when only hot water selected my radiators get hot. I have checked wiring and it all seems wired correctly for a y plan system according to honey wells diagrams. I have proved the 3 way valve is not sticking by wiring a new one in as a dummy and watching it move between ports. The valve irks fine when ch selected and closes port to hot water, when both selected it stays in middle but when hot water selected it moves over to cover ch port but not all the way and does not seal.
The programming unit used in system is a siemens rwb-9 and the dip switch is set to 16 on the back to allow both to be called for independently but when i have checked with multi meter there is 240v on terminal 4 on programmer which is ch on?
Is it possible that the siemens unit is faulty. For hw only i should have 240v only on terminal 3.
The programming unit used in system is a siemens rwb-9 and the dip switch is set to 16 on the back to allow both to be called for independently but when i have checked with multi meter there is 240v on terminal 4 on programmer which is ch on?
Is it possible that the siemens unit is faulty. For hw only i should have 240v only on terminal 3.