- 41 -
Troubleshooting Guide
(1)Basic faults diagnose process of 9000BTU~12000BTU
1. The Foremost Inspecting Items
⑴The input voltage must be within +10% tolerance of the rated Voltage. If it is not the case,
the air-conditioner will probably not work normally.
⑵Check the connecting cord between indoor unit and outdoor unit to see if it is properly
connected. The connecting must be done according to the wiring diagram, please also notice
that even different models may have the connecting cord of the same specification.
Please check if the marks at the connecting terminal and the marks on the cord can match,
otherwise, the air-conditioner will not work normally.
⑶If the following phenomena are found, the problem is not from the air-conditioner itself.
NO. Problems Causes
1 The motor is heard operating
but the air-conditioner dose not
work when the indoor unit is
powered on
Since the air-conditioner is powered
on, it will come to working condition as
long as you press the ON/OFF button of
the remote control and the Signal is well
received.
2 The compressor stops running
but the indoor fan motor keeps
working when it is at cooling mode
with the indoor temperature higher
than set temperature.
If you turn off the air-conditioner and
restart it immediately, it will return to
normal in 3 minutes, after that, the
air-conditioner will automatically adjust the
indoor fan speed to what you set.
3 The compressor works
discontinuously at
dehumidifying
mode.
The air-conditioner will automatically
control the working of the compressor
according to the inside temperature
4 The air-conditioner does not
work while the LED display is on.
The TIMER is set with the
air-conditioner; it will be in hold on
condition. If the TIMER setting is
cancelled, the air-conditioner will return to
normal working condition
5 The compressor works
discontinuously at cooling and
dehumidifying mode, and the
indoor fan motor slows down.
The compressor stops internally or
the fan motor slows down to prevent the
indoor heat exchanger from being frozen.
2. No Power Display
⑴Items
a) Check if the input voltage is correct?
b) Check if the AC power supply connecting is correct?
c) Check if the output voltage of the manostat L7805 (IC2) is correct?
⑵Trouble shooting procedure
To Next Page
Loading...
Need help?
General
