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Jock Spanners

Plumbers Arms member
Plumber
Gas Engineer
Nov 29, 2009
208
72
28
Member Type
Heating Engineer (Has GSR)
Evening all,

I tried Baxi technical today but the guy I spoke to wasn't able to help me. I've just fitted a 630 and decided to fit a Multifit weather compensator (for the first time) in line with the new Part L regs. I chose the standard one - not the flue mounted model. When I tried to set it to curve 50 the display stayed on zero. Should this not have changed? I was also surprised to see an earth on the low voltage 4 terminal. I left it in the curve 50 position but the customer called me back tonight. The heating flow simply isn't getting hot enough to warm the radiators. I'd appreciate any advice on why this is.

Jock
 
From my friend at Bati: "The earth is there to shield the wire if ran next to mains cables.
The temperature selector should have allowed you to set the curve between 00 & 90. If it didn't allow this it is down to a PcB parameter issue, we have had a small batch of PcBs where the parameter for the outdoor sensor has not been enabled, so the boiler doesn't identify the sensor has been fitted, You will need to book a service call so that a Baxi engineer can sort it out."
 
Your right that's stupid, so some 630s arnt compactable out the box

IMG_3538.PNG
 
Just had exactly the same today with an IFOS on a 630. Thanks for this, I thought it was something I'd done! :-D
 

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