2. External signal output function
(1) External output
In the case when one or more air conditioner units are "ON", and an error is occurring on one or more air conditioner units,
a signal indicating that an error is occurring is output.
(2) External output specification
Lead wires (4 wires, with black tube)
* "On" is output even when there is "Error".
(3) Example of a recommended circuit
In the case of a relay being operated
Power supply (*1)
L1: ON/OFF display lamp
L2: Error display lamp
5 Setting the functions
(1) Setting local remote controller operation prohibit function from this controller
(excluding ON/OFF remote controller)
When connecting several system controllers, and setting the "local remote controller operation prohibit"
function from this controller, set this controller's SW3-4 "operation prohibit setting changeover" to "ON (permit)".
(2) Changing set temperature display to "Fahrenheit display" (excluding ON/OFF remote controller)
To prohibit the operation of a system controller other than this system when local remote controller operation prohibit is set from
this system, set SW3-5 "operation prohibit range setting changeover" to "ON (including system controller)".
[System remote controller (SF44SRA)
/Schedule timer (YT34STA)]
There are other function setting items depending on the device.
For details on setting the functions and the operation methods, refer to (3) List of switch settings and each respective
instruction manual before turning the power ON.
Detail of each terminal
When units are "ON" and an error is occurring,
each element is ON.
The extension length of the connection cable
can be up to 10 m.
The relay, lamps, diodes and extension cables
are not supplied with the product.
Remote controller main unit
For relay Z1, Z2 use the specifications given below.
Rated voltage: 12VDC, 24VDC
Power consumption: 0.9 W or less
(*1) Provide a power supply suitable to the relay used. (12VDC
(*2) Always insert diodes at both terminals of the relay coil.
[ON/OFF remote controller (YT40ANRA)]