mhs strata1 60

[aligorgon]

hi had abit of an issue with one of the above boilers in a childrens home,

the boiler has 2 burners the bottom one is fine but the top one is giving out off the scale co when istuck myfga in it.

took about an hr to purge the sensors afterwards.

i managed to get the lo fire from over 10k ppm down to the 20,s with the air/gas set screw but the hi fire mode wont come below 10k ppm. its a room sealed flue but i ID'd it anyway and capped gas to appliance.

they have hot water via andrews so its not too much of a worry at this time of yr but i was wondering i anyone else had come up againtst this issue with said boiler?


technical line you say... tried a multitude of times and failed to get through...

 

[aligorgon]

apologies for the spelling and grammer but these tablets arent that great for essays,

one other thing on hi fire the burner runs for maybe 40secs then cuts out. its not hi limit stat. fans are running, etc

 

[Dotty]

Inherited a warehouse with 2 of these in a few years ago. Both not working. I couldn't even make one good boiler out of the 2.

They got replaced.

 

[CES]

Replaced a pump in one of these a while ago. £350 odd for a Grundfos head on a plastic housing.

 

[Dotty]

Replaced a pump in one of these a while ago. £350 odd for a Grundfos head on a plastic housing.

I remember they were extremely expensive, about a grand for the pcb if memory serves....

 

[aligorgon]

i finally managed to get through to technical they suggested replacing the gas valve, at a mere 230 quid from parts center with company discounts...

 

[Dotty]

that's another thing! Two bloody gas valves!