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Mend Volkera UNICA HE Green Heating Temperature Fault

Volkera UNICA HE Green flashing numbers??

The led numbers are normally lit constantly green showing the current water temperature, eg 60 (60 degrees c) however only recently they are now flashing all the time, the boiler still works OK, and there is no red fault light on, any ideas anyone?

Len Wilson
November 2011
VolkeraVolkera UNICA HE GreenHeating, Home Heating SystemsHeating Temperature Fault

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Volkera UNICA HE Green - Flashing Display