Here is some info and stuff on my Hevac panel project.
Since a lot of Hevac displays and fan buttons don't work very well after over 10 years in service I decided to make a new one.
I traced all signals on the main board and scrapped the front panel and mainbaord cpu.
It is now replaced with an Arduino with a color touch lcd.
The front plastic part is printed out on a Replicator2 FDM printer in black pla.
The buttons have also been re arranged a bit and they all have a RGB LED beind them.
The AUTO function has been removed. The PROG function has been changed so it depends on outdoor climate so it really has a chance to defrost the window in cold climate. It also has wider tolerance for distrubion motors so they still would work even after they are old.
The diagnosis is built in and can be accesed via the touch lcd or bluetooth via Android.
The display is also use for displaying engine data and EAS controls.
The software and hardware is of course open source so anyone can adapt it to their own needs and add or change functions as needed.
Since a lot of Hevac displays and fan buttons don't work very well after over 10 years in service I decided to make a new one.
I traced all signals on the main board and scrapped the front panel and mainbaord cpu.
It is now replaced with an Arduino with a color touch lcd.
The front plastic part is printed out on a Replicator2 FDM printer in black pla.
The buttons have also been re arranged a bit and they all have a RGB LED beind them.
The AUTO function has been removed. The PROG function has been changed so it depends on outdoor climate so it really has a chance to defrost the window in cold climate. It also has wider tolerance for distrubion motors so they still would work even after they are old.
The diagnosis is built in and can be accesed via the touch lcd or bluetooth via Android.
The display is also use for displaying engine data and EAS controls.
The software and hardware is of course open source so anyone can adapt it to their own needs and add or change functions as needed.