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2
3
4
5
Detail information
7
8
No.
Table 8-5
10
9
11
12
13
CN30：Input of three-phase four-wire power supply (fault code E1)
Input of transformer, 220-240V AC current. (only valid for the main unit)
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be
120º among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will
be displayed. When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase
dislocation of power supply are detected only in the early period after the power supply is connected, and they are not
detected while the unit is in operation.
CN12:Quick return oil solenoid valve
CN80:Injection solenoid valve of compressor system B
CN47:Injection solenoid valve of compressor system A
CN5:Electric heating belt for plate heat exchanger
CN40:Multi-function solenoid valve
6
CN13:Electric heating belt for plate heat exchanger
CN41:Liquid bypass solenoid valve
CN42:Crankcase heater
CN6:Four-way valve
CN43:Crankcase heater
CN4/CN11:Electric heater of water flow switch
CN14:Three-way valve(hot-water valve)
14
CN14:Two-way valve(not used)
15
CN83:Pump
1）After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the
process of operation.
2）In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating.
3）In case of shutdown under the pump mode, the pump can be directly shut down.
16
CN83:COMP-STATE,connect with an ac light to indicate the state of the compressor
Attention: the control port value of the pump actually detected is ON/OFF but not 220-230V control power supply，so
special attention should be paid when installing the light.
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