Search results

There was no voltage on the gas valve solenoid (the two orange wires) so (after switching off the power) I removed the screws that held on the metal enclosure holding the electronics and transformer. Re-wired everything and I now read 24v AC and the boiler fires up. It appears fixed. Might...

It is an old Radiation (Glow-Worm) Fuelsaver 12 RS which has worked perfectly for many many years (including this morning) but this evening I returned to find the pump running but the radiators cold. The pilot light was lit but the boiler wasn't firing. I cycled the electricity. Pressed...

Thanks for the advice. I moved the switch to manual and it does allow the boiler to fire. Unfortunately it does not stay in place and when the timer activates it moves back to auto. I guess if I go away I could perhaps leave the CH on but the thermostat dialled down. I didn't really want to...

Boiler = Radiation FuelSaver 12 Control = HoneyWell Sundial Y-Plan Pump = Grundfos 15-50 Radiators = 7 singles with double entry valves Pipes = Microbore At the moment the CH is not getting hot when the system comes on. The Pump activates. The light on the control panel is on. The...

I dont understand what the valve would say to the boiler, it only has three positions (HW, CH, HW+CH). I can understand the timer telling the valve which position (in this case CH) and I can understand the room stat telling the boiler and pump to go because it's not warm enough, but I dont...

I dont understand how the diverter valve can tell the boiler/pump to turn off. I thought only the thermostat/timer could do that?

Let me set the scene: Boiler = Radiation FuelSaver 12 Control = HoneyWell Sundial Y-Plan Pump = Grundfos 15-50 Radiators = 7 singles with double entry valves Pipes = Microbore The entire system is many years old, it was here when I moved in over 2 years ago. Not had any problem from...