Problem Solution FAQ
Fault Possible Cause Solution
The display does not light up. Burnt fuse.
Check the protection fuse on
the power voltage.
Check that the power voltage is
present and compliant with
that required for the device
(terminals 1 and 3).
The outputs are not activated.
Incorrect output voltage.
Wiring to solenoid valves.
Check that the unit and
solenoid vale output voltage
agree.
Check wiring between
economiser and solenoid
valves.
The differential pressure
reading is not correct.
Obstructed pneumatic
connections.
Damaged pipes.
Check that the differential
pressure is 0.00 kPa with the
pipes disconnected. In this
case, check that the connection
pipes between device and filter
are not obstructed or damaged.
The cleaning cycle is not
carried out.
The set cycle start threshold
(F08) is too high and therefore
the cycle is not activated.
Adjust the start-up pressure
threshold or set the economiser
to MANUAL mode (F01=0).
Do alarm messages appear?
Check the alarm code with the
table.
Do the alarms fail to activate
signalling devices?
System wiring errors.
No power to alarm devices.
The alarm devices must be
powered by voltage external to
the economiser. Activating to
open the respective relay.
Does post-cleaning start during
normal cleaning?
Fan threshold (F12) set too
high.
Change the post-cleaning start-
up threshold (F12) by lowering
it.
Does post-cleaning fail to start
when the normal cleaning cycle
ends?
Fan threshold (F12) set too
low.
Check that the measured
pressure is lower than the
post-cleaning activation
pressure when the fan is off.
Does the economiser
occasionally reset?
Check the there is no filtered
pulse load on the power line
(spot welding machines,
welding machines, plasma
cutters etc.).
Install a filter on the power line
of the economiser, if needed.
The value of 0.0 kPa does not
appear on the display when the
fan is off.
dP zero calibration (F07) is not
correct.
Calibrate the dP zero by
appropriately setting the
parameter F07 or running the
self-calibration function
explained on page 10.
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