Mitsubishi Electric Mr.SERVICE PUHZ-HRP71VHA Service Manual page 83

SW2 setting
Discharge superheat on error occurring
SHd
0~255
ON Cooling = TH4-TH6
Heating = TH4-TH5
1 2 3 4 5 6
Cooling = TH4-T
Heating = TH4-T
Sub cool on error occurring SC
0~130
Cooling = TH6-TH3
ON
Heating = TH5-TH2
Cooling = T
1 2 3 4 5 6
Heating = T
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
-39~88
ON
1 2 3 4 5 6
Replacement operation
W If replacement operation is conducted
ON
even once, "1" is displayed.
If replacement operation time is less
1 2 3 4 5 6 than 2 hrs. "0" is displayed.
U9 Error status during the Error
ON
postponement period
1 2 3 4 5 6
Display detail
(V/YHA)
63HS
(V/YHA2)
63HS
(V/YHA)
-TH3
63HS
(V/YHA2)
-TH2
63HS
83
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.
1: Conducted.
0: Not yet.
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L -phase open error
1
Abnormal power synchronous signal
ACTM error (HRP71, 100V)
Undervoltage
Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L phase open error (04) + ACTM error (20) = 24
1
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
Controller circuit board
02
Controller circuit board
04
Power circuit board
08
Check CNAF wiring.
20
Defective ACTM/ P.B.
Unit
:
:
Minute
:
:
–
Code
display