Wilo Tagus Vac Instrucciones De Instalación Y Funcionamiento página 20

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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
indication of
gas value "0"
26
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 N ecessary, 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
WILO 07/2018