Pioneer WD Series, Руководство по обслуживанию

Страница: 15 / 40

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