Mitsubishi Electric PUHZ-SHW230YKA2 Service Manual page 50

SW2 setting
Pipe temperature/Liquid
(TH2 (3))
ON
Indoor 3
−39 to 88
1 2 3 4 5 6
Controlling status of compressor
operating frequency
ON
1 2 3 4 5 6
Outdoor suction pipe temperature (TH32)
−39 to 88
ON
1 2 3 4 5 6
LEV-C opening pulse
0 to 480
ON
1 2 3 4 5 6
Comp. surface thermistor (TH34)
−52 to 221
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
OCH594B
Display detail
The black square (
Explanation for display
−39 to 88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
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
−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 480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
−52 to 221
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
(When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 105:;
0.5 s
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L1-phase open error
Abnormal power synchronous signal
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
50
■
) indicates a switch position.
LED
1a
0.5 s 2 s
15
0.5 s 2 s
1 05
Display
00
01
02
04
08
Unit
:
Code
display
:
Pulse
:
Code
display