IVT 12PHR-N - Setting Air Purifying Filter; Tips on Saving Energy; Energy Saving Strategies

2-1
12PHR-N
CHAPTER 2. EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGRAMS
1. Indoor unit
CPU
DC power supply circuit Rectication circuit
AC Power
Fan motor PWM control circuit Indoor fan motor
Rotation pulse input circuit Fan motor pulse detect
AC clock circuit
Remote controller signal reception circuit Wireless remote control operation
Buzzer driver circuit Audible operation conrmation
CPU reset circuit
CPU oscillator circuit
Room temp detect circuit Room temp. thermistor
Heat exchange pipe themo circuit Heat exchanger pipe thermistor
EEPROM
Louvre angle,fan speed
Select circuit Heat only, Model select
Serial I/O circuit Indoor/Outdoor control signal I/O Unit-unit wiring
(AC power and
Auto restart circuit serial signals)
Test run circuit Test run (forced operation)
Auxiliary mode Auxiliary mode button ON/OFF
Power on circuit Selfdiagnostics,fault diagnosis
Cluster generator drive circuit Cluster generator
Louver motor drive circuit(Horizontal)
How direction control(Horizontal louver
motor)
Louver motor drive circuit(Vertical, right)
How direction control(Vertical louver
motor,right)
Louver motor drive circuit(Vertical,left)
How direction contorl(Vertical louver
motor,left)
LED Drive circuit LED display
3.15A
Fuse
12PHR-N_S530612PHRN.indd 1 2013/8/7 15:41:59