Troubleshooting - omi DD36 Operator's Manual

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.
TROUBLE DISPLAY
Control panel
display is
blank
Cod. 710.0167.01.00 Rev02 – 10.2019
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.
POSSIBLE CAUSE
No power in the line.
DD1300
Phases connected incorrectly.
Problems with cabling.
Problems with the electronic control board.
The dryer is off.
Dryer in stand-by.
Compressed air inlet/outlet inverted.
The flow rate and/or temperature of the air
entering the dryer are higher than the
nominal values.
The ambient temperature is higher than the
nominal values.
The condenser is dirty.
Condensate drain is not functioning.
Pic.3
The temperature control probe is positioned
improperly or faulty.
DD1300
Intervention of the high pressure switch.
Problems with cabling or with the electronic
control board.
Activation of compressor's internal thermal
protection.
Problems with the electrical components of
the compressor.
Defective compressor.
The flow rate and/or temperature of the air
entering the dryer are higher than the
nominal values.
The ambient temperature is higher than the
nominal values.
The condenser is dirty.
The temperature control probe is positioned
improperly or faulty.
Fan pressure switch defective or burned out
(if present).
High pressure switch defective or burned out
(if present).
Gas leakage in the refrigerating circuit.
Defective fan.
Protection fuse burned out (if present).
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REMEDY
Restore the power in the line.
Connect the phases correctly.
Check cabling; if the trouble persists, replace it.
Check the electronic control board; if the trouble persists,
replace it.
Turn it on by pressing the ON/OFF switch for 1 second.
Wait 2 minutes after the dryer is switched on.
Check if the compressed air inlet/outlet is connected
properly.
Restore the nominal conditions.
Restore the nominal conditions.
Clean the condenser.
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.
Check the probe; if the trouble persists, replace it.
Reset the high pressure switch.
Check the cabling and the electronic control board, if the
trouble persists, replace them.
Wait one hour and check again. If the fault persists: stop
dryer and call your localOMI distributor.
Check the electrical components of the compressor.
Replace the compressor.
Restore the nominal conditions.
Restore the nominal conditions.
Clean the condenser.
Check the probe; if the trouble persists, replace it.
Turn off the dryer and call your localOMI distributor.
Turn off the dryer and call your localOMI distributor.
Turn off the dryer and call your localOMI distributor.
Replace the fan.
Replace the fuse.
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