Hey, This is my First post and im affraid its similar to others regarding the Biasi Riva Compact M90e.24s
when the boiler trys to start you hear the fan start then just a clunk without it firing up, I've read the similar post to this and have tried all its suggests,
Although the fan was kicking in i tested its Electrical Resistance and thats fines,
I tested the Resistance's on the Air Pressure Swich - the Com-N.O and the Com-N.C. were both fine so the Pressure Switch hasn't gone, i checked the loop to see it was picking up a current and thats fine, however i will go and buy some new connectors and some cleaner tomorow as this may be a cause but as its sunday night cant go ne where,
I haven't checked the Venturi Device yet as i dont have a Diiferential Pressure gauge to check this but may get one to check if there not pricey and if you guys think it would help,
It did have the flue replaced and a service in june, ive tried to see if there are any blockages in the flue and couldnt see anything,
the only other thing the manual says to check is the Full sequence Device, which im going to have a look at now if i can make heads or teail of it,
any advice would be great as its been off a few days and had to buy electric heaters now for the kids bedrooms,Luckily we've been away with friends for a few days,
Regards
Dave
when the boiler trys to start you hear the fan start then just a clunk without it firing up, I've read the similar post to this and have tried all its suggests,
Although the fan was kicking in i tested its Electrical Resistance and thats fines,
I tested the Resistance's on the Air Pressure Swich - the Com-N.O and the Com-N.C. were both fine so the Pressure Switch hasn't gone, i checked the loop to see it was picking up a current and thats fine, however i will go and buy some new connectors and some cleaner tomorow as this may be a cause but as its sunday night cant go ne where,
I haven't checked the Venturi Device yet as i dont have a Diiferential Pressure gauge to check this but may get one to check if there not pricey and if you guys think it would help,
It did have the flue replaced and a service in june, ive tried to see if there are any blockages in the flue and couldnt see anything,
the only other thing the manual says to check is the Full sequence Device, which im going to have a look at now if i can make heads or teail of it,
any advice would be great as its been off a few days and had to buy electric heaters now for the kids bedrooms,Luckily we've been away with friends for a few days,
Regards
Dave