Recent content by lops8123

the CH pump is definitly, that is located within the plumbing unit. I have figured that out because if you turn of CH on the timer the pump turns of as well. Any other suggestion? Thanks

I think it does control all the water flow, it has a hot and cold water tank and I think one or 2 water pumps for HW and CH. The problem is if the boiler is heating hot water everything works fine when the boil is heating CH I hear the bubbling noise and I don't get any heat to the radiators

I don't know what this means but the type is Ideal Icos HE12 Condensing Boiler

I have got a very similar problem. Bled my system and since exactly the same. HW fine no CH. I can hear a bubbling noise inside the boiler. My boiler is conected to a Honeywell ST699 Timer and Thermostat and also a Harton Plumbing Unit. Anyone any advise