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posted on 03 Jan 2025
Design Files for Vaillant Arotherm Heat Pump Installation
posted on 03 Jan 2025
This are diagrams for domestic hot hot water priority set up using:
– Vaillant system boilers
– Vaillant SensoComfort controls with VR 71 wiring ceters
– System with hot water cylinder, radiators and UFH
Vaillant Eco Tec Plus 624, 637 – fault, error code F.76
URBANPumbeRAdmin • 14 March 2015
Vaillant fault code F.76 is quite a worrying one. It means that main heat exchanger overheat protection had been activated. Vaillant Eco Tec range has a thermal fuse on top of the main heat exchanger that once activated breaks the circuit to prevent boiler from firing. That fuse is can not be reset and is […]
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Vaillant Eco Tec error / fault code F.54 and F.28
URBANPumbeRAdmin • 22 January 2017
If your Vaillant boiler is showing error code F.28 in very cold weather it is most likely that your condensation pipe is frozen outside. Pour hot water over the pipe and reset the boiler (Or turn it off and on at the spur switch). If possible put some pipe insulation on condensate pipework. Condensate pipework […]
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