boiler problem MAIN HE 30

[ieeexem]

hi
i have problem my boiler, problem is hot water when we r truning hot water on boiler
going off and on it self, water hot few sec then cold hot cold .
can any body tel me what's wrong with the boiler .

boiler is MAIN HE 30
18 to 20 months old

thanks

 

[Mark raig]

Had a problem similar to this myself turn out to be a blocked filter on the cold water inlet is the cold water / hot water pressure good

 

[ieeexem]

thanks for reply
water pressure is good
and heating running fine
only hot water have problem

i think may b diverter problem

 

[REDSAW]

diverter, still under warantee 2 year so call them in.

 

[oldplumber]

main warrantee for he is only 1 year / 15months, put one in this week, baxi 105he by any other name but cheaper

 

[Puddle]

think maybe boiler fitted to a dirty system and plate heat exchanger getting blocked !!!

 

[ieeexem]

thanks for reply