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!
Last seen: Jan 16, 2026
Thank you all for your help with trying to get this sorted. Just a quick update to close this thread off incase anyone has similar in the future. I...
@ashp-bobba Yeah I'll give it a go, will check filters as well. Thanks for your suggestions. I'm hoping it's something repairable, no heating in ...
@ashp-bobba It has been recently serviced, October 25. I did call vaillant & installer but shut until Monday I didn't try with water but it ...
@jamespa Going off those faults it's looking more towards a blockage of some sort. I had a look at the diverter valve, it's a honeywell v4044c, I...
@jamespa On the live monitor I'm getting "Heating compressor blocked" "Evaporation temperature too low" Also had a new fault code this mornin...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Heat pump branding. Clever, contemporary… or a bit too much?
I think Heat Geek have done an amazing job on their bra...
By Tomtheheatingengineer , 5 hours ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
I have just had 3 heat loss surveys, one by heat geek o...
By David , 6 hours ago
-
RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
I think that's the key question. After all inverter uni...
By Prunus , 7 hours ago
-
RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 8 hours ago
-
RE: How should the Boiler Upgrade Scheme be reformed?
A unit which uses water to transfer the heat/chill from...
By Temperature_Gradient , 8 hours ago
-
RE: Renewables & Heat Pumps in the News
With regards to the BUS grant raid, I gave it more thou...
By ASHP-BOBBA , 9 hours ago
-
RE: Why are ASHP installs so expensive?
The whole system seems to work on the basis of...
By ian33a , 9 hours ago
-
RE: Missing flow temperature in Heat Geek proposal
Good plan. If you can get half hourly meter readings a...
By JamesPa , 14 hours ago
-
RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
@editor Most certainly. The heat pump was an ideal s...
By Abernyte , 14 hours ago
-
Although regulations may well vary from country to coun...
By Majordennisbloodnok , 15 hours ago
-
RE: Does anyone have experience of a smart water meter?
Yep I caught our slow leak from a £100 bill rise 8)
By EtchedPixels , 15 hours ago
-
RE: Do You Need a Buffer Tank or Low Loss Header for Underfloor Heating in a Large Property?
@jamespa in some cases, failing the Turing test might b...
By GrahamF , 18 hours ago
-
RE: Passiv Smart Thermostat - Help & Forum Support
@energystoragetech The heat capacity of some...
By JamesPa , 20 hours ago
-
RE: tepeo ZEB UK Support & Info Thread
Sorry you are correct, I was remembering figures from t...
By JamesPa , 1 day ago
SPONSORS
