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Message
Message shown on the display
No.
SYS:DI0.6 Alarm ozone ambient air sensor
7
SYS:DI0.7 Alarm feed gas pressure high
8
SYS:DI1.1 Alarm cooling water flow
10
generator low
SYS:DI1.2 Alarm fault power supply 24V
11
Manual_SMOevoPLUS_eng_01.2019.doc
Manual Ozone Generating System SMOevo
Description /
Possible Cause
Ozone concentration in ambient air
too high.
Ambient air sensor defective.
Sensor not in measuring
operation. Sensor in warm-up
operation.
Sensor close to end of lifetime
(check sensor)
Sensor has reached the end of
lifetime (change sensor)
Inlet pressure too high.
Incorrect wiring.
Cable break.
Insufficient cooling water supply.
Cooling water supply / discharge
not ensured.
Cable break.
Incorrect wiring.
Air accumulation in cooling water
line.
Flow meter not parameterized
PSU 24V internal fault message.
Automatic circuit breaker upstream
mains unit triggered.
Decrease at the power supply
output too high.
PLUS
Troubleshooting
Countermeasures
Search for leakage and rectify.
Calibrate ambient air sensor.
Replace, if necessary.
Refer to manufacturer's
manual.
Pressure reducer defective or set
incorrectly.
Acknowledge pressure switch.
Check cables and connectionss.
Check settings of flow monitor.
Refer to manufacturer's
manual.
Check for blockage of cooling
water side of ozone generator.
Check cables and connections
De-aerate cooling water line.
Parameterize the flow meter
Refer to manufacturer's
manual.
Check cables and connections.
Check automatic circuit breaker.
Check mains voltage.
Measure output current
page 139 of 179
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