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11) Fault in drain system- Wired controller shows 08
confirm the malfunction
according to the fault code list
no
yes
Replace water
pump
yes
yes
Clean drain pan
no
Is float switch holder tinted
that float can't move, or too
close to pump motor that
interference arises?
yes
Adjust holder
no
yes
Replace float
switch
no
Replace indoor
PCB
Note: Float switch is close in normal state, when being activated, it is open.
Voltage between both ends is 0V when close, approximately 5V when open.
Unclog pipe and
water pump
Is drain pan dirty and
float switch ineffective?
Is pump motor in
good condition?
Is drain pipe clogged?
yes
Check if float switch is in good
condition with multimeter
confirm the malfunction
according to the fault code list
no
no
no
adjust power
supply
no
no
replace outdoor
PCB
if the failure disappear
after correcting the
wiring
Is there phase loss
or phase failure?
Is fault corrected after
sequence of either two of three
RST phases is adjusted?
Check if the phase detecting
circuit is correct according to
ourdoor wiring diagram
yes
12) Phase loss or phase failure- Wired controller shows 48
-187-