Friedrich MRM09Y1J Service & Parts Manual

97 PB
TROUBLESHOOTING
Malfunction of Communication E6
Start
Correct connection?
Cut o power supply. Check if
connection line of IDU and ODU
and the wire inside electric box
are correctly connected.
IDU matches with that of ODU?
Communication cord is damaged?
Main board matches
with display board? Main board of
Replace IDU's
main board
Malfunction eliminated?
End
Connect the line
according to
wiring diagram.
Match correctly
according to product
specication
Replace
communication
cord
Replace ODU's
main board.
Malfunction eliminated?
Malfunction eliminated?
Malfunction eliminated?
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
no
no
no

Friedrich MRM09Y1J Specifications

General

Brand	Friedrich
Model	MRM09Y1J
Category	Air Conditioner
Language	English