Below is an extract from the MIM-E03CN manual, which is the recommended controller for use with your heat pump.
Do you only have the one water pump?
Is your system still short cycling at the same frequency?
One possible problem could be incorrect settings within the controller. If possible go into the installer menu and make a note of any parameter settings that you can find, and then post the results.
@derek-m I have two pumps I believe. You can see both pumps in this pic.Â
I am still getting short cycling, yes.Â
What settings do you mean, sorry?Â
It's entirely possible the settings are incorrect, I've had to wing it to get as far as I have.Â
What is the temperature setting of the two thermostats, and what is their make and model?
Turn both thermostats up to 25C and see if this has any effect on the cycling.
@derek-m okay, I'm not at home at the moment. I'll do it later and report back. I've made various adjustment to water law which is Samsung for WC. The temp in the house is nice and the COP is acceptable too. Just the cycling. Thanks again
The Joule Samsung instructions are available on line, they don’t use a PWM pump. They have a separate interface PCB that comes after the MIM. I’ll see if I can find a link.
I would be inclined to get the installer to wire/plumb it up as per the Midsummer wholesale instructions that give details on how to fit a PWM pump and use the Samsung controller as the room stat.
Off grid on the isle of purbeck
2.4kW solar, 15kWh Seplos Mason, Outback power systems 3kW inverter/charger, solid fuel heating with air/air for shoulder months, 10 acres of heathland/woods.
My wife’s house: 1946 3 bed end of terrace in Somerset, ASHP with rads + UFH, triple glazed, retrofit IWI in troublesome rooms, small rear extension.
- 26 Forums
- 2,131 Topics
- 46.8 K Posts
- 38 Online
- 5,656 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Mitsu Wireless Controller and MelCloud
Well it has now become obvious that the installation of...
By DavidAlgarve , 2 hours ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@heat-pump-newbie as I suspected. I measure/monitor my ...
By Old_Scientist , 17 hours ago
-
RE: Say hello and introduce yourself
Whilst you're busy installing services (pipes and wires...
By Transparent , 21 hours ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
@editor I know it was formally announced at Ish the oth...
By PatrickVito , 2 days ago
-
@moman0311 welcome to the forums. I've received your em...
By Mars , 2 days ago
-
RE: Anyone still weathering it out with Agile?
Yes, but now try finding a working phone box….
By Majordennisbloodnok , 3 days ago
-
RE: Thermostat for Ideal Logic Air with 3 zone support
No harm at all in plumbing it as 3 zones, I would have ...
By JamesPa , 3 days ago
-
RE: ASHP heat output monitoring
@carlo I see there is a discussion in Facebook user gro...
By Tim441 , 3 days ago
-
RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
MCS have set a potential trap in the new version of MCS...
By JamesPa , 4 days ago
-
RE: Who has a V2G EV installation
General comment on battery care... I guess if ev is on ...
By Tim441 , 5 days ago
-
RE: How much am I ‘saving’?
@old_scientist like for like comparisons are almost imp...
By Tim441 , 5 days ago
-
RE: Who's your electricity provider and what's your tariff?
@old_scientist There is an option in the Tesla app that...
By Toodles , 5 days ago
-
RE: Octopus Cosy & Octopus EV + bidirectional smart tariff, together. What, eh?
@old_scientist me too. Just installed my new heat pump ...
By Eliuccio , 7 days ago
-
RE: Is your heat pump insured?
Yup just spoke to Privilege to inform them of my impend...
By Scalextrix , 7 days ago
-
RE: Forum updates, announcements & issues
Just to keep everyone in the loop, as the site continue...
By Mars , 1 week ago
-
RE: Fast DHW setting on Midea (Clivet) heat pump
@simon-w, is this something you could potentially assis...
By Mars , 1 week ago
-
RE: Share Your Experiences with Heat Pump Manufacturer Support
Fwiw I called my installer out for the first time a few...
By JamesPa , 1 week ago
-
RE: Long term efficiency degradation
@jamespa yes as I thought thanks. We have a reaso...
By Scalextrix , 1 week ago
-
RE: Sunamp Thermino Heat Battery
@jamespa A few days after the installation had been com...
By Toodles , 1 week ago
-
RE: Planning Permission May 2025
Fair enough. I have read the legislation and MCS020a ...
By JamesPa , 2 weeks ago