How to Change the Minimum Set Temp Thermotec Inverter Heat Pumps
On the Thermotec Inverter heat pumps, the default lowest set water temperature is +15c On koi ponds, often the owners want to keep the pond at +10 to +12c in winter This guide shows you how to change the lowest set temperature from +15c to +10c
Procedure
At the home screen, press on the cog icon
Enter the access code of 66
Press the right button to scroll through the parameters to parameter R10
Click on the value for R10 which is normally on 15
Change the value from 15 to 10
Exit back to the home screen
You should now be able to set the desired water temperature to +10c
Note: We do not recommend that you set this to lower than +10c