Potterton Promax HE Plus lock out

Joined
25 May 2011
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Location
Hertfordshire
Country
United Kingdom
Hi Can any one offer any advice on why this boiler might be firing 3 times then locking out. We have checked, The Pump, The Tank, The filter at the back of the Boiler, All the valves and pipework around the Tank... All in good working order. The boiler sometimes comes on with the timer sometimes it doesnt. Some times it fires after the second attempt sometimes it doesnt and it goes to lock out. Sometimes it even comes on first attempt! But its not consistent and I am getting fed up of having cold water first thing in the mornings! Can anyone help - thanks
 
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get it on a service contract and forget to tell them it has an intermittent fault.
 
get it on a service contract and forget to tell them it has an intermittent fault.

Bad advice :rolleyes:

How old is it and when was it last serviced?

Get a local RGI to look at it
 
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knowing the lockout code would be a start. very often either the electrodes or the elctrode leads shorting to earth.
 

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