ᐅ CTA Aeroheat Heat Pump Settings for Optimization

Created on: 15 Oct 2020 11:59
I
ivenh0
Hi everyone,

I would also like to fine-tune the settings of my heat pump. Here are the current settings:

Process dashboard: temperatures, inputs/outputs, cycle times, operating hours, system status.


Table with temperature parameters and limit values: return limit, outdoor temperature, target temperatures.


Table of heating and hot water settings with values.


Digital heating display in blue with heating curve and temperature readings


The hot water is set to 47°C (117°F) with circulation running 3 hours in the morning and 4 hours in the evening. Circulation pump is on for 5 minutes, off for 55 minutes.

Specific questions:
- We repeatedly get error 724 (defrost temperature difference >15K). The technician suggested increasing the secondary circuit flow, saying the energy in the heating circuit is currently not sufficient for defrosting. That sounds illogical to me. What else could be causing this error?
- The flow in the bathroom is relatively low, and naturally, there is also the least piping area installed there per square meter. How can I increase the flow in that area?

All actuators are fully open. The heating system is in the basement, and the problematic bathroom is on the top floor, on the last circuit at the manifold.

I would appreciate any tips.

Ivenh0
I
ivenh0
16 Oct 2020 13:28
Could it be related to the overflow valve? During the last technician visit, they opened the valve significantly.
D
Daniel-Sp
16 Oct 2020 13:33
Then you would probably have the problem during defrosting in heating mode as well.
Can you provide a DTA?
I
ivenh0
16 Oct 2020 13:42
Daniel-Sp schrieb:

then you would probably also have the problem during defrosting in heating mode
can you provide a DTA?

Yes, link will be sent via private message
D
Daniel-Sp
16 Oct 2020 14:00
According to DTA, the defrost valve did not open. However, it works in heating mode. A technician needs to take a look. Try contacting the manufacturer.
Screen with several trend curves: temperature, flow rate, and other measurements over time.
I
ivenh0
16 Oct 2020 14:42
Ok. Great. Thank you very much for the thorough analysis!

Are there any other settings on my heat pump that should be adjusted to make it run more efficiently?
D
Daniel-Sp
16 Oct 2020 15:46
I haven’t checked that quickly yet.