◆
Check point of inverter outdoor unit
CAUTION
-
HIGH VOLTAGE
High voltage is produced in the control box. Don't touch
electrical parts in the control box for 5 minutes after the
unit is stopped.
Color
Color symbol
RD
Mark
Yellow／GreenYG
BlackBK
BlueBL
YellowYE
WhiteWH
Red
★
▷ Check of power source
・Check the power
source on L and N of TB1.
(It is normal if AC220/240Vis detected.)
＊
Noise filter check
There should be coninuity, and
there should be no short-circuit between phases.
▷ Diode module parts check
there should be no short-circuit
▷ Main capacitor check
Normal voltage for Vdc (Between C57 (+)
and C57 (-)) is about 311 Vdc (at Vac =220V)
▷ Power transistor module parts check
Check by inverter checker or resistance
measurement check by tester (See page 52
and 53 for details .)
Please. (See page 52 and 53 for details .)
CNFAN
3-4 pin 15V
4-6 pin 311 Vdc (at Vac = 220 V)
Power circuit
input：Vdc= about 311Vdc
(at Vac = 220 V)
out put ：20V, 15V, 13V, 5V
▷ Check of communication
・Check the communication
2/N and 3 of TB2.
Normal voltage is DC 20V.
▷ Reactor check
Normal value about 10 mΩ
TH2
4-WAY VALVE
TH1 :
HEATEXCH, LIQUID PIPE TEMPERATURE SENSOR
TH2 : OUTDOOR AIR TEMPERATURE SENSOR
TH3 : DISCHARGE PIPE TEMPERATURE SENSOR
TH1
TH3
＊
▷ Check with power ON at the points marked with ＊.
▷ Check with 52X2 ON at the points marked with ★.
52X2 is turned on when an operation command is executed from the remote control.
PCB ASSY (SUB) PCB2 PCB ASSY PCB1
'22 • PAC-SM-412
-
48
-
To Next Page
Loading...
