Help - no power at boiler

Joined
12 Mar 2011
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Location
Belfast
Country
United Kingdom
I have no power at the boiler. have checked fuses ok. It would appear the Sunvic tlx room stat is not getting signal to the boiler. when i turn the stat up until it clicks i can see a spark between the contacts. Should the contacts be closed when the stat needs heat or do they stay open
 
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Without full details of your system I cannot make any comments.

It needs testing with a meter by someone competent to use a meter for testing CH systems.

Tony
 
Sunvic is arguably the worst brand of control, replace it with a proper one.
 

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