Haier MRV III-RC Service Manual page 155

Valve box LED3 malfunction indicator light flicker 9 times one cycle: malfunction definition [ the
valve box address repeat]
If the valve box PCB
set address by manual
Check if the address of
failure valve box is in
accordance with the set
Measure the fault valve box PCB
with multimeter, check if the ON dial
code is break over, and the OFF dial
code is open circuit
The dial code of valve box
PCB is bad, set other address,
or replace the valve box PCB
No
Yes
Yes
No
151
Power on again and set the address manually in
sequence
No
Reset the address by manual
Yes
Replace the fault valve box to
other system