standby
18. Parameter check error Improper parameter setting
Correct parameter setting or restore
factory setting.
11.3 ALARM LOG
In the alarm interface, press [Up] and [Down] at the same time to enter the alarm log interface. It will log three new alarms
and time of occurrance.Press [Up] and [Down] to switch the alarm logs.