Mitsubishi Electric PUZ-WM50VHA Service Manual page 57

Air to water heat pump units
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SW2 setting
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,
"–" is displayed.
ON
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
Return water temperature on error
occurring
0 to 100
ON
1
2 3 4 5 6
Plate HEX Liquid temperature (TH34) on
error occurring
−40 to 90
ON
1
2 3 4 5 6
Pressure saturation temperature (T
on error occurring
−39 to 88
ON
1
2 3 4 5 6
OCH727
Display detail
)
63HS
57
The black square (
Explanation for display
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: Liquid pipe temperature (TH3)
4: Discharge pipe temperature (TH4)
6: Two phase pipe (TH6)
7: Ambient temperature (TH7)
8: Heat sink temperature (TH8)
33: Comp. surface temperature (TH33)
34: Plate hex liquid (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
0 to 100
−40 to 90
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
−39 to 88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
) indicates a switch position.
0.5 s
2 s
1
25
0.5 s
2 s
15
0.5 s
2 s
15
Unit
Code
display
Code
display
Code
display
Hz
Step
:
:
:

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