9 Faults and Warnings
Gardner Denver
30
9.5
Fault Numbers E400 .. E495
(compressor-related)
Fault Numbers E400 .. E495
Display
Possible Cause
Remedy
Fault E400:
Power Supply Failure
Power failure.
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 E401:
Emergency Stop Activated
Emergency off is being/has been activated.
Unlock.
Emergency off switch defective.
Check, renew if necessary.
Cabling damaged.
Check, repair if necessary.
Fault E402:
High Motor Temperature
Motor has been started too frequently.
Limit number of starts/hour.
Inadequate motor cooling.
Power consumption too high.
Improve.
Check, find cause.
Faulty power supply.
Motor faulty.
Check, find cause.
Check, change if necessary.
Fault E403:
Compressor Disch. Temp.
Cooling water outlet temperature
exceeded.
(1)
Find cause.
Intake temperature too high.
Improve.
Inadequate cooling.
Improve.
Unit panel open
during operation.
Close panel.
R2 temperature sensor defective
(indication too high).
Check, renew if necessary.
Fault E404:
Low Start Temperature
Start attempt at too low
temperature.
(1)
Heat up compressor room.
R2 temperature sensor defective
(indication too low).
Check, renew if necessary.
Fault E405:
Discharge Over Pressure
Rated pressure exceeded by 1.5 bar / 21
psi.
(1)
Pressure losses in the system too high.
Check, find cause.
Line pressure set points
(2)
too high.
Correct.
External pressure requirement too high.
Check remote on-load/off-load switching
points.
Intake regulator not closing.
Check, find cause.
Blow-off / bypass valve defective.
Check, find cause.
Pressure sensor B1 or B2 defective
(incorrect indication).
Check, renew if necessary.
Fault E406:
Line Pressure Sensor B1
Faulty line pressure sensor.
Check, renew if necessary.
Pressure and/or temperature sensor
defective.
Check, renew if necessary.
Cabling to sensor damaged.
Check, renew if necessary.
Fault E407:
Disch. Press. Sensor B2
Faulty air end discharge pressure sensor.
Check, renew if necessary.
Pressure and/or temperature sensor
defective.
Check, renew if necessary.
Cabling to sensor damaged.
Check, renew if necessary.
1)
Unit-specific setting: See
Factory Settings
Menu
.
2)
Unit-specific setting: See
Control
Menu
.
VS
