Daikin EBLA04E V Series Service Manual page 231

EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
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.
6 Check that the measured resistance value matches the resistance determined
through the measured temperature (earlier step in the procedure). E.g. R6T
thermistor:
▪ Measured temperature with contact thermometer: 23.1°C,
▪ Resistance value determined through temperature (using the thermistor
table A):
Resistance at 23°C: 21.85 kΩ,
Resistance at 24°C: 20.90 kΩ,
▪ Disconnect connector and measure resistance between X22A pin 1‑2:
Measured resistance: 21.86 kΩ,
▪ Measured resistance value is inside the range. R6T 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
draft – 31/05/2022 15:53
4 | Components
T °C kΩ
Service manual
231