– 2
9
–
8-2. Outdoor Unit (Inverter Assembly)
220–240 V
~
50Hz
MICR
O-COMPUTER BLOCK DIA
G
RAM
Driver circuit
of P.M.V.
Heat exchanger
temp.sensor
Suction temp.
sensor
Outdoor air temp. sensor
Discharge temp. sensor
Indoor unit send/receive
circuit
Relay circuit
Noise Filter
Converter (AC
→
DC)
Clock
frequency
4MHz
High Power
factor Correction
circuit
Input current
sensor
• PWM synthesis function
• Input current release control
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
• Signal communication to indoor unit
P.M.V.
: Pulse Motor Valve
M.C.U. : Micro Control Unit
M.C.U
For INDOOR UNIT
4-way valve
P.M.V.
Inverter
(DC
→
AC)
Gate drive
circuit
Gate drive
circuit
Inverter
(DC
→
AC)
Outdoor Fan motor
Compressor
MCC5009 (P
.C.B)
OUTDOOR UNIT
Current detect
Current detect
