Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 923

Error display : e30
3
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Connection of indoor and
outdoor unit OK?
Defective outdoor unit PCB
Replacement
e3 1
4 Error display :
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Is the unit
No. duplicated on
outdoor units?
Defective outdoor unit PCB
Replacement (Defective unit
No. read circuit)
e32
5 Error display :
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Is there antiphase on
power supply?
Is L3 phase open at
52C primary side?
Defective outdoor unit PCB
(Defective antiphase detection
circuit) Replace
[Connection error indoor and outdoor unit]
Red LED
Green LED
NO
Repair
YES
[Duplicated unit No. of outdoor units]
Outdoor unit
Red LED
Green LED
YES
Correction
NO
[Antiphase on power supply or open 52C L3 phase (primary side) on power supply]
Red LED
Green LED
YES
Correction
NO
YES
Correction
Outdoor unit
1 time flash
Keeps flashing
1 time flash
Keeps flashing
Note (1) When the PCB is defective, the flash patterns of outdoor
unit red LED, green LED may become irregular.
Outdoor unit
1 time flash
Keeps flashing
Note (1) Wrong wire connection of the antiphase
Is antiphase detection
circuit wired properly?
NO
Correction
FDC-HKX
detection circuit is suspected occured
during replacement of the outdoor unit
PCB. Replacement work should be per-
formed carefully.
(1)
YES
921