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1. DELCOS 3100 Electronics
[Display] / Problem
Possible Cause
Remedy
21
[FAULT POWER LOSS]
Power failure
Search for cause
Power drop
Search for cause
Damaged cables
Check, repairing if necessary
Detached/loose terminals
Check all connection terminals and
plugs for a tight fit, tightening if
necessary
[FAULT EM-STOP]
Emergency-off is / has been actuated
Unlock
Emergency-off switch faulty
Check, changing if necessary
Damaged cables
Check, changing if necessary
[FAULT EM-STOP (SR)]
Absent emergency-OFF identification by SR
electronics
Emergency-off switch faulty
Check, changing if necessary
Damaged cables
Check, changing if necessary
[FAULT MOTOR TEMP]
Motor has been started too frequently
Limit number of starts/hour
Inadequate motor cooling
Improve
Power consumption too high
Check, search for cause
Faulty power supply
Check, search for cause
Motor faulty
Check, changing if necessary
Star-delta starter faulty (only in FS or RS
version with bypass option)
Check, repairing if necessary
[FAULT COMP TEMP]
Final compression temperature exceeded
(1)
Search for cause
[WARNING HIGH TEMP]
Intake temperature too high
Improve
Inadequate cooling
Improve
System operated with open cladding
Close cladding
Temperature sensors are too faulty
(reading too high)
Check, changing if necessary
[FAULT START TEMP]
Start attempted at insufficient temperature
(1)
Heat compressor room
Temperature sensors R2 faulty
(reading too low)
Check, changing if necessary
[WARNING HIGH PRESS]
Operating pressure exceeded by 1.0bar/14psi
(1)
[FAULT OVER PRESS]
Operating pressure exceeded by 1.5bar/21psi
(1)
Excessive pressure losses in the system
Check, search for cause
Network switching-point pressures
(4)
too high Correct
External pressure request too high
Remotely check on-load/off-load
switching points
Intake controller not closing
(FS or RS version only)
Check, search for cause
Pressure sensor B1 or B2 faulty
(incorrect reading)
Check, changing if necessary
[FAULT SENSOR B1]
Faulty network pressure sensor
[FAULT SENSOR B2]
Faulty final compression pressure sensor