Mitsubishi Electric PUHZ-RP250YHA2 Service Manual page 71

SW2 setting
Discharge superheat on error occurring
SHd
0~255
ON
Cooling = TH4-TH6
Heating = TH4-TH5
1 2 3 4 5 6
Subcool on error occurring SC
0~130
ON
Cooling = TH6-TH3
Heating = TH5-TH2
1 2 3 4 5 6
Thermo-on time until error stops
0~999
ON
1 2 3 4 5 6
Indoor pipe temperature / Liquid
(TH2 (3))
ON
Indoor 3
-39~88
1 2 3 4 5 6
Indoor pipe temperature / Cond./ Eva.
(TH5 (3))
Indoor 3
ON
-39~88
1 2 3 4 5 6
U9 Error status during the Error
postponement period
ON
1 2 3 4 5 6
Display detail
71
Explanation for display
0~255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example) When 150°C;
0.5 secs.
0~130
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example) When 115°C;
0.5 secs.
0~999
(When it is 100 minutes or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 415 minutes;
0.5 secs.
-39~88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
-39~88
(When the temperature is 0°C or less, "–" and
temperature are displayed by turns.)
When there is no indoor unit, "00" is displayed.
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L -phase open error
1
Abnormal power synchronous signal
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
0.5secs. 2 secs.
1 50
0.5secs. 2 secs.
1 15
0.5secs. 2 secs.
4 15
Detection point Display
00
—
Power circuit board 01
Power circuit board
02
Controller circuit board
04
Power circuit board
08
Unit
Minute
Code
display