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6. Error rectification
22
[Indication] / Problem
Possible cause
Remedy
FAULT POWER
LOSS
Power loss
Find cause
Voltage dip
Find cause
Cabling damaged
Check, repair if necessary
Loose terminals
Check that all connecting terminals and
plugs are tight, retighten if necessary
FAULT EM-STOP
Emergency off is being/has been activated
Unlock
Emergency off switch defective
Check, replace if necessary
Cabling damaged
Check, repair 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
FAULT COMP
TEMP
Final compression temperature exceeded
(1)
Find cause
WARNING HIGH
TEMP
Approach temperature too high
Improve
Defective cooling
Improve
Unit being operated with enclosure open
Close enclosure
Oil injection volume/temperature too low/high Check, find cause
Incorrect oil grade/viscosity
Check, replace oil if necessary
R2 temperature sensor defective
(indication too high)
Check, replace if necessary
FAULT START
TEMP
Start attempt at too low a temperature
(1)
Heat up compressor room
R2 temperature sensor defective (indication
too low)
Check, replace if necessary
WARNING HIGH
PRESS
Operating pressure exceeded by 1.0 bar /
14 psi
(1)
FAULT OVER
PRESS
Operating pressure exceeded by 1.5 bar /
21 psi
(1)
Pressure losses in the system too high
Check, find cause
Line pressure switching points
(4)
too high
Correct
External pressure requirement too high
Check remote on-load/off-load
switching points
Intake controller not closing
Check, find cause
Pressure sensor B1 or B2 defective
(incorrect indication)
Check, replace if necessary
FAULT SENSOR
B1
Faulty supply pressure sensor
Pressure and/or temperature sensor
defective
Cabling to sensor damaged
Check, replace if necessary
Check, replace if necessary