Pioneer WD Series, Руководство по обслуживанию

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2. Other faults
1) The indoor unit works normally but the outdoor unit does not work.
Cause Analysis:
a) If fault code is displayed: If yes, treat according to fault code. If no, check according to the
following steps.
b) If the outdoor fan runs normally (The outdoor fan is started 5 seconds before the compressor is
started, and it is stopped 15 seconds after the compressor is stopped), the client might make
wrong judgment on that the outdoor unit does not work because the compressor working
frequency is low or the system is in shortage of refrigerant. Check the system cooling / heating
effect and confirm if the system is in shortage of refrigerant.
c) Check if the resistance of each temperature sensor is drifted (See appendix for the temperature
sensor parameters): If yes, replace the temperature sensor.
d) Check if the JP3 jumper of indoor control board is soldered. If not, solder the jumper. Then
restart the unit and check what protection code will be displayed. Treat according to the fault
code.
e) Check if the indoor / outdoor and circuit board wiring. Check if the connection is secure.
Please tighten the wires.
2) The outdoor unit is stopped when the air conditioner has run for a period of time
Cause Analysis:
a) If any fault is displayed after stop: If yes, treat according to fault code. If not, check according
to Step (b).
b) Check if the supply voltage is normal, including the voltage change when the air condition is
The wires on U, V and W ends are
respectively colored “red, white and blue”.