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phpaul

[h=2]vaillant eco tec pro 28 hw isues[/h]
hi all my boiler at home has just started ****ing about when hw is req
a s.53 code is displayed when introgated.
book says
s.53 appliance is within the waiting period of the operation block function
bue to water shortage (VL-RL spread too big) ?
system is fully presurised and has had new diverter valve fitted a few days ago. the dv used to buzz under heating usage for a few years when i checked under the dv motor it was leaking a bit so that was swoped the hw was faulty before this was changed and still is.
vl i think flow or flow temp thermister rl return thermister?
but cant see any reference in my book . will call vaillant in the am and its sods law but its my boiler at home :6:the mrs is map reading (looking for warpath) lol
ps gsr instaler
 
nope i fitted it in my hse in 08 . removed the 2ndry heat ex washed it throu with cleaning chem and boiling water..
now sorted. interesting ly when washing it throu i got lots of green junk out of the clean side.
 

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