Versatile Thermostat Configuration Feedback & TPI Question

[Carlo0201]

Hello everyone,

I am using Versatile Thermostat for centralized control of my heating system. I have set up 9 Avatto TRVs on radiators across 8 different rooms. The Avatto TRVs do not have valve position control (duty cycle); they only accept target setpoints. A master thermostat entity manages the central boiler. I have configured different modes (eco, comfort, boost) for each TRV.
My TPI Central Configuration is:
coef_int: 2
coef_ext: 0.6
minimum activation delay: 180s

Self-regulation on each TRV: Medium
Internal Temperature of the Underlying Equipment: true

I have a few questions regarding the system performance and observed behaviors:

• Short Cycles: it often happens that the boiler is switched on for a very short period (<1 min)
  

• Slow Heating: The rooms are taking a very long time to reach the set temperature.
  

• Poor Insulation: My house has very poor thermal insulation. What TPI values are recommended for this kind of environment?
  

• Set Point Anomaly: I have noticed that occasionally, a TRV setpoint is automatically configured to an unusual value, such as   (-119,111,680.8). Why does this happen?
  

• Overshooting: The TRV in a room requests heat even when the setpoint has already been reached or surpassed (sometimes the temperature of the room exceeds the setpoint by 1 degree).
  

Any advice or insight into these issues would be greatly appreciated.

Thank you.

[jmcollin78]

Hello,

You TPI coefficient are very, very too high. Is that normal ?

coef_int: 2
coef_ext: 0.6

Normal values are 0.6 and 0.01.

[Carlo0201]

Now i set
coef_int: 1,2
coef_ext: 0.05

[jmcollin78]

it is still very high. Is there any reason ? Is it bette with those values ? If yes continue to step down the values