20Fig. 12 – Wiring Diagram Size 18Indoor unit Outdoor unitCODE PART NAME CODE PART NAMECN1 Input: 230VAC High voltage Connection of the terminal CN7、CN8 Input: 230V High voltageCN2 Input: 230VAC High voltage Connection of the terminal CN2 Output: Connection of the high voltageCN3/CN26 Output: 0V Connection of the earth CN3、CN4 Output: High voltage for 4-way controlCN5 Output: 0-5VDC Connection of the Water level switch CN11、CN16 Output: 230V High voltage for HEATERCN6 Output: 5VDC Connection of the Room and Pipe temperature CN5 Output: Pulse(0-320V) for DC FANCN8/CN18 Output: 320VDC High voltage Connection of the Reactor CN12、CN13 Output: Connection of the high voltageCN9 Output: 5VDC Connection of the CCM U V W Output: Pulse(0-320V) for compressorCN10(CN10A) Output: 12VDC Connection of the Display board CN10 Input:Pin1 (5V) Pin2(0-5V)CN11/CN14 Output: 220VAC High voltage Connection of the New Fan CN1 Input:Pin3-4 (5V) Pin2(0V),Pin1,Pin5(0-5V)CN13 Output: 220VAC High voltage Connection of the Pump CN18 Output:Pin5&6(12V) Pin1-Pin4:Pulse waveform,(0-12V)CN15 Output: 320VDC High voltage Connection of the Fan boardCN23 Output: 1-12VDC Connection of the Remote switchCN33 Output: 0V Connection of the AlarmCN40 Output: 12VDC Connection of the Wire controllerCN41 Output: 24VDC Between CN2 Connection of the S signal