AC switch controls AC compressor regardless of MODE switch

AC_Switch_2I’m like the way Japanese cars allow you select the A/C system with a separate button, regardless of the heater / AC mode selector switch. (They do not allow me to turn off the AC when in defrost mode,  even though I would like to be able to do that)

The Evans controller gave me no options on if I want to run the AC or not. It turned on the AC compressor for several MODEs, including the “VENT” mode. I’m not sure why they do this, as when in the AC mode,  the vents are selected,  so why did they want to run the AC when VENTS are selected?

Anyway,  I didn’t like this, and I also wanted the ability to control the AC compressor, even if DEFROST was selected so I modified the electrical system so I could force the AC compressor ON or OFF, regardless of the MODE switch position.

Basically,  anytime the MODE switch is in any position other than OFF,  I can turn the compressor ON or OFF.

AC_Switch
I added several switches to the MIrada, One of them controls the AC compressor

AC_Switch_2

ROTARYPANELw
Front of Evans controller
EvansController_1
Back of Evans controller showing the MODE and FAN switch connections, the BLUE wire that needs to be cut, and the RED jumper that needs to be spliced.
AC_Elect_Mods
Diagram showing modification.

 

NOTE – This mod does not override the Evans OFF mode, nor does it override the pressure or freeze switches that will turn the compressor OFF.