Samsung R290 cycling

Hardware Heatpump
1

Dear all,
In the quest of reaching the higher CoPs, and to better harness the inertia of my under floor heating, I made an experiment last night.
FSV 2093 = 1, WL min = 40

20240929-2093=1
20240929-2093=11424×899 96.3 KB

FSV 2093 = 2, WL min = 35

20241001-2093=2
20241001-2093=21861×892 84.6 KB

I think it’s worth saying the setup has not changed, but for those 2 settings. Also the outside temp didn’t vary much (5C and 7C).

So clearly, relying on the water temps to stop the heatpump is definitely harmful for the heatpump!

I’ll revert to the previous settings, obviously, just lowering the water law to avoid overheating.

Cheers,
Topaz

2

Ok more experiment,
This morning, outside temp real close to the one yesterday (first picture of previous post)

FSV 2093=1, WL min = 35

20241002-2093=1
20241002-2093=11833×882 71.2 KB

No cycling, although the CoP is not the best it averages around 4.1.

So clearly yes, the 2093 setting has a real fat impact on how to avoid cycles. I just added an automation to stop the zone 1 heating when ambient temperature raises of 0.2 (to try to cope with the high inertia of the underfloor heating).
Cheers,

3

Hi Topaz,
What is option FSV 2093?
I assume =1 and =2 for this setting is on and off?
Thanks
Ian

4

fsv 2093 can be 1 or 2 or 3 or 4:
Samsung documentation (DB68-08470A-15_IB_EHS_Wired_Remote-Control_Kit1_EU_Boook_EN_231117-D01 page 29/60) says:

Remote controller room temperature control
••Control by room temperature sensor (Service mode)
‒‒ If set to #2093 1, the compressor can be turned on or off only by Room temp sensor.
‒‒ If set to #2093 2~4, the compressor can be turned on or off by Room Temp. sensor or according to the
WL discharged water temperature.
(#2093 2, WL Thermo off → Water pump off, #2093 3, WL Thermo off → Water pump on, #2093 4,
WL Thermo off → Water pump 7min off → 3min on →.......).

I’ve tried many of the values, I could also tries the 3 and 4 and make graphs, but I’m not sure the water pump schedule wouldn’t change much.

Cheers

1 Like
5

Hi Topaz,
What is your option for 2091 or 2092?

Thanks

6

Actually they both are set to 0. I just checked to be sure.
I’m not using the MWR remote neither but I wished to rely on 2 different water laws for ufh and fcu, and more importantly I didn’t want to install more wires to control both zones!
Hope that’s helpful.
Cheers

7

Thank you Topaz, very clear.