Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 921

(iv) Check procedure depending on indication lamps (For the outdoor unit)
e3
Error display :
1
(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
check 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
e3
Error display :
(Detection at the power on)
Outdoor unit
Red LED Stays OFF
Green LED Keeps flashing
[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)
• Defective transformer
Replcement
• Briken power supply wire in
the unit Repair
Is the paining of
Indoor/outdoor units OK?
NO
Change of unit num-
ber setting
Note (1) No outdoor unit
corresponding to
the indoor unit.
[Error on the outdoor unit signal line]
Power supply
reset
YES
Power supply
reset
Replacement
Is the connection
YES
of network signal
(1)
Pepair the door con-
nection, broken wire of
network signal wires.
YES
Its it
normalized?
NO
Defective outdoor unit
PCB Replacement
(Defective network com-
munication circuit)
FDC-HKX
YES
Is it
Unit is normal
Nomalized?
NO
Defective outdoor
unit PCB
wires good?
NO
Unit is normal.
(Malfunction by noise)
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