I replaced an old landis and gyr programmer with a siemens rwb29 - no problem. Now one bedroom radiator is cold, altho pipe to it is hot, and one downstairs rad is tepid.
I wasn't sure which position to put the dipswitch on the back regarding gravity/pumped. I've now tried both positions, but it doesn't make a difference. Any ideas, please folks?
I wasn't sure which position to put the dipswitch on the back regarding gravity/pumped. I've now tried both positions, but it doesn't make a difference. Any ideas, please folks?