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Cod. 710.0138.62.00 Rev00 – 03.2016
9 - 30
TROUBLE DISPLAY
POSSIBLE CAUSE
REMEDY
W
A
T
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T
H
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S
Y
S
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M
Control
panel
display is
blank
No power in the line.
Restore the power in the line.
Problems with cabling.
Check cabling; if the trouble persists, replace it.
Problems with the electronic control
board.
Check the electronic control board; if the trouble
persists, replace it.
The dryer is off.
Turn it on by pressing the ON/OFF switch for 1
second.
Dryer in stand-by.
Wait 2 minutes after the dryer is switched on.
Compressed air inlet/outlet inverted.
Check if the compressed air inlet/outlet is connected
properly.
The flow rate and/or temperature of the
air entering the dryer are higher than the
nominal values.
Restore the nominal conditions.
The ambient temperature is higher than
the nominal values.
Restore the nominal conditions.
The condenser is dirty.
Clean the condenser.
Condensate drain is not functioning.
Clean the condensate drainage system pre-filter.
(Pic.3)
Replace the coil of the drainage solenoid valve if
burned.
Clean or replace the drainage solenoid valve if
clogged/jammed.
Check the C8 and C9 parameters of the electronic
control board; if the trouble persists, replace it.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Problems with cabling or with the
electronic control board.
Check the cabling and the electronic control board, if
the trouble persists, replace them.
Activation of compressor’s internal
thermal protection.
Wait one hour and check again. If the fault persists:
stop dryer and call your local OMI distributor.
Problems with the electrical components
of the compressor.
Check the electrical components of the compressor.
Defective compressor.
Replace the compressor.
The flow rate and/or temperature of the
air entering the dryer are higher than the
nominal values.
Restore the nominal conditions.
The ambient temperature is higher than
the nominal values.
Restore the nominal conditions.
The condenser is dirty.
Clean the condenser.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Fan pressure switch defective or burned
out (if present).
Turn off the dryer and call your local OMI distributor.
High pressure switch defective or burned
out (if present).
Turn off the dryer and call your local OMI distributor.
Gas leakage in the refrigerating circuit.
Turn off the dryer and call your local OMI distributor.
Defective fan.
Replace the fan.
Protection fuse burned out (if present).
Replace the fuse.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Gas leakage in the refrigerating circuit
without load.
Turn off the dryer and call your local OMI distributor.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Series of alarms very close to each
other.
Call your local OMI distributor.