6. Error rectification
[Indication] / Problem
Possible cause
Remedy
22
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 POWER
LOSS
Motor has been started too often
Limit number of starts/hour
Insufficient motor cooling
Improve
Excessive power consumption
Check, find cause
Defective power supply
Check, find cause
Motor defective
Check, replace if necessary
Contactor-type star delta starter defective
Check, repair 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
Network 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
