Mitsubishi Electric PUHZ-P200YKA.UK Service Manual page 74

SW2 setting
Indoor pipe temperature/Liquid (TH2 (3))
Indoor 3
ON
−39 to 88
1 2 3 4 5 6
Indoor pipe temperature/Cond./Eva. (TH5
(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
Time to current limit activates from com-
pressor turns ON.
ON
0 to 180
1 2 3 4 5 6
Detailed code of check code U9
ON
1 2 3 4 5 6
OCH582B
Display detail
The black square ( ) indicates a switch position.
Explanation for display
−39 to 88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
−39 to 88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
When there is no indoor unit, "00" is displayed.
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 heat sink
(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
0 to 180
Description
Normal
Overvoltage error
Undervoltage error
T open-phase
Abnormal power synchronous signal
Defective power board
Q1 current, overvoltage
74
LED
1a
Detected at Display
— 00
Power board 01
Power board 02
Controller board 04
Power board 08
Power board 10
Unit
:
:
Code
display
Seconds
Code