Daikin Super Multi NX C-Series, Service Manual

Page: 240 / 298

SiE12-411
Outdoor Unit (80 / 90 Class)
Removal Procedure 229
6 The figure shows the
controller PCB. S20: Electronic expansion valve
coil A port
S21: Electronic expansion valve
coil B port
S22: Electronic expansion valve
coil C port
S23: Electronic expansion valve
coil D port
S31: To CN14 (Pin 9)
S32: To CN11 (Pin 5)
S33: To S34 (Pin 10)
S40: Overload relay
S71: To S72 (Pin 8)
S80: Four way valve coil
S90: Thermistor (Outdoor air,
heat exchanger, and
discharge pipe)
S92: Gas pipe thermistor
S93: Liquid pipe thermistor
2. Removing the service
monitor PCB
1 Remove the service
monitor PCB by
releasing its tab.
3. Removing the inverter
PCB
1 Remove the 9 screws
of the inverter PCB.
Step Procedure Points
S 90 S 92 S 9 3
S8 0
S 2 3
S 22
S 21
S 20
S 40
S3 1 S 71 S33 S3 2
Rectifier
s t a ck
S ervice monitor
Priority-room s etting ( S W4)
Wiring error check ( S W 3 )
Forced oper a tion ( S W1)
Night qu iet mode ( S W5)
Cooling / he a ting mode lock
( S W2)
LED A
LED 1
LED 2
LED
3
LED 4
T ab
F us e cover
Gl ass t ub e f us e ( 3 A)