12-5. Flap Motor Does Not Work
12-5-1. Louver Motor Defective
➀Set 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.
Normal
Color | Output Voltage |
WHT and each BLU wire | DC 1 – 12 V (pulse) |
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*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace indoor unit PCB.
No abnormalities, proceed to check ➁.
➁Disconnect FLAP of 5P connector for louver motor and measure resistance.
Normal
Color | Resistance |
WHT and each BLU wire | 300 – 450 Ω |
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* Use a circuit tester (set to Ω range).
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).
➀Disconnect Thermistor 1 connector (3P, BLK) from outdoor unit PCB, and measure resistance on Thermistor 1 side.
Normal
Temperature | Resistance |
68°F (20°C) | 6.0 – 7.1 kΩ |
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86°F (30°C) | 4.0 – 5.0 kΩ |
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140°F (60°C) | 1.5 – 1.7 kΩ |
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In case of abnormality ➞ Replace Thermistor 1.
12-6-2. Thermistor 2 Defective
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check Thermistor 2 (CN16).
➀Remove Thermistor 2 connector (3P, RED) from the outdoor unit PCB, and measure resistance on the Thermistor 2 side.
Normal
Temperature | Resistance |
68°F (20°C) | 6.0 – 7.1 kΩ |
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86°F (30°C) | 4.0 – 5.0 kΩ |
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140°F (60°C) | 1.5 – 1.7 kΩ |
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In case of abnormality ➞ Replace Thermistor 2.
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