Setting The Functions - Mitsubishi Electric PAC-SF44SRA Installation Manual

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
CN3 Lead wires (4 wires, with black tube)
No. 1 Yellow
No. 2 Orange
No. 3 Red
No. 4 Brown
* "On" is output even when there is "Error".
(3) Example of a recommended circuit
In the case of a relay being operated
CN3
Z 1
yellow
orange
Diode (*2)
Z 2
red
Power supply (*1)
brown
Maximum
Remote controller L1: ON/OFF display lamp
10m
L2: Error display lamp
main unit

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)]
SW3
ON
OFF
1 2 3 4 5 6 7
There are other function setting items depending on the device.
NOTE :
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
ON/OFF
Error/Normal
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.
8
Remote controller main unit
For relay Z1, Z2 use the specifications given below.
Operation coil
Rated voltage: 12VDC, 24VDC
Power consumption: 0.9 W or less
(*1) Provide a power supply suitable to the relay used. (12VDC
or 24VDC)
(*2) Always insert diodes at both terminals of the relay coil.
[ON/OFF remote controller (YT40ANRA)]
SW4
ON
OFF
1 2 3 4
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