Mitsubishi Electric MXZ-8B48NA Technical & Service Manual page 71

SW2 setting
Thermo ON time until error stops
0~999
ON
1 2 3 4 5 6
Target rotation of outdoor fan motor
ON
1 2 3 4 5 6
Sub-cool (Heating mode)
ON
1 2 3 4 5 6
Code of the difference between room
temperature and set temperature
(" Tj": 0 - 99 °C)
Tens digit of code: current Tj
Units digit of code: Tj a minute ago
ON
1 2 3 4 5 6
U9 Error status during the Error
postponement period
ON
1 2 3 4 5 6
Display detail
SW1
4
5 6
Indoor unit 1
0 0 0
Indoor unit 2
1 0 0
Indoor unit 3
0 1 0
Indoor unit 4
1 1 0
Indoor unit 5 0 0 1
Indoor unit 6 1 0 1
Indoor unit 7 0 1 1
Indoor unit 8 1 1 1
71
Explanation for display
0~999
(When it is 100 minutes or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 415 minutes;
0.5 secs.
0~999
0~130
Code of the difference between room temperature and
set temperature (" Tj")
Cooling
Tj
Tj
= room temp. Set temp.
0 Tj 0.5
1 1.0 < Tj 0.5
2 0.5 < Tj 0.5
3 0.0 < Tj 0.0
4 0.5 < Tj 0.5
5 1.0 < Tj 1.0
6 1.5 < Tj 0.5
7 2.0 < Tj 2.0
8 2.5 < Tj 2.5
9 3.0 < Tj 3.0
SW setting (1-4, 5, 6) Target unit
000 Indoor unit 1
100 Indoor unit 2
010 Indoor unit 3
110 Indoor unit 4
001 Indoor unit 5
101 Indoor unit 6
011 Indoor unit 7
111 Indoor unit 8
Description
Normal
Power circuit board
Overvoltage error
Controller circuit board
Undervoltage error
Power circuit board
L1 or L2 phase interruption error
Power circuit board
Abnormal power synchronous signal
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
0.5secs. 2 secs.
4 15
Heating
Tj
= Set temp. room temp.
Tj 0.5
0.5 < Tj 0.0
0.0 < Tj 0.5
0.5 < Tj 1.0
1.0 < Tj 1.5
1.5 < Tj 2.0
2.0 < Tj 2.5
2.5 < Tj 3.0
3.0 < Tj 3.5
3.5 < Tj
Detection point Display
00
—
01
02
04
08
Unit
Minute
rpm
:
Code
display
Code
display