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25
FAULT CLEARANCE / TROUBLESHOOTING
Warning messages (W)
e.g. warning message: W01:4
►
first warning in the memory
►
"Service now!" or diaphragm replacement
Warning message
Possible cause
Corrective action
1 Pre-alar
m level
2 Step loss
4 Diaphragm replacement
8 Order ser
vice kit
16 High temperature, pump not switched off
32 Failed stroke sensor
█
Diaphragm has exceeded the maximum service
life of one year or the maximum operating
hours.
Contact
sera
and order diaphragm kit.
█
Pre-alarm level of the storage tank has been
undercut.
Fill storage tank with pumped medium.
█
Hub sensor malfunction.
Contact
sera
in the case of persistent malfunc-
tion.
█
Direct sunlight, ambient temperature too high,
technical defect.
Reduce ambient temperature, protect against
direct sunlight, take pump out of operation for a
short time to reduce temperature.
█
Overpressure, drive error
Check of the back pressure
█
Service time reached
Order and use service kit.
