Daikin 10 - Check

116
7
Troubleshooting
Check
４
Check 1 Check the thermistor resistance value
Remove each thermistor and connector, and measure the resistance value of each thermistor with a tester.
The relationship between temperature and resistance during normal operation is as shown in the graph and table below.
Characteristics of thermistor
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
Temperature (
℃
)
Resistance value (kΩ)
0 10
130
1201101009080706050403020
Temperature (℃) 0 10 15 20 25 30 35 40 45 50 55 60 65
Resistance value (kΩ) 67.33 40.38 31.69 25.08 20.00 16.07 13.01 10.60 8.69 7.17 5.95 4.97 4.17
Temperature (℃) 70 75 80 85 90 95 100 105 110 115 120 125 130
Resistance value (kΩ) 3.51 2.98 2.54 2.17 1.86 1.61 1.39 1.21 1.06 0.92 0.81 0.72 0.63
Check 2 Check the motor operated valve
Check the motor operated valve according to the following items.
① Check if the motor operated valve connector is properly inserted
on the control board, and check the harness of the motor operated
valve coil against the connector number.
② Check if there is any rattling latch noise when the power supply is
turned off and then turned on again.
③ If there is no noise in ② above, remove the connector and check the
resistance of the motor operated valve coil.
*Normal motor operated valve coil resistance
Electronic expansion valve for main circuit (Y1E): 46 ± 4Ω (20℃)
Motor operated valve for hot gas (Y2E): 46 ± 3Ω (20℃ )
Connector : 6P
Harness : 5
WT YE OR BL RD
1 2 3 4 5 6
Empty
6-1
6-2
6-3
6-4
Check
00_PB00540A_M10.indb 116 2023/08/09 12:59:08