New Vaillant ecotec plus 418 - hot water not hot enough?

Joined
11 Nov 2007
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London
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United Kingdom
Just had this installed and I'd rather not get the bloke back without making sure I'm not doing something wrong. The heating has been off and the hot water set to continuous. The boiler hot water control and the cylinder stat are set to 65C. The pump is cycling off and on every ten minutes or so. But the hot water doesn't seem hot enough to me - about 44C. Any ideas?
 
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could be anything from faulty cylinder stat to faulty pcb not registering the tempture
 
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the hw dial on boiler display does nothing (unless vr65 and vrt360/vrc430 fitted). turn the dial below the hw dial (picture of a radiator) to fully clockwise-75deg c.
 
Thanks dangermouse, that was it. Getting nearly 60C now. The supplied instructions could stand being a lot clearer.
 

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