Baxi Query and Which CH pump setting?

pjgtech · Jun 13, 2011

Hi all... I have a Baxi Back boiler (54/4) with fire front. The hot water is working fine, but yesterday as it was a bit chilly turned heating on, but boiler wouldn't stay on. It would ignite, stay alight for about 30 seconds, then go out. The room stat was turned up high.

So I left it, then today I tried it again, and it worked fine (heating and hot water).

I have lived here 15 years, I put this new Baxi in about 10 years ago, and I have it serviced every two years, and its always worked fantastic. So maybe yesterday was just a glitch?

Anyway, while checking things yesterday to try and get the heating working, I checked the pump in the FF airing cupboard (it was coming on and off, so no probs there) but I noticed it was on the lowest setting (settings are I, II and III). I changed this to II (2) today, but wondered what it should actually be on?

My house is bog standard two storey, three bed, two reception terraced house, room stat, cylinder stat, programmer near boiler, pump and 2 x 2 port valves to airing cupboard with HW cylinder, (gravity fed).

Should I ever have it on III (3)?

Thanx

Peter G (pjgtech)

wnjswozo · Jun 13, 2011

1or 2 depends on system layout,how close to f+e tank, if on return or flow,primatic,fully pumped,gravity all sorts really

diamondgas · Jun 13, 2011

pjgtech,

worked ok on 1 before, now it's working okay on 2 yeh? It works! Leave it be! Who gives a stuff whether it should be 1,2, or 3? Sounds like your pump is on its way out. when it does then replace it and return the pump to 1!

pjgtech · Jun 13, 2011

K, 2 it is then.

😎

tamz · Jun 13, 2011

Maybe better putting it back to 1. It worked fine there before. Turning up the pump speed can cause all sorts of system problems to start happening on an open system.

diamondgas · Jun 13, 2011

tamz said:
Maybe better putting it back to 1. It worked fine there before. Turning up the pump speed can cause all sorts of system problems to start happening on an open system.

I agree tamz but only if f& e are messed up yeh? Otherwise you just get noisy rads! lol ... well maybe less efficienct distribution of heat, reduction of condensing...... etc! But hey, we're talking limited knowledge here, lets not confuse for the sake of experience... :smoking: