Cod. 710.0167.01.00 Rev02
– 10.2019
© Copyright 2019 OMI Srl - All rights reserved
9
– 12
4.2 TROUBLESHOOTING
NOTE: FOLLOWING BEHAVIORS ARE NORMAL CHARACTERISTIC OF OPERATION AND NOT TROUBLES
Variable speed of the fan.
Display of message ESA and ES2 in case of operation without load or low load.
A 2 minute delay for dryer to start after pressing the on/off switch.
Troubleshooting and eventual control and/or maintenance operations must be performed by qualified
personnel.
For maintaining the refrigerating circuit of the machine, contact a refrigeration engineer.
TROUBLE
DISPLAY
POSSIBLE CAUSE
REMEDY
WAT
ER IN T
HE SYSTEM
Control panel
display is
blank
No power in the line.
Restore the power in the line.
DD1300
Phases connected incorrectly.
Connect the phases correctly.
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.
Pic.3
Clean the condensate drainage system filter mesh.
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.
DD1300
Intervention of the high pressure switch.
Reset the high pressure switch.
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 localOMI 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 localOMI distributor.
High pressure switch defective or burned out
(if present).
Turn off the dryer and call your localOMI distributor.
Gas leakage in the refrigerating circuit.
Turn off the dryer and call your localOMI distributor.
Defective fan.
Replace the fan.
Protection fuse burned out (if present).
Replace the fuse.
