Mitsubishi Electric PUH-P8MYA Technical & Service Manual page 31

Self diagnosis by SW2
• PUH-P8MYA/P10MYA
SW2 setting Display contents
Liquid temperature
(TH1)
1 2 3 4 5 6 –39 - 88
ON
OFF
Discharge tempera-
ture (TH2)
0 - 216
1 2 3 4 5 6
ON
OFF
FAN output
0 - 100
1 2 3 4 5 6
ON
OFF
Number of compressor
ON/OFF
0 - 999
1 2 3 4 5 6
ON
OFF
Compressor inte-
grated operation time
1 2 3 4 5 6
0 - 999
ON
OFF
Current check mode
code 1
1 2 3 4 5 6
ON
OFF
Current check mode
code 2
1 2 3 4 5 6
ON
OFF
LEV opening angle
(/5)
1 2 3 4 5 6
0 - 400
ON
OFF
Description of display
–39 - 88
(When 0 °C or lower, "–"and temperature are displayed
alternately.)
<Example> When –10,
every other second
←→ 10
–
0 - 216
(When 100 or higher, 100s digit and 10s and units digits
are displayed alternately.)
<Example> When 115,
every other second
←→ 15
1
0 - 100
(When 100 or higher, 100s digit and 10s and units digits
are displayed alternately.)
<Example> When 100,
every other second
←→ 00
1
0 - 999
(When 100 or higher, 100s digit and 10s and units digits
are displayed alternately.)
<Example> When 425,
every other second
←→ 25
4
0 - 999
(When 100 or higher, 100s digit and 10s and units digits
are displayed alternately.)
<Example> When 245,
every other second
←→ 45
2
Check mode segment display
method
Segment and bit correspon-
dence
bit 2 bit 3
bit 1 bit 4
bit 5 bit 8
bit 6 bit 7
0 - 400
(When 100 or higher, 100s digit and 10s and units digits
are displayed alternately.)
<Example> When 200 ,
every other second
←→ 00
2
–29–
Check mode 1 display method
bit 1 ..... Compressor discharge temperature
abnormal
bit 2 ..... Compressor discharge temp thermistor
abnormal (TH2)
bit 3 ..... CN23 short-circuit connector un-
plugged
bit 5 ..... Liquid temp thermistor abnormal (TH1)
Check mode 2 display method
bit 1 ..... Overcurrent trip (Comp)
bit 2 ..... Low pressure protection
Unit
°C
°C
%
100 times
10 hours
5 pulses