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8.6 Air Quality Sensor Control
20minutes
MAX1
MAX2
MAX3
MAX0
MAX1
MAX2
Maximum of Rs
MAXR1 of previous
measuring period
measuring period
Updating of MAXR
MAX1
MAX0
MAX0
MAX1
MAX0
MAX1
MAX2
MAX1
MAX1
MAX2
MAX1
MAX2
MAX3
MAX2
MAX2
MAX3
MAX2
MAX3
20minutes
20minutes
The following conditions should be fulfilled
The initial MAXR after the preheating of the air quality sensor when the air conditioner is turned on:
The air conditioner will compare the maximum value of the current measuring period (MAX) with the
resistance reference 109 minutes before ( MAXR0) and select the bigger one as the current resistance
reference(MAXR).
When the air conditioner determines the air quality is getting worse: Air quality level 1
Air quality level 2,
MAXR will not be updated; When the air quality gets better (air quality level 0), Rs detected at this time will be
MAX and MAXR.
The air conditioner will not detect the air quality during deicing operation. The indication prior to the deicing
operation will be held during the deicing operation.
(d)
(e)
(f)
Basic Operation
Detecting and indicating of the air quality will not stop during the operation of the air conditioner.
The power of the air quality sensor is always on during the operation of the air conditioner. When the air
conditioner stops (The air conditioner is on standby.), the air conditioner will provide power to the air quality
sensor intermittently (It will be on for 3 minutes after each 109 minutes.) for the purpose of air quality detecting.
Within 2 minutes after the air conditioner starts to operate, the air quality sensor is in the process of preheating
and the air quality indicator is red.
Resistance Reference
Detecting of air quality( During the operation of the air conditioner)
(a) The measuring period is 20 minutes; The air conditioner will measure the resistance (Rs) of the air quality
sensor once each 2 seconds and record the data. The maximum Rs within the 20 minutes will be selected as
Rs(MAX) for this measuring period.
(b) Suppose the current Rs(MAX) as MAX and the resistance reference of the previous measuring period is as
MAXR1.; If MAX>MAXR1, the resistance reference of the current measuring period is MAXR=MAX; If
MAX<MAXR1, MAXR=MAXR1;
(c)
Within 2 minutes after the power of the air quality sensor is turned on, the resistance reference of this
measuring period is the maximum resistance of the sensor during this period.
29
Resistance of air quality sensor: Rs(air)=10k
~50k
( The worse the air quality, the smaller the resistance.)
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Air Quality Control
Detecting of air quality(When the air conditioner is on standby.)
Rs/MAXR will be calculated automatically every 2 seconds and the air quality level will be determined in
accordance with the value below,
Signal of Air Quality Sensor
Air Quality Level
A i r
Q u a l i t y
Getting Worse
A i r
Q u a l i t y
Getting Better
Rs/MAXR
G1
(0)
(1)
Rs/MAXR
G2
(2)
(1)
Rs/MAXR
G3
(2)
(1)
Rs/MAXR
G4
(1)
(0)
Air Quality Level and Indicator
During preheating of the air quality sensor the air quality indicator is red.
The color of the air quality indicator varies with the air quality level:
Air Pollution Level 0: Green
Air Pollution Level 1:Orange
Air Pollution Level 2:Red
(0)
(1)
(2)
*G1=0.85
*G2=0.60
Set the sensitivity number of the air quality sensor as 2 (Standard)
A i r
q u a l i t y
becomes better
A i r
q u a l i t y
becomes worse
Detecting of air quality( When the air conditioner is on standby.)
(a) After the air conditioner stops operation, it will provides power to the air quality sensor intermittently to detect
the air quality and update the resistance reference (MAXR). The power of the air quality sensor will be on for 3
minutes after each 109 minutes.
During these 3 minutes, the air quality sensor will be in preheating process for 2 minutes and the other time is
for measuring the resistance. The air conditioner will compare the maximum resistance measured in this period
with the maximum value in the previous 109 minutes and the bigger one will be selected as resistance
(b)
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Added Operation of Air Quality Sensor
When the air quality getting worse
If the air pollution level changes from 0 to 2, the color of the air quality indicator changes as below,
Green
Orange (2 Sec.)
Red
When the air quality getting better (added operation )
If the air pollution level changes from 2 to o, the color of the air quality indicator changes as below,
Red (60 Sec. )
Orange( 60Sec.)
Green
Judgment during added operation
During added operation, if the air quality sensor judges that the air quality is getting worse, the added operation will
be stopped immediately and the air quality indicator will shift to normal indication. If the air quality getting better,
the air conditioner will judge the air quality until the added operation is finished.
Sensitivity Control of Air Quality Sensor
The sensitivity number can be changed through the following procedure
<Setting Sensitivity Number>
1.Keep the SET button on the remote control depressed continuously for 5 seconds to select sensitivity control
m ode.
2.The previous sensitivity setting will be displayed in the temperature display.
3.Press
or
button on the remote control to change the sensitivity
“0”=Turn off the air quality indicator
“1”= Low Sensitivity
“2”=Standard Sensitivity
“3”=High Sensitivity................
…………....G1=0.70, G2=0.45, G3=0.48, G4=0.73
………G1=0.85, G2=0.60, G3=0.63, G4=0.88
G1=0.90, G2=0.65, G3=0.68, G4=0.93
Within 10 seconds after the sensitivity setting is finished, other settings are not available. The display of the remote
control will change back to normal without pressing any button.
Forced Resetting
Forced Resetting Time (The added operation time mentioned later not included.)
(a) Air Pollution Level 2: Red: 5 minutes
Orange: 8 minutes
Green
(B) Air Pollution Level 1: Red: 5 minutes
Orange: 8 minutes
Green
Timer Resetting
When the forced resetting mode is determined and the following conditions are fulfilled, the timer is reset.
1) The air quality changes which results in the changing of the color of the air quality indicator.
2) Compare Rs detected in current 2 seconds with R1 detected in previous 2 seconds and Rs/R1<0.95.
3) Suppose Rs detected in previous 3 minutes is R2 and Rs/R2
0.87.
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8.7Demo Mode ( Outdoor unit not needed)
Activate the demo mode:
In demo mode, the air conditioner can be operated(if the outdoor unit is connected to the indoor unit); Whenever
you turned off the air conditioner, it will restart automatically into demo mode opertion.
Keep the AUTO button on the indoor
unit depressed continuously for 15
seconds until 3 beeps are heard and
the demo mode is activated.
unit depressed continuously for 15
seconds until 3 beeps are heard and
the demo mode is activated.
T u r n o f f t h e a i r
conditioner
conditioner
Demo mode operation will be
r e s t a r t e d a u t o m a t i c a l l y i n 1
minute.
r e s t a r t e d a u t o m a t i c a l l y i n 1
minute.
Cancel the demo mode:
Keep the AUTO button on the indoor unit depressed continuously for 15 seconds until 3 beeps are heard.
AUTO
TEST RUN
SOUND
DEMO
ON
1“BEEP”
2“BEEP”
3“BEEP”
5seconds
10seconds
15seconds
Demo operation control( Air quality indicator and Ventilator Interlocking Unit signal)
Color of air quality indicator
Ventilator Interlocking
U n i t
U n i t
O N / O F F
ON
OFF
5 seconds
5 seconds
5 seconds
5 seconds
5 seconds
5 seconds
5 seconds
Red
Orange
green
Orange
Green
Orange
Red
10 seconds
20 seconds
8.8Ventilator Interlocking Unit Control (Optional)
Purpose: The air conditioner will control the operation of the ventilator (optional) according to the signal of
the air quality sensor when displaying the air quality.
To use this function, a ventilator and a ventilator interlocking unit should be purchased.
Devices: Ventilator, Ventilator Interlocking Unit (wireless)
Control Specification:
Air quality getting worse
Air quality getting better
ON
OFF
ON
Green
Oriange
Red
ON
OFF
Green
Oriange
ON
Red
15 minutes after the air conditioner is
Turned on:
Turned on:
Ventilator ON: Air quality indicator is red or
orange.
Ventilator OFF: Air quality indicator is green
Ventilator OFF: Air quality indicator is green
or the air conditioner is turned off.
Within 15 minutes after the air conditioner is
turned on, the ventilator will not operate even
though the air quality indicator is red.
Power supply:220V-240V~50/60Hz
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