hi all.
We recently installed a Viessmann B2HB 200 series boiler and a Viessmann vitocell indirect hot water tank. The heating side has been online and working for the last month. We commissioned the hot water tank yesterday, it worked fine for 24 hours. Now, when there is a DHW call on the boiler nothing happens. There is no fault on the boiler and it says the DHW tank temp is 5 degrees C, so it should be firing. The boiler fires perfectly for heating. We have bled and refilled the lines a few times to no avail. We have checked the time programming and every other conceivable setting as well.
Any input or suggestions would be greatly appreciated.
Thanks in advance
T.
We recently installed a Viessmann B2HB 200 series boiler and a Viessmann vitocell indirect hot water tank. The heating side has been online and working for the last month. We commissioned the hot water tank yesterday, it worked fine for 24 hours. Now, when there is a DHW call on the boiler nothing happens. There is no fault on the boiler and it says the DHW tank temp is 5 degrees C, so it should be firing. The boiler fires perfectly for heating. We have bled and refilled the lines a few times to no avail. We have checked the time programming and every other conceivable setting as well.
Any input or suggestions would be greatly appreciated.
Thanks in advance
T.