Baxi 80he instant

[buckley plumb]

Did gas cert on this yesterday. 2,8m horizontal flue. It gas rated ok and flame was good. Put analyser in and off the scale
So put in air test point and products of combustion picked up. Found boiler flue elbow seal pushed right into elbow not sealing fitted it as it should be and got aps fault. Opened front to let air in to start boiler and fitted back quick. All readings fine. Just aps fault. Replaced aps but still the same do these suffer weak fans.

 

[Billy Bob Bob]

Did gas cert on this yesterday. 2,8m horizontal flue. It gas rated ok and flame was good. Put analyser in and off the scale
So put in air test point and products of combustion picked up. Found boiler flue elbow seal pushed right into elbow not sealing fitted it as it should be and got aps fault. Opened front to let air in to start boiler and fitted back quick. All readings fine. Just aps fault. Replaced aps but still the same do these suffer weak fans.

yes,as it ages,can be either aps or fan,fan always suspect on long flue runs,from memory max 5 meters on a 80 he including resistance of fittings so fan cant cope if its on its limit as it ages

 

[GrahamM]

Did you make sure no flue restrictor?

I would try stripping out top end and cleaning fan and venturies. Wee bit bearing oil for fan. Wash through heat exchanger. Check flue in full.
If still no luck after that then prob fan had it.

 

[buckley plumb]

Did you make sure no flue restrictor?

I would try stripping out top end and cleaning fan and venturies. Wee bit bearing oil for fan. Wash through heat exchanger. Check flue in full.
If still no luck after that then prob fan had it.

Oiled fan and cleaned venturi. Not flushed exchanger worth a try

 

[buckley plumb]

yes,as it ages,can be either aps or fan,fan always suspect on long flue runs,from memory max 5 meters on a 80 he including resistance of fittings so fan cant cope if its on its limit as it ages

Been back today. Landlord had called baxi on fixed price repair as diverter is passing to htg. They didn't do anything just left a note saying they suspect the flue has come apart. Been and removed flue elbow and can see flue is clear and in tact as before proved flue is ok by easing cover a little so aps makes then closing. Did analyser in both combustion and air points and ok prooving flue. Just think engineer didn't want the hassle. Looks like I will be getting a fan