Mitsubishi Electric EHST20C-VM6HB Service Manual page 75

Split-type, 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
U9 Error details (To be shown while
error call is deferred.)
ON
1
2 3 4 5 6
OCH533D
Display detail
75
The black square ( ) indicates a switch position.
Explanation for display
3 to 217
(When the comp.shell thermistor detects 100°C or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 105°C;
Description
(No error)
Overvoltage error
Undervoltage error
Input current sensor error
L
-phase open error
1
Abnormal power synchronous signal
PFC error (SW75VHA)
(Overvoltage / Undervoltage / Overcurrent)
PFC/ IGBT error (SW·VHA)
(Undervoltage)
* Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L
phase open error (04) + PFC error (10) = 14
1
0.5 s
0.5 s
2 s
1
05
Display
00
01
02
04
08
10
20
Unit
:
Code
display

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