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hot water running cold?

ferroli 30 combi bolier, hot water runs cold intermittently,whats the problem?
jiffy, February 2010
Could be a number of faults... could be diaphram, diverter valve, thermistor or heat exchanger scaled..
you need an engineer to check.

Andrew.. ANDREWS HEATING WESTON SUPER MARE, February 2010
link Click here to see other fixes for Ferroli.