Manual Ozone Generating System
SMOevo
PLUS
Troubleshooting
Manual_SMOevoPLUS_eng_01.2019.doc
page 146 of 179
Message
No.
Message shown on the display
Description /
Possible Cause
Countermeasures
67
PSU:DI20.2 Alarm fault DICON
Fault message from Dicon.
Cable break.
Incorrect wiring.
24V supply of Dicon missing.
Primary electronic fault.
Converter input voltage too low.
Step-up transformer defective.
Check cables and connections.
Check the fault message on the
display, contact Wedeco Service /
Fault rectification only by qualified
staff.
Refer to Chapter Contact Addresses
.
68
PSU:DI20.3 Alarm capacitor bank
temperature high
Temperature capacitor too high.
Ambient temperature too high.
Cable break.
Check air cooling.
Check chiller. (cleaning)
Check cables and connections.
69
PSU:DI20.4 Alarm powerblock temperature
high
Power element too warm.
Ambient temperature too high.
Cable break.
Cooling water inlet temperature
too high.
Scale or dirt deposits.
Too low cooling water flow.
Check air cooling.
Check chiller.
Check cables and connections.
Check cooling water temperature.
Clean system.
Check cooling water flow.
70
PSU:DI20.5 Alarm fault DC circuit
Cabinet door open.
Main contactor defective.
Rectifier defective.
Converter input voltage not OK.
Close door.
Check door switch.
Check current paths of main
contactor.
Replace power element PSU,
contact Wedeco Service / Fault
rectification only by qualified staff.
Refer to Chapter Contact Addresses
.