Underfloor heating air-water heat pump. House too warm when the sun shines

  • Erstellt am 2019-12-04 14:18:21

chewbacca123

2020-10-01 08:51:03
  • #1
Hello everyone, I wanted to give you a quick update on my heating system now that it has started up again in the colder days.

It was noticeable that it had an incredibly high cycling rate again, 34-40 starts in 48 hours.
I then analyzed the data together with Daniel-SP and we quickly realized that it was definitely due to the bypass valve!
A short story about it:

In summer we had an error message because the compressor was heating up for hours (8-10h). This was due to our heat pump being heated above 35°, as it is located on the south side in full sun. So that was no problem and okay. Then a technician from the manufacturer Novelan came.
He basically looked at all my settings and set the bypass valve from almost closed to almost fully open. According to him, that was perfectly fine and it would only let excess flow out anyway. The valve had to be that far open.

We quickly found out that the frequent cycling only happened because of the open valve.
After I closed it again almost completely (yesterday morning) the picture already looked much better this morning.

I'm telling you this so you don’t have the same happen to you.
But I’m shocked that a professional, the technician from Novelan, would make such a statement that could cause more harm than good....

Best regards and all the best to you,
Ina
 

OWLer

2020-10-01 09:19:51
  • #2
I’m already not looking forward to that. Thanks for the feedback, but it worries me a bit that I will have to document all settings in the future before letting the technician handle it.
 

chewbacca123

2020-10-01 09:22:25
  • #3
I was also, as written above, really shocked! before anyone now adjusts anything on our heating, I will from now on always download data beforehand and, above all, always be there when they screw anything.
 

Mycraft

2020-10-01 09:23:44
  • #4
Welcome to the world of heat pump owners
 

Alessandro

2020-10-01 09:38:16
  • #5
Can you nowadays still operate or sensibly set a heat pump with underfloor heating as an average person (layman) without having to read up for 1000 hours? I have neither the desire nor the time for that. The topic of hydraulic balancing, use of ERR, cycling and data reading or analyzing annoys me so much that I already have sleepless nights. If you can’t even rely on the manufacturer’s technicians, how can you then trust the installer? He has set the heating limit to 18° Celsius by default, return flow target value to 38° Celsius at AT=10° Celsius. You can’t sell and install an efficient heating system and then leave the builder alone with it, with arbitrarily set values. Makes me want to puke
 

bortel

2020-10-01 09:43:15
  • #6
well, welcome to real life^^
 

Similar topics
02.09.2013Which heating system for prefab houses: air source heat pump, geothermal, solar, photovoltaic17
26.08.2013Which heat pump is most suitable for our new building?13
18.02.2014Solar heat pump / what to watch for in the offer (single-family house, new construction, KFW70)22
07.04.2014Is new construction possible without solar and without a heat pump?20
19.05.2021Experiences with brine heat pump491
07.02.2016Combination of air-water heat pump + solar thermal + stove or only stove and air-water heat pump13
01.09.2018Offer for heating / sanitary / ventilation - is it realistic?55
14.09.2018Heating (Heat Pump) Incorrect, heat output too high?14
09.04.2021Circulation timer on the heater29
07.06.2021Installation of heat pump/heating - before or after screed16
02.10.2021Heating maintenance contract - how much should it cost?27
05.07.2022Renew old heating with heat pump or gas boiler and domestic hot water heat pump58
11.01.2024Compressor broken after 6 years (Ecoforest ground heat pump / well construction Heth)41
07.10.2023How to plan heating with a heat pump in new construction?14
22.02.2024Heat pumps require a lot of energy and make noise73
06.01.20251980s terraced house with underfloor heating - heat pump?10

Oben