Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 921 / 1106

FDC-HKX
919
(iv) Check procedure depending on indication lamps (For the outdoor unit)
YES YES YES
YES
NO
NO NO
NO
NO
Power supply
check between R ~ N or
terminal block
Is the paining of
Indoor/outdoor units OK?
Is the connection
of network signal
wires good?
Is there
AC 17V checked
between CNA
2
(blue) ~ (blue)
and AC 8V between (red)
~(red) of outdoor unit
transfomer?
Is it
Nomalized?
Power not supplied.
Power supply wiring
error Repair.
Power supply
reset
Defective outdoor
unit PCB
Pepair the door con-
nection, broken wire of
network signal wires.
Change of unit num-
ber setting
Unit is normal
• Blown fuse (3.15A) Replacement
• Defective transformer
Replcement
• Briken power supply wire in
the unit Repair
(1)
Unit is normal.
(Malfunction by noise) Power supply
reset
Its it
normalized?
YES
NO
Defective outdoor unit
PCB Replacement
(Defective network com-
munication circuit)
Outdoor unit
Red LED
Green LED
Stays OFF
Stays OFF
Indoor unit
Red LED
Green LED
2 time flash
Keeps flashing
Outdoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
1
Error display :
e3
(Detected during operation only)
[Error on the outdoor unit signal line]
Error display :
e3
(Detection at the power on)
[Error on the outdoor unit signal line]
Note (1) No outdoor unit
corresponding to
the indoor unit.