Last seen: Feb 4, 2026
@adamk You may want to get Vaillant to deal with it under warranty rather than the installer. In my case the installer opened a case with Vaillant. A ...
@adamk In my experience the gap widens when the outside temperate increases, so could be that. Or maybe just down to the way the swapped sensors have ...
I agree and that’s why I don’t believe a lot of the high COPs that get reported on Vaillant units. It’s a shame Vaillant don’t calibrate th...
@adamk This shows that the sensors in your heat pump are not accurate. A not uncommon problem for Vaillant units. Therefore the COP reported by the un...
@adamk You can get an idea of if your flow and return sensors are accurate by measuring the difference between flow and return temps around 10 minut...
Latest Posts
-
RE: What determines the SOC of a battery?
@batpred I didn't write the Seplos BMS software, I a...
By Bash , 8 minutes ago
-
RE: Electricity price predictions
Sorry to derail this thread ‘slightly?’ but back to the...
By Toodles , 17 minutes ago
-
RE: Humidity, or lack thereof... is my heat pump making rooms drier?
Without knowing it, @andrewj, you've laid down the gaun...
By Majordennisbloodnok , 36 minutes ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
@tasos and @cathoderay thanks. I have some history grap...
By benson , 41 minutes ago
-
I am having my existing heat pump changed to a Vaillant...
By trebor12345 , 1 hour ago
-
Our Experience installing a heat pump into a Grade 2 Listed stone house
First want to thank everybody who has contributed to th...
By Travellingwave , 2 hours ago
-
RE: Setback savings - fact or fiction?
@cathoderay The input power is largely determined by...
By RobS , 2 hours ago
-
RE: Solis inverters S6-EH1P: pros and cons and battery options
Just to wrap this up here for future readers: The S...
By Batpred , 4 hours ago
-
RE: Struggling to get CoP above 3 with 6 kw Ecodan ASHP
Welcome to the forums.I assume that you're getting the ...
By Sheriff Fatman , 4 hours ago
-
RE: Say hello and introduce yourself
@editor @kev1964-irl This discussion might be best had ...
By GC61 , 6 hours ago
-
@painter26 — as @jamespa says, it's for filling and re-...
By cathodeRay , 10 hours ago
-
RE: Oversized 10.5kW Grant Aerona Heat Pump on Microbore Pipes and Undersized Rads
@uknick TBH if I were taking the floor up ...
By JamesPa , 20 hours ago
-
RE: Getting ready for export with a BESS
I would have not got it if it was that tight
By Batpred , 22 hours ago
-
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump
@judith thanks Judith. Confirmation appreciated. The ...
By DavidB , 1 day ago
-
RE: Recommended home battery inverters + regulatory matters - help requested
That makes sense. I thought better to comment in this t...
By Batpred , 1 day ago
-
Bosch CS5800i 7kW replacing Greenstar Junior 28i
My heat pump journey began a couple of years ago when I...
By Slartibartfast , 1 day ago
-
RE: How to control DHW with Honeywell EvoHome on Trianco ActiveAir 5 kW ASHP
The last photo is defrost for sure (or cooling, but pre...
By JamesPa , 1 day ago
-
RE: Plug and play solar. Thoughts?
Essentially, this just needed legislation. In Germany t...
By Batpred , 1 day ago
-
RE: A Smarter Smart Controller from Homely?
@toodles Intentional opening of any warranty “can of wo...
By Papahuhu , 1 day ago
-
RE: Safety update; RCBOs supplying inverters or storage batteries
Thanks @transparent Thankyou for your advic...
By Bash , 1 day ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: Odd_LionManufacturer: SamsungModel: Samsu...
By Odd_Lion , 1 day ago
-
RE: Configuring third party dongle for Ecodan local control
Well, it was mentioned before in the early pos...
By F1p , 2 days ago
-
RE: DIY solar upgrade - Considering adding more panels
I know this is a bit old, but it made me wonder what co...
By Batpred , 2 days ago
