gas working fine boiler just wont fire up!
just had plumber out and he said heat exchange leaking water and problem inside there but he has never worked on this type before!
Hi
boiler broke, turn H/W OR C/H on an boiler wont heat up just cold water, error code 501, 502 come on the display which mean ignition failure on 1st/2nd attempt plus leaking some water! :?
HELP!!!