Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 922

FDC-HKX
Error display : e5
2
Indoor unit
2 time flash
Red LED
Keeps flashing
Green LED
Outdoor unit
Stays OFF
Red LED
Stays OFF
Green LED
Note (1) This case is limited to the separate power supplies to indoor/outdoor units. (Combination of (indoor unit) red LED 2 time flash and (outdoor unit) green LED stays off
means that the power supply to the outdoor unit has been interrupted during operation.)
Outdoor unit
Red LED
Stays OFF or
Keeps flashing
Stays OFF or
Green LED
Lights continuously
Outdoor unit
Stays OFF
Red LED
Keeps flashing
Green LED
Notes (1) Check for poor connection (looseness, misconnection) at out-
door unit terminal block and droken signal wires between out-
door units.
(2) Check the poor connection or broken signal wires between in-
door/outdoor units.
920
[Outdoor unit signal line error, power supply error]
Did turn off
the power of outdoor
unit during
operatioon?
NO
• Blown fuse?
• Broken or loose wire at L
N Phase?
• Was not there the power failure?
Power supply reset
(1)
YES
Power supply
ON
, L or
1 2
Malfunction due to noise, etc.
Is it
YES
(Out of control CPU of outdoor
normalized
unit due to noise during power
on)
NO
Defective outdoor unit
PCB Replacement
(Defective network
communication circuit)
(1)
Signal wire
YES
poor connection at
outdoor
unit?
NO
(2)
Signal wire
YES
poor contact between
indoor/outdoor
unit?
NO
Power supply reset
Is it
YES
normalized
Defective outdoor unit
PCB Replacement (De-
fective network communi-
cation circuit)
Repair
Repair
Unit is normal.
(Malfunction by
accidental noise)