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⑩ Linkage switch
10.1
Linkage switch is input OF/OFF signal, heat pump can be
turned on/off by the signal.
10.2
When operating panel is under on state, if linkage signal is on,
heat pump keep on state. If linkage signal is off, heat pump will
be turned off.
10.3
When operating panel is under off state, if linkage signal is off,
heat pump keep off state. If linkage signal is on, heat pump will
be turned on.