Service manual

75
SW2 setting
Display detail
Explanation for display Unit
:
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. 0.5secs. 2 secs.
Sub cool on error occurring. SC
0~130
Cooling = TH6-TH3
Heating = TH5-TH2
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. 0.5secs. 2 secs.
Thermostat-on time until error stops
0~999
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. 0.5secs. 2 secs.
Indoor pipe temperature / Liquid
(TH2 (3))
Indoor 3
-39~88
-39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature / Cond./ Eva.
(TH5 (3))
Indoor 3
-39~88
-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.
50
1
:
1
ON
2 3 4 5 6
Discharge super heat on error occurring
SHd
0~255
Cooling = TH4-TH6
Heating = TH4-Th5
Replacement operation
WIf replacement operation is conducted
even once, “1” is displayed.
If replacement operation time is less
than 2 hrs. “0” is displayed.
1
ON
2 3 4 5 6
1
ON
2 3 4 5 6
1
ON
2 3 4 5 6
1
ON
2 3 4 5 6
1
ON
2 3 4 5 6
:
Minute
:
–
1: Conducted.
0: Not yet.
15
1
15
4
1
ON
2 3 4 5 6
Normal
Overvoltage error
Undervoltage error
Input current sensor error
Abnormal power synchronous signal
PFC error (RP1.6-3VHA)
(Overvoltage / Undervoltage / Overcurrent)
PFC/ ACTM error (RP1.6-6VHA)
Undervoltage
W Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
T phase interruption (04) + PFC error (10) = 14
Power circuit board
Controller circuit board
Controller circuit board
Power circuit board
Power circuit board
Check CNAF wiring.(RP4-6YHA)
Defective ACTM/ P.B.
—
Description Detection point Display
00
01
02
04
08
10
20
U9 Error status during the Error
postponement period
Code
display
OC294-D-3.qxp 05.3.9 11:04 AM Page 75