Hello, I have had the Weishaupt split heat pump LS 8 B R E since July, so far only used in summer mode. Today I switched it to heating mode, and the heat pump cycles on and off 6 times between 4 a.m. and 11 a.m. What options do I have to reduce this cycling?
I am new to heat pumps. It is a 120m² (1,292 sq ft) mid-terrace house with 9 radiators, no buffer tank installed. What settings can I use to minimize the heat pump cycling? What settings do you use in the transition period? I would appreciate any tips.
Best regards
I am new to heat pumps. It is a 120m² (1,292 sq ft) mid-terrace house with 9 radiators, no buffer tank installed. What settings can I use to minimize the heat pump cycling? What settings do you use in the transition period? I would appreciate any tips.
Best regards
KingJulien12 Oct 2023 20:41Take a close look at the manuals for your heat pump—that’s the absolute starting point.
I don’t think the control curves look good, regardless of the transition period.
The cycles are way too short. The heat pump needs about 4 cycles before the return temperature even starts to change.
Check if you can operate it mainly based on return temperature control. That’s one approach.
Also, you might try making the control system generally less sensitive. I’m not sure what settings your heating system offers for that.
Are all ERR values fully open, and are any overcurrent valves closed?
I don’t think the control curves look good, regardless of the transition period.
The cycles are way too short. The heat pump needs about 4 cycles before the return temperature even starts to change.
Check if you can operate it mainly based on return temperature control. That’s one approach.
Also, you might try making the control system generally less sensitive. I’m not sure what settings your heating system offers for that.
Are all ERR values fully open, and are any overcurrent valves closed?
KingJulien schrieb:
Take a close look at the instructions for your heat pump; that’s the essential starting point.
I don’t think the curves look good, transition period or not.
The cycles are way too short. The heat pump needs about 4 cycles before the return temperature changes at all.
Check if you can operate it mainly based on the return temperature. That’s one possible approach.
Also, you could try making the control system generally less responsive. Not sure what settings your heating system offers for that.
Are all the ERR valves fully open, and what about any bypass valves? I’ve only read the most frequently mentioned points in the manual. ERR valves are all open. I’ll have to check the bypass valve tomorrow. Return-controlled operation? How can I tell if it’s set that way? Does “less responsive” mean a larger hysteresis? Should the building be set to “light” mode?
B
Buschreiter13 Oct 2023 07:42Typically, heating systems can only be adjusted once the average temperature is around 5°C (41°F). Then adjustments are made again at temperatures well below 0°C (32°F). This will be no different for a heat pump than for a gas or oil heating system.
GePrest schrieb:
This is a screenshot from the WEM portal by Weishaupt. 5 years price about €75 They charge ongoing fees for that? 😱 😳 🙄 🤨 😡
KingJulien13 Oct 2023 10:02Buschreiter schrieb:
Usually, heating systems can only be properly adjusted once the average temperature is around 5°C (41°F). Then again at temperatures well below 0°C (32°F). This will be no different for a heat pump than for a gas or oil heating system. That’s when you can fine-tune the settings. However, there is no reason not to provide temporary heating even if the control behavior seems clearly problematic at first.
KingJulien13 Oct 2023 10:31PS: You are of course right, for a new build (?) I also think it’s still too early to start heating. Let’s wait for the weather change before making any further judgments.
Similar topics