Hi,
Our heating stopped working today. We've got a Veissmann boiler that's under a year old, and an older Megaflow cylinder, and two diverter valves (all about 10 years old). We also use a Hive thermostat.
When I boost the hot water with Hive, the receiver near the boiler shows it's calling for hot water. The diverter valve that controls the hot water seems to work fine, turning on the pump and causing the boiler to fire - heating hot water for the tank with no issues.
But, when I try to boost the heating, even though the Hive receiver says it's calling for heating, the boiler doesn't fire up. I think the problem might be with the diverter valve for the heating. It looks like it's not getting power when the heating is on, because the manual/override lever on the side has resistance, like it is springy (de-energised). Just switching the valve alone to manual doesn't do anything. But when I fiddled with the lever, I was able to get the pump start up briefly for a half a second before it cut out along with the boiler.
I've booked a heating engineer to come over on Tuesday. In the meantime, I found that if I turn on the hot water and then lock the heating diverter valve in the manual position, the radiators heat up. It seems like it's making the water meant for the tank go through the radiators instead. My question is: Is this a safe temporary fix to keep the house warm until the engineer comes on Tuesday?
Our heating stopped working today. We've got a Veissmann boiler that's under a year old, and an older Megaflow cylinder, and two diverter valves (all about 10 years old). We also use a Hive thermostat.
When I boost the hot water with Hive, the receiver near the boiler shows it's calling for hot water. The diverter valve that controls the hot water seems to work fine, turning on the pump and causing the boiler to fire - heating hot water for the tank with no issues.
But, when I try to boost the heating, even though the Hive receiver says it's calling for heating, the boiler doesn't fire up. I think the problem might be with the diverter valve for the heating. It looks like it's not getting power when the heating is on, because the manual/override lever on the side has resistance, like it is springy (de-energised). Just switching the valve alone to manual doesn't do anything. But when I fiddled with the lever, I was able to get the pump start up briefly for a half a second before it cut out along with the boiler.
I've booked a heating engineer to come over on Tuesday. In the meantime, I found that if I turn on the hot water and then lock the heating diverter valve in the manual position, the radiators heat up. It seems like it's making the water meant for the tank go through the radiators instead. My question is: Is this a safe temporary fix to keep the house warm until the engineer comes on Tuesday?
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