Last seen: Jan 12, 2025
Hi Derek, What a result!!............Changed the pump connector to CNP4 and pump no longer runs unless required by DHW call for heat.........proved i...
@DerekM Hi Derek, I have not yet tried swapping the DHW pump connection over although as you have said and from looking through all online manuals...
@derek-m Thanks for your advice Derek.....my system is out of warranty with the installer so I think I will come clean and let them know I have fou...
@harriup The wiring is not correct and the DHW pump is running all the time the primary pump is running....see latest post to @derekm I only run t...
Hi Derek, Been back up in the loft (Big mistake that was)! , and traced cables from pumps to the FTC board As we suspected the FTC is not wired a...
Hi Derek....no wonder you were not at your peak with the amount of input you contribute to the forums. Your assumption of my query could be correct ...
Agree it looks a bit like a rat's nest!! I think I differ in that I have an external plate heat exchanger (not the internal coil )and the dedicated ...
Derek....if you zoom in I think the model no's can be seen but I can clarify the auto pump is UPM3 Auto L(think this is the heating circuit pump)........
The unit came all prewired and plumbed from Mitsubishi so it sounds like it has to be as you have said...I think I will give mitsubishi a call on this...
Hi Derek, Photos as requested, the pump without any obvious manual control is the one adjacent to the one with LED display(the one that data sheets ...
@Sun&Air...thanks for your comments......a lot of water has passed under the bridge since I posted back on page 5 so things have got a bit disjoi...
@derekm and everyone else 😄 I said that I would investigate in more detail what is happening with my full mitsubishi packaged system pumps and have ...
- 22 Forums
- 2,073 Topics
- 45.5 K Posts
- 39 Online
- 3,354 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: Solar Power Output – Let’s Compare Generation Figures
510kWh of solar PV from my 4kW Hyundai panels and SMA S...
By JulianC , 13 hours ago
-
RE: Is my Samsung heat pump working too well?
Thats in itself is interesting. I have a Vaillant heat...
By JamesPa , 15 hours ago
-
RE: Jokes and fun posts about heat pumps and renewables
@transparent Not a swell season then ☹️
By Toodles , 18 hours ago
-
RE: 5 Star Service from Havenwise
Oh good! I was wondering when/if you might pick them ...
By Transparent , 2 days ago
-
RE: Air Changes per Hour - ACH and the MCS requirement
update - my old installer insisted on a heat loss of 11...
By MatWin , 2 days ago
-
I agree it's not very helpful. Generally, the max heat ...
By Old_Scientist , 2 days ago
-
RE: Commencing on an ASHP Installation Process
I think therein lies the problem. Ratio of quotes to i...
By JamesPa , 3 days ago
-
RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think
Hive and most other smart thermostats don't play well w...
By JamesPa , 3 days ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
Thanks for the input. I've been running various experim...
By Grahamh-uk , 3 days ago
-
RE: Radiators downstairs are cooler at the bottom after ASHP install
@melonbuffet Hi, this sounds great is you are getting 5...
By ASHP-BOBBA , 3 days ago
-
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
I believe there's another reason that network upgrades ...
By Transparent , 3 days ago
-
RE: What’s the modern take on advised types of insulation?
@jeff I am sorry @jeff if I have misunderstood what you...
By Toodles , 4 days ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@editor Cobbler’s Mantra that!
By Toodles , 4 days ago
-
RE: Renewables & Heat Pumps in the News
Australia Blue, the first wind farm in Western Victoria...
By Morgan , 5 days ago
-
RE: Flow rate discrepancy between ASHP and manifold
That's useful thanks, I hadn't seen that table before. ...
By AshRolls , 5 days ago
-
In principle I agree, @johnmo, but with provisos. The...
By Majordennisbloodnok , 6 days ago
-
RE: Heat pump installation and BUS Grant timings
@jamespa Thats how I understood it too. 🙂
By ASHP-BOBBA , 6 days ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
@sallyl That sounds about right if they are re-filling ...
By Brendon Uys , 6 days ago
-
I wouldn't be so sure about that. Heat pump designers ...
By JamesPa , 7 days ago