Mitsubishi Electric PKA-A12HA6, Service Manual

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31
10-2. BACK-UP HEATING FUNCTION (CN152)
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 CN152 of the indoor unit, use
PAC-SE59RA-E(optional parts).
Z
[
0˚C [˚F]
0 < Z < 2.5˚C [4.5˚F]
2.5˚C [4.5˚F]
[
Z
OFF
Keeping condition
ON
1
2
3
Temperature difference
[Z=Set temp. - Room temp.]
Back-up heater
signal output
Z 0 2.5 ˚C [4.5˚F] OFF
ON
1
Press the button.
2
Select "Service" with the [Cursor] buttons (
F1
and
F2
) or the [Page] buttons (
F3
and
F4
), and press the button.
PAR-31MAA
F1 F2 F3 F4
Main menu Main 3/3
Main display:
Cursor Page
Maintenance
Initial setting
Service
Service menu
Select:
Cursor
Enter maintenance password
9 999
Service menu 1/2
Main menu:
Cursor
Test run
Input maintenance info.
Function setting
Check
Self check
Check menu 1/1
Service menu:
Cursor
Error history
Refrigerant volume check
Refrigerant leak check
Smooth maintenance
Request code
Request code
Request:
Cursor
Ref.address 0
Request code 004
3
Enter the current maintenance password (4 numerical digits).
• Move cursor to the digit you wat to change with the
F1
or
F2
button.
• Set each number (0 through 9) with the F3 or
F4
button.
(Note: The initial maintenance password is "9999".)
4
Then, press the button.
5
Select "Check" with the F1 or F2 button, and press the button.
6
Select "Request code" with the
F1
or
F2
button, and press the button.
7
Set the Refrigerant address and Request code.
• Select the item to be changed with the F1 or F2 button.
• Select the required setting with the
F3
or
F4
button.
8
Press the
F3
or
F4
button to set the Refrigerant address "0".
9
Press the
F3
or
F4
button to set the desired request code No.
• Rotation & Back up operation: Enter one request code from 311–318.
• 2nd stage cut-in operation: Enter one request code from 321–324.
0
Press the button. Data will be collected and displayed.
1
Press the
F3
or
F4
button to set the Refrigerant address "1".
Set above
9
–
0
.
2
To return to the Main menu, press the button.
(2) Rotation and back up operation
OCH580