19
x
★
Compressor
drive in trouble
a.
The outdoor drive board is failure;
b.
The compressor is failure
c.
The outdoor control board is
failure
20
★
x
Outdoor fan
motor locked
rotor protection
a.
The connection of the outdoor fan
motor is loose;
b.
There are something block the
outdoor fan;
c.
The fan motor is failure;
d.
The outdoor control board is
failure
21
x
x
Outdoor coil
anti-overload
protection with
cooling
a.
The refrigerant is too much;
b.
The outdoor fan motor is failure;
c.
The outdoor fan is broken;
d.
The condenser is dirty;
e.
The air inlet and air outlet of the
indoor unit and the outdoor unit is
not normally
22
Compressor
pre heating
process
It is normal mode in cold weather
24
Chip in outdoor
board in trouble
a.
Using the wrong drive board;
b.
Using the wrong compressor.
26
Overheated
outdoor radiator
a.
Radiator sensor fails
b.
Detection circuit of the
sensor on the control panel
fails
27
Protection
against too high
system
pressure
a.
The pressure switch fails
b.
The pressure detection switch
on the control panel fails
c.
The measured value of
system pressure exceeds the
limit
33
★
The failure for
temperature
sensor of
indoor room
d.
The indoor room temperature
sensor loose;
e.
The indoor room temperature
sensor is failure;
f.
The indoor control board is
failure.
34
x
The failure for
temperature
sensor of
indoor coil
temperature
d.
The indoor coil temperature
sensor loose;
e.
The indoor coil temperature
sensor is failure;
f.
The indoor control board is
failure.
-
38
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Summary of Contents for WHS09SZA11S
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