Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 930

FDC-HKX
Error display : e46
17
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Are automatic
address and manual address
coexstent on the same
network
Defective outdoor unit PCB
Replacement
(d) How to advance checks for each faulty symptom
(i) Inspection method when there is no error display
1) Four way valve does not switch during heating operation
Power supply
detected between outdoor
unit terminal T5~PCB
faston terminal T6
(black)?
NO
Defective outdoor unit PCB
Replacement
928
Automatic address setting and manual address
setting coexstents in the same network
Outdoor unit
Red LED
Green LED
YES
NO
YES
1 time flash
Keeps flashing
Repair to manual address
Defective 20S
Replacement