Ravenheat CSI 120 Combi Boiler 04 Fault Code
Posted: Sat Oct 03, 2015 6:05 pm
I have a ravenheat csi120 combi boiler. 04 fault comes on only when the shower is used . Water goes cold after a few minutes in the shower .When the bath is used no fault happens . Any ideas as to what is wrong. Thanks in advance.
Dave
Dave