Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 1078

FDC-HKXR
(iii) Check procedure depending on indication lamps (For the outdoor unit)
1
Error display:
(Detected during operation only)
Indoor unit
Red LED 2 time flash
Green LED Keeps flashing
Outdoor unit
Red LED Stays OFF
Green LED Stays OFF
Power supply
checked between R~N or
terminal block
NO
Power not supplied.
Power supply wiring
error→Repair.
Outdoor unit
Red LED Stays OFF
Green LED Keeps flashing
1076
[Error on the outdoor unit signal line]
Is there
AC 17V checked
YES
between CNA (blue) ~ (blue)
2
and AC 8V between (red)
~ (red) of outdoor unit
transfomer?
NO
•Blown fuse (3.15A) →Replacement
• Defective transformer→
Replcement
• Broken power supply wire in
the unit Repair
Is the pairing of
Indoor/outdoor units OK?
NO
Change of unit num-
ber setting
Note (1) NO outdoor unit corre-
sponding to the indoor
unit.
YES
Power supply
reset
Defective outdoor
unit PCB
Is the connection
YES
of network signal
wires good?
(1)
Repair the door con-
nection, broken wire of
network signal wires.
Is it
YES
Unit is normal
Normalized?
NO
NO