3 | Components
Service manual
263
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
▪ Measured temperature with contact thermometer: 23.1°C,
▪ Resistance value determined through temperature (using the thermistor
table A):
Resistance at 23°C: 21.85kΩ,
Resistance at 24°C: 20.90kΩ,
▪ Disconnect connector and measure resistance between X22A pin 1‑2:
Measured resistance: 21.86kΩ,
▪ 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.
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Action
Yes Thermistor is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
No Continue with the next step.
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
"6.2Wiring diagram"[4314].
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?
Action
Yes Correct the wiring between the wiring
terminal on the unit and the thermistor
connector on the PCB, see "6.2Wiring
diagram"[4314].
No Replace the specific thermistor, see
"Repair procedures"[4266].
To perform a mechanical check of the fin thermistor
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see "3.17Plate work"[4230].
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