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Discuss Valiant ecotec plus 831 high/low fire settings in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Inverness

Plumbers Arms member
Plumber
Gas Engineer
Messages
710
hi guys, came across my first valiant combi. I couldn't figure out how to get high fire and low fire to check my ratios and co2.
There wasn't a manual.
Any advice?
I'm used to Worcester boilers.
 
Thanks Scott. Is it me but there's too much electronics digital buttons. I've looked at the manual and I still can't find how to set it to high n low fire?
thanks
 
I was close I managed to get to the installers level. And it displayed from 00 -80 odd. I stay this where I select 17 then I'm in the p codes?
 
● Press and hold the top 2 buttons above the + and - for 5 seconds
● On release scroll down using the + and - to installer level then press select
● 00 should appear, using the + button go to code 17 then press ok
● Scroll down using the + and - to test program (p) and then press select
● Scroll down to check programs and press select
● Using + and - scroll to p.01 (max) co2 reading 9.2 +/- 1.0
● Press select to come out of max and using + and - scroll to P.02 (min) select
● Co2 reading of 9.2 +/- 1.0
● When finished scroll back to user display
Please note that the minimum setting cannot be adjusted as this is auto adjusted dependant on the maximum being set correctly.
To set the maximum, locate the small black cap at the top of the gas valve and gently remove it to reveal a brass throttle.

Clockwise decreases the co2 and anti clockwise increases the co2.
 
● Press and hold the top 2 buttons above the + and - for 5 seconds
● On release scroll down using the + and - to installer level then press select
● 00 should appear, using the + button go to code 17 then press ok
● Scroll down using the + and - to test program (p) and then press select
● Scroll down to check programs and press select
● Using + and - scroll to p.01 (max) co2 reading 9.2 +/- 1.0
● Press select to come out of max and using + and - scroll to P.02 (min) select
● Co2 reading of 9.2 +/- 1.0
● When finished scroll back to user display
Please note that the minimum setting cannot be adjusted as this is auto adjusted dependant on the maximum being set correctly.
To set the maximum, locate the small black cap at the top of the gas valve and gently remove it to reveal a brass throttle.

Clockwise decreases the co2 and anti clockwise increases the co2.
Thank for your detailed information, appreciate your time. Thanks
 

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