Haier MRV 5 Series Troubleshooting Manual page 80

A. One wired controller controls one indoor unit the wired controller connects with the ABC teminal of indoor unit.
Indoor
A.
P Q A B C
Wired
controller
B. Two wired controllers control one indoor unit. Either of the wired controls can be set to the master wired controller
while the other is set to the salve wired controller.
Master and salve controller setting method for YR-E17,other controllers' setting method please refer to the controller
manual.
No.
SW1-1
C. One wired controller controls multiple units.
Check if the communication
method is right?
B.
A B C
Type
Select the master or
the slave controller
Reconnect
Indoor
P Q A B C
Wired
A B C
controller
State of switch
ON
OFF
77
Wired
A B C
controller
Function description
Slave controller
Master controller