Faults
When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the subordinate unit suffers faults, only the unit stops operating, and other units are not affected.
Protection
When the main unit is under protection, only the unit stops operating, and other units keep running;
When the subordinate unit is under protection, only the unit stops operating, and other units are not affected.
CAUTION
Detail information
CN123:Pump(220-240V control power supply )
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.
4）When the frequency conversion pump plus constant frequency pump control of unit valid for S1-4 ON，CN123
controls the start and stop of the constant frequency pump.
CN125:Three-way valve(hot-water valve)
CN121: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 220-240V control power supply，so
special attention should be paid when installing the light.
CN115:W-HEAT,Electric heater of water flow switch
CN140:Power supply,220-240VAC input
CN114:Water flow switch signal
CN138:Remote function of cool/heat signal
CN137:Remote function of on/off signal
CN119:
HEAT1.Pipeline Auxiliary Heater HEAT2.Hot Water Tank Auxiliary Heater
Attention: the control port value of the pump actually detected is ON/OFF but not 220-240V control power supply，so
special attention should be paid when installing the pipeline auxiliary heater.
CN101:Tw:Total water outlet temperature sensor when several units are connected in parallel
CN103:T5:Water tank temperature sensor
CN105:Taf1:Water side antifreeze temperature
CN300:Program burn in port(WizPro200RS programming device).
CN109:Conmunicate with main board
Fig. 8-6 Slave board of 65KW and 110KW
Table 8-3
15
CN110:TEMP-SW,Target water temperature switching port.
CN108:Inverter pump 0-10V output control singnal
CN109:W.P-SW,Water pressure switching port.
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