Last seen: Jul 4, 2025
From your quote here I understood that the heat pump wasn't operating at night as you have the house quite cool. In the documentation you got from yo...
@grumpidoc do you have glycol in your system if so you can deactivate the frost protection mode so the pumps won't activate at night.
Ideally you want it all to come on at the same time. When my hall thermostat calls for heat all of the UFH loops downstairs come on and all the rads ...
Yep that all makes sense the easiest solution is to remove all the actuators from the UFH manifold they should just unscrew them all loops will be ope...
So presumably the EPH thermostats are wired back to a controller near to the UFH manifold? Do you have a picture of that?
That will be the cause then, with only 1 thermostat calling for heat the water volume is too small it heats quickly and the heat pump has to turn off ...
That’s definitely cycling do you have UFH or rads regardless of which it would suggest you have only a very small proportion of the heating system cal...
They could be defrosts but unlikely at that Frequency. do you have the MELCloud app that can show the flow and retune temps for those times? There...
It’s an 8.5kw ecodan UFH and rads. WC set at 32C at 3C, 45C at -10C. Running on weather comp with thermostat set to 22C in the hallway. Once it g...
@ak2024 that is the HP cycling on and off 2/3 times an hour usually happens at milder outside temps when the flow temp is around 30C or less. I have ...
@boycey what you have there is really bad cycling 10 times an hour. if you increased the flow rate this will have only worsened it as it has less ti...
@boycey in milder temps you have to limit heating with the thermostats so that’s set at 22C to turn the heat pump off till it cools back down again.
Latest Posts
-
RE: BUS Grant, removal of all other heat sources
@rikiarn good post! I’ll make some enquiries tomorrow...
By Mars , 5 hours ago
-
Sorry to hear that @bruce. Sadly I’ve heard from multip...
By Mars , 6 hours ago
-
RE: Crystal Ball Time: Communal or even Area Energy Storage?
I am invested in a couple of listed energy storage fund...
By Old_Scientist , 8 hours ago
-
This might be useful for @bart From/p> "Warning: It...
By RobS , 9 hours ago
-
RE: Who's your electricity provider and what's your tariff?
That would be my biggest commitment -time to gain great...
By SUNandAIR , 16 hours ago
-
RE: Who has a V2G EV installation
As has been discussed on other threads, trying to justi...
By Majordennisbloodnok , 1 day ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
Thanks @mikeh. Then I will also go back to non smart ta...
By ChandyKris , 1 day ago
-
RE: Location of hot water isolation valve on cylinder
@transparent Thank you so much and very helpful. Earlie...
By rossowheels , 2 days ago
-
RE: Ecodan consuming 100kwh per day in new build!!!
It does indeed look like that, @skyefarmer. There is ...
By Majordennisbloodnok , 3 days ago
-
RE: Plug and play solar. Thoughts?
Have a read of my previous posts on so-called Balcony S...
By Lucia , 3 days ago
-
RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
"To tell you the truth, I don't know if HAL is homicida...
By Scalextrix , 4 days ago
-
The Importance of Radiator Balancing for Efficient Heating: Introducing the Flow Regulating Valve
It’s fascinating to watch how low-temperature heating i...
By Mars , 5 days ago
-
RE: Servicing Hitachi HP in rural Somerset
I'd give GreenGenUK a call or email them: sales@greenge...
By Mars , 5 days ago
-
RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 5 days ago
-
RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 5 days ago
-
RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 6 days ago
-
RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
By Majordennisbloodnok , 6 days ago
