3. Alignment and Adjustments
3-1 Test Mode
Q How to Approach Test Mode
You can approach the Test Mode by pressing the on/off switch of
indoor unit for 5 seconds.
Q Test Mode Operation Option
After installing the air conditioner, check whether each subordinate is normally operated or not by operating the Test Mode.
• Temperature Display Part : Display the set option at one-second intervals. (Only for models having the temperature display part)
ex) 0b0000-1730F8 : 0b
→
00
→
00
→
17
→
30
→
F8
→
0b ...(Repeat)
• When an error occurs, display the Error Mode.
LED Display
Cause Follow-up Measures
Waiting Operation
LAMP
OPERATION TIMER TURBO
Indoor temperature
sensor error
(OPEN / SHORT)
•
Check assembling status of the sensor part’s
connector on the indoor unit main PCB
• Measure the resistance value on both sides –
connector no. 1 and no. 2 (E1), no. 3 and no. 4
(E2) – by separating the sensor part’s connector
Indoor heat exchanger
temperature sensor error
(OPEN / SHORT)
Indoor fan motor speed
detecting error
(Occur when it continues
for 15 seconds at below
450rpm)
• Check assembling status of the Motor Hall IC
output connector (CN44) on the indoor unit
main PCB
EEPROM error
(Option memory)
* Display only for models
having the returning
function for the power fail-
ure
• Reset options
• Replace the PCB
Blink all lamps
When there is an option
related error
When options are not set
When there is an option
data error
• Reset options
* If not meet the above DATA, replace sensors.
Temp.
(°C)
Resistance
Value(KΩ)
Temp.
(°C)
Resistance
Value(KΩ)
Others
15 14.68 30 8.31
20 12.09 35 6.94
25 10.00 40 5.83
The error of
DATA is
±2%.
on/off switch
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