MTU 12V4000L32F Operating Instructions Manual page 111

1.4530.019 – Run Enable not active
Yellow alarm. Initiated by compressor bypass.
Cause
Compressor bypass setting is not
correct.
1.4530.020 – Spring Check Failed
Yellow alarm. Initiated by compressor bypass.
Cause
Compressor bypass setting is not
correct.
1.4530.021 – Internal Fault
Yellow alarm. Initiated by compressor bypass.
Cause
Hardware not ready for operation.
1.4530.022 – CAN Fault
Red alarm. Initiated by compressor bypass.
Cause
CAN bus connection faulty.
1.4540.009 – Zero Pressure Detected
Yellow alarm. Initiated by TecJet.
Cause
No gas pressure/gas flow
detected.
1.4540.010 – Zero Flow Detected
Yellow alarm. Initiated by TecJet.
Cause
No gas pressure/gas flow
detected.
1.4540.011 – Flow Not Reached
Red alarm. Initiated by TecJet.
Cause
No gas flow detected.
Corrective action
u Check compressor bypass flap settings.
Corrective action
u Check compressor bypass flap settings.
Corrective action
1. Restart compressor bypass flap.
2. Replace compressor bypass flap.
Corrective action
1. Check cabling (→ Page 202).
2. Check compressor bypass flap settings.
Corrective action
u Check gas pressure.
Corrective action
u Check gas pressure.
Corrective action
1. Check inlet and outlet.
2. Check gas pressure, gas quality, gas filter, gas line for obstruction.
3. Check engine for overloading.
MS150104/03E 2017-09 | Troubleshooting | 111