Mitsubishi Electric Mr.SLIM PCA Series Service Manual page 30

(2) Setting method of each function by wired remote controller
1. Stop operation( ).
2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ( ).
TEST
After a while, [00] appears in the refrigerant address number display area.(at
3. Press the button ( ) for 3 seconds to switch to [Maintenance monitor].
CHECK
Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode
(i.e., while "----" is blinking) since no buttons are operative.
[----] appears on the screen ( ) when [Maintenance monitor] is activated.
(The display ( ) now allows you to set a request code No.)
4. Press the [TEMP (
[ScreenB]
5. Press the [CLOCK (
6. Press the button ( ) to perform function setting.
FILTER
If above setting operations are done correctly, "Request code number" will appear in data display area.( )
[Example: When the "311" of "Request code number" is set, [311] appears on the screen.( )]
[Refererence]
You can check current "request code number" setting by setting the "request code number"("310" or "320") and
pressing the button.( )
FILTER
[Example: When the current setting is "Setting No.2(Request code 311)", [311] appears on the screen.( )]
7. To return to normal mode, press the
10-2. BACK-UP HEATING FUNCTION (CN24)
10-2-1. Operation
Outline of functions
The back-up heater signal is sent out according to the tempera-
ture difference between indoor room temperature and set tem-
perature. This function is available only in heating operation.
10-2-2. How to connect
When connecting to the connector CN24 of the indoor unit, use
PAC-SE56RA-E (optional parts).
OCH501
and )] buttons ( ) to select the desired refrigerant address.
and )] buttons ( ) to set the desired request code No.("311~318", "321~324")
button ( ).
ON/OFF
B: Refrigerant address
C: Data display area
D: Request code display area
)
Temperature difference
(Z=Set temp. - Room temp.)
1 Z 0˚C(˚F)
2 0 < Z < 2.5˚C(4.5˚F)
3 2.5˚C(4.5˚F)
Z 0
30
Back-up heater
signal output
OFF
Keeping condition
Z ON
ON
OFF
2.5˚C(4.5˚F)