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12-5. Flap Motor Does Not Work
12-5-1. Louver Motor Defective
➀ Set to cooling operation with flap to oscillate (movie) using remote controller and measure voltage applied to
the louver motor at FLAP terminal of 5P connector.
In case of abnormality ➞ Replace indoor unit PCB.
No abnormalities, proceed to check
➁
.
*Use a circuit tester (set to DC range).
Normal
Color Output Voltage
WHT and each BLU wire DC 1 – 12 V (pulse)
*Use a circuit tester (set to Ω range).
Normal
Color Resistance
WHT and each BLU wire 300 – 450 Ω
➁ Disconnect FLAP of 5P connector for louver motor and measure resistance.
In case of abnormality ➞ Replace louver motor.
No abnormalities, check if there is physical or mechanical interference to louver movement.
12-6. Heating Operation Not Possible
12-6-1. Thermistor 1 Defective
Failure Display on Outdoor Unit PCB: ●● ●● ●●
Check Thermistor 1 (CN15).
➀ Disconnect Thermistor 1 connector (3P, BLK) from outdoor unit PCB, and measure resistance on Thermistor 1
side.
In case of abnormality ➞ Replace Thermistor 1.
Temperature Resistance
Normal
68°F (20°C) 6.0 – 7.1 kΩ
86°F (30°C) 4.0 – 5.0 kΩ
140°F (60°C) 1.5 – 1.7 kΩ
Temperature Resistance
Normal
68°F (20°C) 6.0 – 7.1 kΩ
86°F (30°C) 4.0 – 5.0 kΩ
140°F (60°C) 1.5 – 1.7 kΩ
12-6-2. Thermistor 2 Defective
Failure Display on Outdoor Unit PCB: ●● ● ●● ●●
Check Thermistor 2 (CN16).
➀ Remove Thermistor 2 connector (3P, RED) from the outdoor unit PCB, and measure resistance on the
Thermistor 2 side.
In case of abnormality ➞ Replace Thermistor 2.
