Daikin Split Comfora R32 Service Manual page 117

ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01C – 2020.07
T °C kΩ T °C
–9 106.03 21
–8 100.41 22
–7 95.14 23
–6 90.17 24
–5 85.49 25
–4 81.08 26
–3 76.93 27
–2 73.01 28
–1 69.32 29
0 65.84 30
1 62.54 31
2 59.43 32
3 56.49 33
4 53.71 34
5 51.09 35
6 48.61 36
7 46.26 37
8 44.05 38
9 41.95 39
4 Disconnect the thermistor connector from the appropriate PCB.
5 Measure the resistance between the appropriate pins of the thermistor
connector.
6 Check that the measured resistance value matches the resistance determined
through the measured temperature (earlier step in the procedure). E.g. R1T
thermistor:
▪ Measured temperature with contact thermometer: 23.1°C,
▪ Resistance value determined through temperature (using the table for type
1 thermistors):
Resistance at 23°C: 21.85 kΩ,
Resistance at 24°C: 20.90 kΩ,
▪ Disconnect connector and measure resistance between S26 pin 1‑2:
Measured resistance: 21.86 kΩ,
▪ Measured resistance value is inside the range. R1T thermistor passes the
check.
INFORMATION
All thermistors have a resistance tolerance of 3%.
INFORMATION
In most cases, the user interface allows to monitor the thermistors.
If the measured resistance value matches the resistance determined through the
measured temperature, but the temperature for the corresponding thermistor is
NOT correct on the user interface display, replace the applicable PCB.
kΩ T °C kΩ
23.91 51 6.91
22.85 52 6.65
21.85 53 6.41
20.90 54 6.65
20.00 55 6.41
19.14 56 6.18
18.32 57 5.95
17.54 58 5.74
16.80 59 5.14
16.10 60 4.87
15.43 61 4.70
14.79 62 4.54
14.18 63 4.38
13.59 64 4.23
13.04 65 4.08
12.51 66 3.94
12.01 67 3.81
11.52 68 3.68
11.06 69 3.56
2 Components
|
T °C kΩ
Service manual
117