Mitsubishi Electric EHST20C-VM6HB Service Manual page 72

SW2 setting
DC bus voltage
180 to 370 (SW75/100/120V)
ON
300 to 750 (SW100/120Y)
1 2 3 4 5 6
Error postponement code history (2)
of outdoor unit
ON
1 2 3 4 5 6
Error postponement code history (3)
of outdoor unit
ON
1 2 3 4 5 6
Error history (3) (Oldest)
Alternate display of abnormal unit
ON
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 10
ON
1 2 3 4 5 6
OCH533D
Display detail
The black square ( ) indicates a switch position.
Explanation for display
180 to 370 (SW75/100/120V)
300 to 750 (SW100/120Y)
(When it is 100V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
"00" is displayed in case of no postponement.
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
"00" is displayed in case of no postponement.
When no error history, "0" and "– –" are displayed by
turns.
3: Outdoor pipe temperature/Liquid (TH3)
4: Discharge thermistor (TH4)
6: 2-phase pipe (TH6)
7: Ambient temperature (TH7)
8: Outdoor heat sink (TH8)
34: Comp. surface 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 to 10
72
0.5 s 0.5 s 2 s
1 25
Unit
V
Code
display
Code
display
Code
display
Code
display
Hz
Step