Information
Software versions
Below you will find which software version applies to which products.
Current software
Version 20260610
Read more about changes: Click here
Version 20250604
Read more about changes: Click here
Ground source heating
Indoor modul
Control for CTC heatpumps
Heatpumps
GSI 8-16: 20260610
GSI 608-616: 20260610
GS 606-608: 20260610
EcoHeat 400 II: 20260610
EcoPart i600M: 20260604
EcoPart i425-435 Pro: 20260604
EcoZenith i250: 20260610
EcoZenith i255: 20260610
EcoZenith i350: 20260610
EcoZenith i360: 20260610
EcoZenith i550: 20260604
EcoZenith i555 Pro: 20260604
EcoVent i350F: 20260610
EcoVent i360F: 20260610
EcoLogic M/L : 20260604
EcoLogic S: 20260604
EcoAir 700M: 20260610
EcoAir C100: Latest version
Get your heat pump ready for the latest software!
This list is for those who do not have a compatible product but are able to change the display.
Ground source heating
Product name
CTC GSi 8-16
CTC GS 6-8
CTC EcoHeat 400 I
CTC EcoPart i425-435 Pro I
Serial number from –> to
7310-1521-0422 –> 7310-2038-1467
7310-1720-0792 –> 7310-2035-1332
7310-0000-0000 –> 7310-2039-1467
7301-0000-0000 –> 7301-2039-0473
Need to change to the following display
589689301 Display GSi/GS 6-16 II
589689301 Display GSi/GS 6-16 II
589685301 Display EH 400 II
589705301 Display EL Pro/Family, EP Pro II
Indoor modules
Product name
CTC EcoZenith i550 Pro
CTC EcoZenith i250
CTC EcoZenith i350
CTC EcoVent i350F
Serial number from –> to
7250-1319-0145 –> 7250-2037-0388
7208-0000-0000 –> 7208-2038-2383
7208-1635-0000 –> 7208-2038-2450
7208-1635-0000 –> 7208-2038-2453
Need to change to the following display
589683301 Display EZ i555/i550
589684301 Display EZ i255/i250
589688301 Display EZ i350/EV i350F II
589688301 Display EZ i350/EV i350F II
Control for ctc heat pumps
Product name
CTC EcoLogic Pro/Family
Need to change to the following display
589705301 Display EL Pro/Family, EP Pro II
Here are the products that are compatible with the latest software.
Ground source heating
Product name
CTC GSi 608-616
CTC GS 606-608
CTC EcoPart i600M
CTC EcoHeat 400 II
CTC EcoPart i425-435 Pro II
Serial number from –> to
7310-2039-1468 –> Later
7310-2039-1468 –> Later
7301-2115-0246 –> Later
7310-2039-1468 –> Later
7301-2039-0473 –> Later
Indoor Modules
Product name
CTC EcoZenith i555 Pro
CTC EcoZenith i255
CTC EcoZenith i360
CTC EcoVent i360F
Serial number from –> to
7250-2039-0389 –> Later
7208-2039-2454 –> Later
7208-2039-2454 –> Later
7208-2040-2624 –> Later
Control for ctc heat pumps
Product name
CTC EcoLogic M/L
Serial number from –> to
Can change display/upgrade
Change display
Do you need to change the display on your heat pump? Download our manuals below.
Does your display look like this?
All you have to do is pull the right side of the display, like opening a book.
Installing software
Not sure how to install the software?
Download our manual below.
Are you looking for a previous software?
If you need to get hold of a previous software, please contact our support.