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Troubleshooting
11
Logamatic 4321/4322 - Subject to technical modifications.
72
11 Troubleshooting
Have your heating engineer remedy all faults
immediately.
All system faults are displayed on the MEC2
programming unit.
Report the fault by telephone to your heating contractor.
Where necessary, set the module switches according to
the instructions in Chapter 12.
Provided your control unit is equipped with the above
modules, the following faults may be reported:
Burner fault boiler
Boiler temperature sensor
Outside temperature sensor
Heating circuit flow sensor
heating circuit 1 – 8 (if installed)
DHW temperature sensor
Boiler is cold
DHW stays cold
DHW warning
Remote control no communication with
heating circuit 1 – 8 (if installed)
Thermal Disinfection
Auxiliary temperature sensor
Heating circuit 1 – 8 (if installed) pump fault
DHW pump fault
DHW inert anode fault
Safety equipment fault
No connection to the BUS system
Address used more than once
External boiler fault
Flue gas sensor fault
Flue gas temperature exceeded
Address conflict slot 1 – 4 (if installed)
Wrong module slot 1 – 4 (if installed)
Unknown module slot 1 – 4 (if installed)
Function module not connected
No master control unit installed
Heating circuit 1 – 8 (if installed) in manual mode
DHW in manual mode
Boiler circuit in manual mode
Burner in manual mode
72


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