Mitsubishi Electric PUHZ-W112VHA Service Manual page 43

Air to water heat pump
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SW2 setting
Comp. surface temperature (TH34)
3 to 217
ON
1
2 3 4 5 6
Outdoor suction pipe temperature (TH33)
−39 to 88
ON
1
2 3 4 5 6
Requested capacity step (Q STEP)
0 to 7
ON
1
2 3 4 5 6
U9 Error details (To be shown while
error call is deferred.)
ON
1
2 3 4 5 6
OCH562D
Display detail
43
The black square (
Explanation for display
3 to 217
(When the temperature is 100: or more, the
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 130:;
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
0 to 7
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L1-phase open error
Abnormal power synchronous signal
PFC/IGBT error
Undervoltage
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L1 phase open error (04) + PFC/IGBT error (20) = 24
) indicates a switch position.
Unit
0.5 s
2 s
1
30
0.5 s
2 s
15
Step
Display
00
01
02
04
08
20
Code
display
:
:

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