Pioneer WD Series, Руководство по обслуживанию

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started. If the voltage is unstable or changes too heavily, please check the power source. If no
problem, check according to Step (c).
c) Check if the temperature sensors are normal (See appendix for the temperature sensor
parameters). Check if the resistance is drifted, open circuited or short circuited. If yes, replace
the sensor. If normal, check according to Step (d).
d) Check if the indoor / outdoor circuit connection and power connection are in good contact. If no,
tighten the connection wires. If yes, check according to Step (e).
e) 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.
f) Check if the refrigerant is too much or too less. If yes, add refrigerant.
3) The air conditioner is tripped when it is started.
Cause Analysis:
a) Check if the user's power source plug is correctly connected (for example, the ground wire
might be wrongly connected as the neutral wire)
b) Check if the indoor / outdoor circuit and the wiring terminal are correctly connected, and if
there is short circuiting.
c) Check if the outdoor circuit board, wiring terminal and power connection wires are damaged,
and if there is short circuiting to the metal parts.
d) Check if the rectifier bridge of outdoor controller (See appendix for its bridge) is short circuited
(The short circuiting of rectifier bridge will probably cause tripping error).
4) The complete unit does not work
Cause Analysis:
a) If fault code is displayed: If yes, treat according to fault code. If no, check according to Step (2).
b) Check if the power plug is electrified. If no, check the power source. If yes, check if the
controller fuse is good.. If no, replace the fuse. If yes, check according to Step (3).
c) Check if the resistance of the sensors on indoor and outdoor units is drifted. If yes, replace the
sensor. If no, check according to Step (4).
d) Check if the indoor and outdoor communication is failed. The step is same as that for check
when the indoor unit works normally but the outdoor unit does not work.