[davids3511]

It won't fireup when microbore hose is connected. I have used it for a few years with no problems and am aware I need to set the flow for it to work. It works fine if I use 1/2 inch hose but won't fire up at all with microbore connected. It used to work fine with microbore. Any ideas?

[Dave Willis]

Needs more flow so either turn the water dial up on the heater a bit or turn the flow up on your controller and make sure your strainer is clean.

[Smurf]

It won't fireup when microbore hose is connected. I have used it for a few years with no problems and am aware I need to set the flow for it to work. It works fine if I use 1/2 inch hose but won't fire up at all with microbore connected. It used to work fine with microbore. Any ideas?

Does it work if you connect it to a garden tap instead using a garden hose?
You obviously got gas in the bottle and the gas line connected (switched on) too?
Have you also checked the batteries are ok?

[Smurf]

I've just re-read your post so why not just use 1'2 inch hose...sorted 

[davids3511]

Needs more flow so either turn the water dial up on the heater a bit or turn the flow up on your controller and make sure your strainer is clean.

I've had the flow up to 99 and its made no difference, once the microbore goes on it won't work. What's a decent replacement? I tried one of those £60 ones on eBay with no vent and it was terrible, it only kicked in half the time. What are the 8l ones like, any problems with the flow we put through them?

[the king]

maby try cleaning or replacing the dirpraham in ur pump as when they get old u do lose a bit of pressure just a thault !

[Smurf]

Needs more flow so either turn the water dial up on the heater a bit or turn the flow up on your controller and make sure your strainer is clean.

I've had the flow up to 99 and its made no difference, once the microbore goes on it won't work. What's a decent replacement? I tried one of those £60 ones on eBay with no vent and it was terrible, it only kicked in half the time. What are the 8l ones like, any problems with the flow we put through them?

If it works/fires up with 1/2 inch inlet and outlet hoses then it's sounds to me defo just a flow problem.

Air in the system and/or restricted flow will defo stop the heater firing up so check for both. 

Set the heater to summer setting, min flow and min temp without the hose reel connected then see what happens and let us know.

[dave f]

try moving flame failure  probe closer to flame

[davids3511]

try moving flame failure  probe closer to flame

What is that? I'm not afraid to open it up but what am I looking for.

[Dave Willis]

When you said it used to work ok - was that with microbore?

[davids3511]

When you said it used to work ok - was that with microbore?

Yes, it was fine with microbore for years.

[dave f]

when you open it up you will see a  match thin probe next to the burner if the wind blows the flame out it cools  down  and knocks gas off.but depending how old it is it can some times distort a fraction just enough so as not to get hot resulting in it difficult to light