Central Heating

Piped Underfloor Heating Pump Settings

Anonymous user 03/03/2024 - 3.44 PM

Hello, I have a piped underfloor heating system in the kitchen. The valve/mixer/pump unit is under the stairs. It has a number of settings and a digital display. Settings include PP1, PP2, CP1, CP2, I, II, III, Auto, a number followed by W, and what looks like a night mode setting. When I leave the settings on Auto, the W number drops to approx 7. However, when there is demand (via the thermostat) afor the underfloor heating, it will not heat up, and the W stays at 7. When I change the setting to III, everything fires up, I can hear the pump working, and the W increases to 45, and the floor heats up well. However, when there is no demand, the W stays at 45 and I can hear the pump continue to run constantly - not very efficient. Any ideas what I need to do here? I have a picture: https://photos.app.goo.gl/tLaNr5wUX9LYvSFm6