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TURBOmax Plus

Draw hot water at high rate

Does green warmstart

indicator flash?

Yes

Check hot water flow rate and temperature.

Compare with technical data, if flow is not

sufficient check incoming main and cold water

filter.

Normal operation carry out

electrical safety checks

Check cold water inlet pressure is

sufficient and that cold water inlet

filter is clear

Check cold water inlet is fully open

and adjustment is at maximum

flow rate

Does green warmstart

indicator flash now?

Check/Clear impeller in

Aquasensor, replace if necessary

Check/replace hall sensor

Replace electronic board

Does hot water indicator

glow/flash now?

Does green warmstart

indicator flash now?

Yes

Sheet G

Check D.H.W operation (TURBOmax Plus only)

FAULT FINDING

☞ TURBOmax Plus only

Vaillant TURBOmax Plus SERIES User Manual

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