Cosmo CFWME Montage- Und Bedienungsanleitung Seite 43

8.2 Troubleshooting
If an error message is output, it appears on the control unit display.
Please observe the corresponding instructions for the control unit.
Malfunction
Pump noise
Insufficient tapping quantity
Insufficient tapping
temperature
Drinking water does not heat
up
8.3 Decommissioning
If the COSMO CFWME is decommissioned for a prolonged period, the power supply must be
disconnected.
For final decommissioning of the COSMO CFWME the power supply for all of the corresponding
system components must be disconnected; all of the relevant pipes and components must be
completely drained.
The decommissioning, dismantling and disposal processes should only be conducted by
qualified, specialist personnel. Components and materials must be disposed of in accordance
with the current applicable regulations.
Possible cause
Air in the system
Insufficient water pressure
Calcification in heat
exchanger
Incorrect adjustment on the
control unit
Excessive pressure loss in the
piping on the heating side
Control unit not in operation.
Air in the system.
HW flow sensor not
connected correctly, or
defective.
Heating flow temperature
sensor not connected
correctly or faulty.
Pump faulty
Flow rate sensor defective
Remedy
Bleed
Check pressure, increase if
necessary
Decalcify/replace
Check settings
Check the piping, change if
necessary
Check control unit
Bleed
Check, replace if applicable
Check, replace if applicable
Check, replace if applicable
Check and replace if
applicable
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