ferroli 701

Hi all My trusty Ferroli 701CH is switching on /off. I checked the LED status and done a few basic with my multimeter checks and it’s tripping on the CH limit stat/over temp on heat exchanger. Would the CH flow temp cause this as it’s not adjusting/modulating the gas valve? I have tested...

Hi All Just came home and noticed had no HW or CH on my Ferroli 701. Gas pilot is lit Pressure is ok. PRV is not passing. EV has 1.2 Bar and is not releasing water from the shrader valve (so balloon ok) Fan is spinning at low speed (90v) and speeds up to full speed (230v) when called via HW...