Discuss worcester greenstar ri Y-Plan in the Central Heating Systems area at ElectriciansForums.net

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davek

Hi all
been called out to a boiler replacement with the above boiler. The problem is it wont run on heating only. have check wiring and all I can spot is that from controller there is no wire going from HW OFF to cylinder stat terminal 2 and grey on valve. Any thoughts and no spare cores in original wiring.
regards
Dave
 
spoke to Worcester apparently the lp on the boiler need run direct to pump so will give it a try tomorrow,
cheers
Dave
 
Hi.... On a y-plan you need the cable from the hw off connection on the programmer to the grey on the valve and number 2 on the cylinder stat to power the valve into heating only... You will not get it to work correctly in another way
 

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