Haier AB092ACBHA, Руководство по обслуживанию, Страница: 301 / 365

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no
if failure disappear after
PCB is changed
indoor PCB failure
indoor/outdoor
temp. too high
modify indoor
motor or fan
capacitor
start
Is pipe temperature
sensor in good
condition?
Is filter or indoor
heat exchanger
dirty?
no
Replace indoor coil
sensor
cleaning
In heating mode, indoor motor
speed too low or stop?
10) Overload in heating cycle
yes
yes
yes
yes
no
no
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.
no
Adjust bracket
Is float switch holder tinted
that float can't move, or too
close to pump motor that
interference arises?
Check if float switch is
in good condition with
multimeter
Replace float switch
if the drain pan is too
dirty to cause the invalid
float switch
if pump motor is
normal
clean drain pan
replace pump motor
Is drain pipe blocked?
yes
clean the drain pipe
and water pump
11) Fault in drain system
Confirm float switch failure
according to the fault code list
no
yes
yes
yes
no
no
no
yes
Replace indoor PCB
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