Daikin EBLA04E V Series Service Manual page 232

4 | Components
To perform an electrical check of the fin thermistor
Service manual
232
draft – 31/05/2022 15:53
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Yes
No
INFORMATION
Make sure that the wiring between the wiring terminal on the unit and the
thermistor is properly connected and NOT damaged (check continuity), see
"7.2 Wiring diagram" [
7 Disconnect the thermistor wiring from the wiring terminal on the unit and
measure the resistance of the thermistor (between the thermistor wires).
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Locate the thermistor on the appropriate PCB.
2 Measure the temperature using a contact thermometer.
INFORMATION
The thermistors may vary according to the specific unit.
3 Determine the thermistor resistance that matches the measured
temperature.
Thermistor – Table A
T °C kΩ T °C
–20 197.81 10
Action
Thermistor is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
Continue with the next step.
4
281].
Action
Correct the wiring between the wiring
terminal on the unit and the thermistor
connector on the PCB, see
diagram" [ 4
Replace the specific thermistor, see
"Repair procedures" [
"4.16 Plate
kΩ T °C kΩ
39.96 40 10.63
"7.2 Wiring
281].
4 234].
4
work" [ 202].
T °C kΩ
70 3.44
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05