Hisense AS-09TR2SYDDX01 Service Manual page 63

3.2 Timing sequence description:
(1) Room card control:
1) Control of room card disconnection: the air conditioner shall be shut down after the room card control
signal is disconnected. In this state, the indoor unit can't be started. If the user performs starting operation, the
wire controller shall not respond and displays power-off.
2) Control of room card connection: after the short circuit of room card control interface, release power-on
restrictions, the wire controller maintains power-off and the startup & shutdown control is effective.
(2) Fire protection
1) Access to fire protection: the air conditioner shall be shut down after the fire protection signal is
disconnected. In this state, the indoor unit can't be started. If the user performs starting operation, the wire
controller shall not respond and displays power-off.
2) Cancellation of fire protection: after the short circuit of fire protection signal, release power-on restrictions,
the wire controller maintains power-off and the startup & shutdown control is effective.
(3) ON/OFF function
1) In the situation where ON/OFF function is effect, the port is closed and in short circuit, the indoor unit
starts; the indoor unit shuts down once the port is disconnected;
2) Other operation information (such as mode, air speed, air door, etc.) except for startup & shutdown can
be set through the wire controller, remote-controller and WIFI module;
3) In the mode of ON/OFF function, wire controller, remote-controller, WIFI module and room card control
cannot control the machine startup & shutdown, and nor can in the mode of the timing or sleep function.
4) There will be 12V signal output when machine fault occurs.
3.3Relative priorities of instructions
ON/OFF function has the highest priority. The room card control shall be invalid when ON/OFF function is
effective.
The room card control and fire protection can not be selected at the same time, only one can be selected.
Fig.5Hardware connection diagram
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