Search with Wattson

Notifications

Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

IVT greenline HT Plus E - Circulation Pump Constantly On

Ground Source Heat Pump (GSHPs)

Last Post by Mars 2 months ago

2 Posts

2 Users

0 Reactions

273 Views

RSS

Wanderer

(@wanderer)

New Member Member

Joined: 2 months ago

Posts: 1

Topic starter 12/04/2026 9:10 pm [#2945]

Hi, I moved into a new house 6 months ago with an IVT Greenline HT Plus E. I have gone on a big learning curve to optimise usage. Including managing the temperature, enabling wi-fi (using husdata), managing the hot water. That has brought bills down a lot. But the radiator pump is constantly on (even when heating is off) and I’m not sure why. Is this to make sure pipes don’t clog up? Or is this something I can/should turn off? Many thanks

This topic was modified 2 months ago by Mars

Quote

Mars

(@editor)

Illustrious Member Admin

Joined: 5 years ago

Posts: 4686

12/04/2026 9:40 pm

Welcome to the forums.

Irrespective of which brand you have, the circulation pump running constantly when heating is off is not normal. It shouldn’t stay on in standby and that’s not an intentional “anti-clog feature”.

A few questions:

If you turn the controller to “off” (not standby) does the circulation pump still remain on?
When the unit is in standby, what does Husdata show for the heating circuit pump status?
Is this the original pump inside the heat pump unit, or has an extra one been added? I’m assuming there’s a buffer tank.

Get a copy of The Ultimate Guide to Heat Pumps

Subscribe and follow our YouTube channel!

ReplyQuote