Wilo Tagus Vac 7 Instrucciones De Instalación Y Funcionamiento página 48

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Nr Message
18 Next
maintenance
19 TP motor
20 Voltage sensor
21 No date/time
22 Flash error
23 Flash error
24 Flash error
25 Gas sensor
defective
26 Gas sensor,
undervoltage
27 Gas sensor,
overvoltage
28 Recurring indi-
cation of
gas value "0"
48
Description Reset
Next maintenance due A
Motor protection signal A
(bimetal contact of
pump) is active (open)
Sensor voltage too low B
RTC has no valid time A
information
Read error Flash B
Write error Flash B
Reprogramming error B
Flash
Gas sensor defective A
Signal during A
measurement <4mA
Signal during A
measurement >20mA
Several successive A
small gas values during
measurement
Possible cause
• Maintenance date reached
• Pump overheated
• Printed circuit board defective
• Time setting has got lost after
prolonged disconnection from power
supply
• Hardware/software problem
• Hardware/software problem
• Hardware/software problem
• Malfunctions in measuring signal,
possible faulty cable connection to SCU
• Sensor not connected, cable damage
• Short-circuit in cable, signal too large
• Vent blocked/not working correctly
A Necessary, reset possible within normal use
(control restarts after resetting).
B No duty, automatic reset within normal use.
Troubleshooting
• Carry out maintenance and enter
'Maintenance done' (Service menu)
• Check temperatures
• Check free running pump
• Replace control unit
• Enter time and date again
• Get in contact with service department
• Get in contact with service department
• Get in contact with service department
• Check connection to controller,
Exchange sensor if necessary
• Test cable connections, test vent
device, if necessary clean the filters
• Check and clean vent device
03/2024