230
TROUBLESHOOTING
54) Inspect Subcooling Valve
1. Check if the mechanical part of the subcooling valve is locked
When the valve is driven with the mechanical part locked, the motor idles, making a soft clicking sound.
1) Turn ON the electric leakage breaker.
2) Check if the valve makes the sound when it is fully closed (when the power is turned ON), and makes no sound
when it is opened.
If the valve makes the sound both when it is fully closed and opened, there is a fault in the valve.
Code No. Measure point (on main PCB)
Compressor intake temperature No. 44 CN4[23]-[24]
Accumulator outlet temperature No. 45 CN4[13]-[14]
Outdoor heat exchanger vapor pipe temperature No. 49 CN4[17]-[18]
Outdoor heat exchanger liquid temperature No. 4A CN4[19]-[20]
Outdoor liquid pipe temperature No. 4b CN4[29]-[30]
Sub heat exchanger liquid temperature No. 4c CN4[15]-[16]
Engine compartment temperature No. 50 CN6[13]-[14]
Temperature Standard resistance value Temperature Standard resistance value
14 ℉ (-10 ℃ ) 24.0 kΩ 122 ℉ (50 ℃ ) 2.2 kΩ
32 ℉ (0 ℃ ) 15.0 kΩ 140 ℉ (60 ℃ ) 1.6 kΩ
50 ℉ (10 ℃ ) 9.7 kΩ 158 ℉ (70 ℃ ) 1.1 kΩ
68 ℉ (20 ℃ ) 6.4 kΩ 176 ℉ (80 ℃ ) 0.9 kΩ
86 ℉ (30 ℃ ) 4.4 kΩ 194 ℉ (90 ℃ ) 0.6 kΩ
104 ℉ (40 ℃ ) 3.0 kΩ 212 ℉ (100 ℃ ) 0.5 kΩ
[ 8 TON ] [ 15 TON ]
Coil
Mechanical
part
Coil
Mechanical
part
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