8
le
ower
o the
e
rmal?
ge between
rminal
k
er ON/OFF
te controller
he
ep two
?
splay
?
ctor on display
o control PCB
ay PCB itself
Check power supply mains
or interconnection wires
Check the wiring of indoor
Is the
switch position
on switch pannel at
"Remote"
Does
control PCB
status LED repeat one
second "on and
off"?
• control PCB fault
• Micom or reset
IC fault
• Check the remote signal receiver
• Check the connection between signal
receiver and control PCB
Place the switch
position to the
"Remote" and then
Check it once
more
YES
YES
NO
NO
NO
NO
NO
Summary of Contents for DSB-070L
Page 37: ...PCBDRIVINGDESCRIPTION ...
Page 53: ...49 5 U9 KIA7042P RESET IC KIA70 42P OUTLINE INPUT GROUND OUTPUT VCC 1 3 2 OUT GND ...
Page 58: ...54 3 EXPLODED DIAGRAM Indoor Unit DSB 070L DSB 091L ...
Page 60: ...56 DSB 121L ...
Page 63: ...59 4 EXPLODED DIAGRAM Outdoor Unit DSB 070L DSB 091L DSB 121L After ...
Page 66: ...62 DSB 121L Before ...
Page 69: ...65 5 CONTROL BOX ASSEMBLY 4 3 9 8 5 6 1 0 7 2 DSB 070L DSB 091L ...