Mitsubishi Electric PUZ-HWM140VHA Service Manual page 51

SW2 setting
Secondary LEV opening pulse
ON
0 to 500
Heating: LEV-A
1 2 3 4 5 6
Cooling: LEV-B
U9 error detail history (latest)
ON
1 2 3 4 5 6
DC bus voltage
ON
100 to 1023
1 2 3 4 5 6
Communication demand capacity
ON
0 to 255
1 2 3 4 5 6
Error postponement code history (2)
ON
of outdoor unit
1 2 3 4 5 6
Error postponement code history (3)
ON
of outdoor unit
1 2 3 4 5 6
Error history (3) (Oldest)
ON
Alternate display of abnormal unit
number and code
1 2 3 4 5 6
Error thermistor display
When there is no error thermistor,
ON
"–" is displayed.
1 2 3 4 5 6
Operation frequency on error occurring
0 to 255
ON
1 2 3 4 5 6
Fan step on error occurring
0 to 16
ON
1 2 3 4 5 6
OCH748
Display detail
51
The black square (
Explanation for display
0 to 500
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L -phase open error
1
Abnormal power synchronous signal
PFC error
(Overvoltage/Undervoltage/Overcurrent)
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0 A
L phase open error (04) + PFC error (10) = 14
1
100 to 1023
(When it is 100 V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
0 to 255
When the communication demand is not set, "100" is
displayed.
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
"00" is displayed in the case of no postponement.
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
"00" is displayed in the case of no postponement.
When no error history, "0" and "– –" are displayed by
turns.
3: Liquid pipe temperature (TH3),
Suction pipe temperature (TH32)
4: Discharge pipe temperature (TH4)
6: 2-phase pipe temperature (TH6)
7: Ambient temperature (TH7)
8: Heat sink temperature (TH8)
33: Comp. surface temperature (TH33)
34: Plate HEX liquid pipe thermistor (TH34)
0 to 255
(When it is 100 Hz or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
(Example) When 125 Hz;
0.5 s
0 to 16
■
) indicates a switch position.
Display
00
01
02
04
08
display
10
display
display
display
display
0.5 s 2 s
1 25
Unit
Pulse
Code
V
%
Code
Code
Code
Code
Hz
Step