MTU 16V4000L32FNER Operating Instructions Manual page 109

1.4520.681 – MIC5 E2 Tr3 index to late / missing
Yellow alarm. Initiated by MIC5.
Cause
Index mark of pulse sensor 3
(B13.2) detected too late or
missing.
1.4530.007 – Shutdown
Red alarm. Initiated by compressor bypass.
Cause
Hardware not ready for operation.
1.4530.008 – alarm
Yellow alarm. Initiated by compressor bypass.
Cause
Summary alarm (for details, refer
to the source alarm).
1.4530.009 – Derating Active
Yellow alarm. Initiated by compressor bypass.
Cause
Internal temperature too high.
Adjustment rate is reduced.
1.4530.010 – PWM Input High Duty Cycle Error
Yellow alarm. Initiated by compressor bypass.
Cause
Compressor bypass setting is not
correct.
1.4530.011 – PWM Input Low Duty Cycle Error
Yellow alarm. Initiated by compressor bypass.
Cause
Compressor bypass setting is not
correct.
1.4530.012 – Analog Input High Error
Yellow alarm. Initiated by compressor bypass.
Cause
Compressor bypass setting is not
correct.
Corrective action
u Check sensor, sensor gap, cabling, data record settings and timing
wheel. Replace sensor as necessary. (→ Page 203) (→ Page 202)
Corrective action
1. Restart compressor bypass flap.
2. Replace compressor bypass flap.
Corrective action
u Rectify cause of alarm.
Corrective action
1. Check room temperature and ventilation.
2. Check mechanical system.
3. Restart compressor bypass flap.
Corrective action
u Check compressor bypass flap setting.
Corrective action
u Check compressor bypass flap setting.
Corrective action
u Check compressor bypass flap setting.
MS150121/02E 2017-09 | Troubleshooting | 109