63 
15.5.12  H33 (Unspecified Voltage between Indoor and Outdoor) 
Malfunction Decision Conditions 
  The supply power is detected for its requirement by the indoor/outdoor transmission. 
 
Malfunction Caused 
  Wrong models interconnected. 
  Wrong indoor unit and outdoor unit PCBs used. 
  Indoor unit or outdoor unit PCB defective. 
 
Troubleshooting