Part 3
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3
if fan motor runs
no
no
no
no
if the other indoors
be gin t o r un
yes
yes
yes
yes
yes
yes
if voltage among
B, C on wired
controller is AC
15V
if voltage between
B and C on indoor
terminal b lock is
15V
1. indo or PCB ab no rm al
2. wi r ing of in do or PCB
is da mage d o r the po rt
is not insert ed well
no
in heating mode, fan
moto r not run and
"PRE HEAT"
" DEFROST" on LCD
of wired controller will
be light.
1. in pre-heating
startup
2. in ref rig erant oil
return control of
heat ing m o de
3. in heating defrosting
4. TC2 se nsor resisto r
wrong
if the indoor
motor runs
wi ring be tween
in do ors an d wir ed
controller is wrong
wir i ng b etwee n
indoors and wired
controller is wrong
if fan motor
rotation direction
is correct
fan capacitor abnormal
1. f ilte r clog ged
2. in do or he at exchan ge r
clogged
if indoor fan motor is
with AC 2 20V vo ltage
check the power source
voltage
1. indoor PCB abnormal
2. wiring of indoor PCB is damaged or the port is not
inserted well
no
remove the fan motor
wiring
indoor motor abnormal
no
noyes
yes
if indo or m oto r win di ng
resistor is normal
if capacitor
capacity is
prop er
indo or f an cap acitor a bn or mal
wiring of indoor PCB is damaged or the port is not
inserted well
- 110 -
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