Mitsubishi Electric PLA-A12BA Service Manual page 33

(2) Setting method of each function by wired remote controller
1. Stop running the air-conditioner( ).
2. Press the TEST button ( ) for 3 seconds so that [Maintenance mode] appears on the screen (at
After a while, [00] appears in the refrigerant address number display area.(at
3. Press the CHECK button ( ) for 3 seconds to switch to [Maintenance monitor].
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 (at
(The display (at
) now allows you to set a request code No.)
4. Press the [TEMP (
[Screen ]
5. Press the [CLOCK (
"331~335")
6. Press the FILTER button ( ) to perform function setting.
If the above operations are set correctly, request code number will appear in data display area.(at
[Example) When the request code number is "311", [311] appears on the screen.(at
[Refererence]
You can check the request code number of current setting by setting the request code number ("310", "320" or "330") and
press the FILTER button.( )
[Example) When the current setting is "Setting No.2(Request code 311)", [311] appears on the screen.(at
7. To return to normal mode, press the
11-2. BACK-UP HEATING FUNCTION(CN24)
11-2-1. 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.
11-2-2. How to connect
When connecting to the connector CN24 of the indoor unit, use
PAC-SE56RA-E(optional parts).
) when [Maintenance monitor] is activated.
and )] buttons ( ) to select the desired refrigerant address.
and )] buttons ( ) to set the desired request code No.("311~318", "321~324",
button ( ).
ON/OFF
33 33
B: Refrigerant address
C: Data display area
D: Request code display area
)
)]
Temperature difference
Z
1
2
3
Z 0
).
)
)]
signal output
Keeping condition
Z ON
ON
2.5