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ivanhoew
@ivanhoew
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Joined: Jan 13, 2025
Last seen: Dec 29, 2025
Profile Activity
Topics: 3 / Replies: 24
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Reply
RE: are there internal electric heaters ?

i agree david , that sounds like a water pump sort of draw. maybe its just that ashp make in the article that does it ..

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: are there internal electric heaters ?

Thanks morgan , i can't find any flat bits in my graphs .. probably because i suspect its about 6x too big , i can see looking at the amps line ,...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
are there internal electric heaters ?
11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 4
Views: 722
Reply
RE: Water pump operation choices on my Harnitek heat pump

ThanksTP , no, no buffer tank, one pump . i log the pwm on my inbuilt harnitek logging SW . RE: "Do you have: the commissionin...

11 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: water pump usage

its a harnitek 12V1TBA-250L ashp , PUMPis intgral to the harnitek indoor 250 litre tank cabinet , controlled by the harnitek ecu . pump model is...

11 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Topic
Water pump operation choices on my Harnitek heat pump
11 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Replies: 4
Views: 955
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

i have the same problem Clockworks , 12kw ashp cycling every 20 minutes .. so i am following along to see if there's a solution , other than repl...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

Ah ! thats fascinating James thank you , that fills in the blanks as to why its working like that . so ! i have done a little bit ....oh ye...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

still gathering data to help me decide . a few more graphs i have compiled .. Looking at these i can see best cop,so far ,...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

some better resolution graphs for you S gatorator 🙂

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

Here’s mine .. That’s the high pressure line over the amps line. regards robert

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

Funnily enough i was just doing this yesterday .. I assumed 20% anti freeze for a 3965 specific heat . i couldn't get a rspo...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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