AUKS AFC-1000CF/4, Technical Manual

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Service Manual
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2.9 Remote control
a) Remote controller has function of remote control;
b) Remote control switch can be shielded by dial code of indoor unit;
c) When remote switch disconnects, unit shuts down and can’t be started by remote controller or wired
controller;
d) When remote switch closes, unit starts up in auto mode that can be changed by remote controller or
wired controller.
2.10 Water level protection and water drainage pump control
To prevent the condensed water of the indoor unit from damaging the indoor unit or interior decoration, a
lift pump shall be used to discharge the condensed water. The working sequence of the lifting pump
depends on the condition of the water level switch.
During the first power-on, the water drainage pump will operate for 180 seconds. Under cooling and
dehumidifying mode, the water drainage pump will always operate at an energized manner.
Whenever a water level action is detected, the water drainage pump is running , a trouble code “A4”will
display. The minimum operating time of the water drainage pump is 1 minute; If the water level switch is
still not recovered after 30 minutes, the water drainage pump will continue to operate; in this case, the
trouble will not be recovered, which is only possible at the next power-on ,after the unit is turned off.
3. Poor efficiency explanation
During the process of using air conditioner, some phenomenon seems to be malfunction but actually not.
Thus when cooling effect does not
achieve
to your expectation, the following factors have to be
ruled out
Phenomenon Causing explanation
Power voltage is too low, causing AC uneasy
to start and shut down after starting, or fuse
be burned out etc. It is not malfunction, need to find out the causing, if the causing is the
electricity net voltage is too low, user should load a power manostat to
keep voltage between 220V-380V for AC normally running
Select high wind speed but indoor
temperature still at high side, air flow from the
air outlet is too weak.
It is because air filter is too dirty or blocked making cooling capacity fail
to be brought by air flow, causing cooling capacity inadequate. Take out
filter and wash, the problem will be solved.
Select high wind speed, the vibration and
sound of unit are severe. Fan runs at high speed, severe vibration and sound of unit is normal
phenomenon
Improper installation will lead to indoor
temperature uneven or bad cooling effect.
It is necessary to adjust AC installation position
4.Electric components malfunction inspection
No
Component
name
Inspection methods
1 Control board
1. Check if any connection part of PCB loosen or drop off, printed tinsel and
components have any burn, fade, breaking off or aging phenomenon, all joints exist
short circuit phenomenon etc.
2. Test the circuit board system in the term of voltage, pulse on, resistance variation,
by using testing meter.
3. Judge the output and input is normal or not according to electric principle diagram
2 Capacitor
1. No expansion phenomenon apparently
2. Measure capacitor by using capacitor phase of multi-meter( if the multi-meter has
no capacitor phase, use ohm phase, contact the two terminal of meter to two feet of
capacitor, and quickly switch positive pole and negative pole and reconnect, the
resistance should display from nil to infinite quickly. The resistance can’t change is
always nil or infinite).
3 Motor
1. No burning trace apparently
2. Using multi-meter ohm phase, there is correct resistance value among windings
(single phase compressor refers to specification, three phase compressor