Nobu NBFS-48IDU Service Manual page 38

In the room,
outside
machine does
not revolve
Has not supplied power
Inspects the air-
conditioner entire
machine electric power
supply
In inspection room
electrically controlled
board
yes
Causes its test run with
another remote control
RST replacement
Inspects the remote
control
Inspects the electrically
controlled board direct current
12V outputvoltage is whether
normal
The survey step enters
(synchronization) the
electrical machinery
coilresistance
Inspects on the remote
control "fixed time to
operate, fixed time
toclose" the switch
Leaks the switch to trip
No
Electric power
breakdown
No
Inspection room
machine remote control
receiver
The original remote
control has the
breakdown
No
Replaces the remote control
Inspects the electrically
controlled board to press the
sensitiveresistance protective
tube whether has burn outt
No
No
Inspects electrically controlled
board direct current 5V to
outputnormally otherwise
No
No
PCB damage
yes
Cancels the timer way
Causes to leak the switch to
reposition
The waiting power supply
or relates with the electric
power company
Replaces the receiver
Inspects the remote
control the battery
No
Inspects at the beginning
of the transformer the
sencondary coilvoltage
In measurement room
No
ventilator electrical
machinery coil
resistance
Replaces PCB