4) The wire control organ displays the alarm signal with "E2"
"E2" means indoor piping temperature sensor is abnormal
Notation: The resistance of piping temperature sensor is 10K
8) The wire control organ displays the alarm signal with "E8"
"E8" means malfunction of communication between control panel and indoor units
begining
the alarm signal of wire
control organ is E2
if the position of piping
Temp.sensor is right
Y
if the resistance of
the sensor is right
N
replacing the sensor
begining
if the wire control organ can
matches the PCB of indoor units
Y
if the four ports on wire control
connected corresponding
with the port on PCB of indoor unit
Y
if the ports:A,B,C and
D are connected well
Y
if the potrs A and B,or
C and D are short
N
amend the position
of sensor
Figure 7-6
N
replacing the wire
control organ
N
connect the
wire correctly
connect the
N
wire correctly
connect the
N
wire correctly
Figure 9-7