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(6) Display EP
Symptom
Cause
S/N
Check the insert position CN3 of the
compressor top temperature switch
wires on outdoor power source
1
board
No switch on compressor top
Compressor
temperature.
The
temperature
2
is very high,
accompanied
with
bad
smell.
Compressor
3
temperature is not high. Short
circuit CN3.
Inspections
Check the U, V and
W
wires
of
the
compressor.
Check the system
pressure.
Check the outdoor
ventilation and if
there
is
any
obstruction
that
affects the normal
radiating of the air
conditioner.
temperature:
The
Display EP
Temperature switch fault ( on top of the
compressor)
How to Solve
Insert again if loose.
Jumper short-circuiting (This
function not provided for 1 –
1.5P unit)
The correct sequence of U. V
and W wiring shall be "red,
white and blue". Connect again
if incorrect.
The pressure
is low.
refrigerant to ensure the system
pressure is normal.
Install to the position as required
in the Instruction Manual and
ensure the air inlet and outlet of
the outdoor unit is smooth.
If the fault is solved after short
circuiting, replace the shell
temperature switch.
If the fault remains unsolved
after
replacing
temperature
switch,
replace
the
outdoor
source board.
14
Remarks
Photo 10
Photo 11
Add
Photo 12
the
shell
please
power
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