The only 4-pin wired controller is for AWC-LC( Meant for light commercial units) and
AWC-3( Meant for the hi-wall units). (CXH/CPP)
To connect to light commercial find CN40 on unit
FIND CN40 on the board on the light commercial units
The 5-pin wired controller( Known as AWC-2) installation IS MEANT FOR THE CPG MODELS