AUX Q Series User Manual

28
Spe
cial attention
Most Indoor Unit temperature sensors of the frequency conversion
machine have a resistance value of 15KΩ.
Do not use improper sensor during repairing and maintenance, or it
may led to the wrong temperature sensing of the machine, the start
error or shutdown error. You can switch the air conditioner to the
“Blowing” mode, and judge the accuracy of sensor though
environmental temperature displayed on the screen.
In case a sensor with the resistance value over 15KΩ is used, the
detected temperature will be much lower than the actual temperature,
which may lead to the shutdown error under heating mode, or the
startup error under cooling mode.
In case a sensor with the resistance value below 15KΩ is used, the
detected temperature will be much higher than the actual temperature,
which may lead to the startup error under heating mode, or the
shutdown error under cooling mode.
（
3
）
E2 -O
utdoor Unit coil sensor error
Explanation of
error
Cause: The detection of short circuit or open circuit of Outdoor Unit
coil sensor during the inspection of Outdoor Unit main PCB, indicated
by “Outdoor Unit coil sensor error”.
Inspection path: Sensor→Sensor wire→Connectors→Outdoor Unit
main PCB
T
ool
s
required
for inspection
Multimeter, 20KΩ standard sensor (25℃）
F
re
quent
problematic part
Outdoor Unit coil sensor, Outdoor Unit main PCB
Ins
pection
procedure and
key points
1. Check whether there’s resistance problem, short circuit or open
circuit in the sensor; the resistance value shall with a reasonable range
(about 20KΩ for frequency conversion machine)
2. Check whether the sensor wire is broken.
3. Check whether the terminal connectors are well fixed; check
whether the weld between the terminal and the main PCB is loose, and
pull the terminal slightly for inspection if necessary.
4. Check whether the sensor is affected with damp. The coil sensor is
quite easy to be affected with damp in case the lead of coil sensor is
above the copper pipe.
5. In case no standard sensor is available at present, replace the
temperature sensor of Outdoor Unit coil by other sensor asides, and
then check whether the error still exists; if the error disappears, replace
the sensor; if the error still exists, check the Indoor Unit main PCB and
change if necessary.

AUX Q Series Specifications

General

Refrigerant	R32
Energy Efficiency Class Cooling	A++
Energy Efficiency Class Heating	A+
Type	Split System
Features	Sleep Mode, Turbo Mode, Self-Cleaning
Energy Rating	5 Star
Filter Type	Anti-Bacterial Filter
Warranty	5 Years
Cooling Capacity	12000 BTU/h
Heating Capacity	12000 BTU/h