Mitsubishi Electric PUZ-WM50VHA Service Manual page 59

Air to water heat pump units
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SW2 setting
Comp. surface temperature (TH33)
−52 to 221
ON
1
2 3 4 5 6
Controlling status of compressor
operating frequency
ON
1
2 3 4 5 6
OCH727
Display detail
59
The black square (
Explanation for display
−52 to 221
(When the temperature is 0: or less, "–" and tem-
perature are displayed by turns.)
(When the discharge thermistor detects 100°C or
more, hundreds digit, tens digit, and ones digit are
displayed by turns.)
(Example) When 105:;
0.5 s
The following code will be a help to know the
operating status of unit.
The tens digit
Display Compressor operating frequency control
1
Primary current control
Secondary current control
2
The ones digit (In this digit, the total number of
activated control is displayed.)
Display Compressor operating frequency control
Preventive control for excessive temp-
1
erature rise of discharge temperature
Preventive control for excessive temp-
2
erature rise of condensing temperature
4
Frosting preventing control
Preventive control for excessive temp-
8
erature rise of radiator panel
(Example)
The following controls are activated.
• Primary current control
• Preventive control for excessive tempe-
rature rise of condensing temperature
• Preventive control for excessive tempe-
rature rise of heat sink
) indicates a switch position.
0.5 s
2 s
1
05
LED
1a
Unit
:
Code
display

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