Hi
I live in a good-sized house with a complicated heating system. We have a combi boiler (vaillant ecotec plus) downstairs which feeds the kitchen and utility hot water. Upstiars we have a hot water cylinder for the bathrooms.
The thermostat downstairs controls the temp of the house/rads. This morning (whilst the rads were hot) it said the house temp was 23 and its set to come on when the house falls below 18 which it hasnt this morning. There was no flame showing on the therm which is what shows when the heating is on.
Yet all our upstairs rads and towel rails were hot this morning?!
Im not sure if its relevant but we had a powerflush on friday. All the rad thermostats had been left on max from where they had done that (they are usually much lower).
Ive heard somewhere that with our combi it has a function where if it heats the hw cylinder to temp rather than waste the extra excess energy it puts that heat into the rads. Anyone know of this? Could this be what has happened? Our hw is heated for a couple of hours each morning and evening.
Thing is that rad thermostats should be left open during summer shouldnt they to prevent them blocking. How can i do that if the boiler is going to turn them on when its 30 degrees in the house?!
None of the downstairs rads came on yet they are all on the same system.
Please solve this mystery
I live in a good-sized house with a complicated heating system. We have a combi boiler (vaillant ecotec plus) downstairs which feeds the kitchen and utility hot water. Upstiars we have a hot water cylinder for the bathrooms.
The thermostat downstairs controls the temp of the house/rads. This morning (whilst the rads were hot) it said the house temp was 23 and its set to come on when the house falls below 18 which it hasnt this morning. There was no flame showing on the therm which is what shows when the heating is on.
Yet all our upstairs rads and towel rails were hot this morning?!
Im not sure if its relevant but we had a powerflush on friday. All the rad thermostats had been left on max from where they had done that (they are usually much lower).
Ive heard somewhere that with our combi it has a function where if it heats the hw cylinder to temp rather than waste the extra excess energy it puts that heat into the rads. Anyone know of this? Could this be what has happened? Our hw is heated for a couple of hours each morning and evening.
Thing is that rad thermostats should be left open during summer shouldnt they to prevent them blocking. How can i do that if the boiler is going to turn them on when its 30 degrees in the house?!
None of the downstairs rads came on yet they are all on the same system.
Please solve this mystery
