Indoor power P.C. board, Indoor electronic control P.C. board, Receiver board, Display board, Switch board
NTXWPH06B112AA NTXWPH09B112AA NTXWPH12B112AA NTXWPH15B112AA NTXWPH18B112AA
32
Indoor electronic control P.C. board
Indoor power P.C. board
Fuse (F11)
Varistor (NR11)
Indoor fan motor
(CN211)
(+)0 or 15 VDC
(+)3-6 VDC
15 VDC
(–) GND (high-
voltage DC)
294/325 VDC
Connector
Terminal Block
(CN201)
Connector to indoor
electronic control
P.C. board (CN202)
Receiver board
(CN301)
Display board
Switch board
Resistor (R111)
GND
5 VDC
GND
Timer short
mode point
JPG JPS
(Refer to 7-1.)
To disable "Auto restart
function" cut the Jumper
wire to JR77. (Refer to 7-4.)
Emergency operation switch (E.O.SW) (SW1)
Connector to indoor
power P.C. board
(CN102)
Indoor coil thermistor
RT12, RT13 (CN112)
9-7. TEST POINT DIAGRAM AND VOLTAGE
12 VDC
5 VDC
i-see SENSOR
MOTOR MT
i-see sensor
~
pin
~
pin
,
,
,
,
pin
~
pin
CN110
Vane motor MV1
(horizontal)
Vane motor MV2
(vertical)
CN151
~
pin
~
26
pin
12 VDC
Room temperature
thermistor RT11 (CN111)
Connector cable (CN24)
Interface
(CN105)
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)
Temperature (°F)
Resistance (kΩ)
32 50 68 86 104 122 140
OBHT872
