I would like some help to solve a problem with my non condensing Ariston combi 27 MFFI, it could be over 4 yrs old. It works perfectly on CH but recently on DHW after about, say, 3 minutes the burner shuts off when the 70 temp. LED has been on for about 15 seconds. The 70 light goes off for about 30 seconds then the burner lights again...and so on.
I have done a rough check on the diverter valve by feeling the heating outflow pipe when this happens (heating off) and it remais cold so I think this one is operating OK. Water flow is fine.
Advice gratefully received.
I have done a rough check on the diverter valve by feeling the heating outflow pipe when this happens (heating off) and it remais cold so I think this one is operating OK. Water flow is fine.
Advice gratefully received.