Wifi Control Pcb; Checking Procedures - Daikin Split Sensira R32 Service Manual

3.14 Wifi control PCB

3.14.1 Checking procedures

To perform a power check of the wifi control PCB
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 2023.01
▪ Measured temperature with contact thermometer: 23.1°C,
▪ Resistance value determined through temperature (using the thermistor
table A):
Resistance at 20°C: 24.3 kΩ,
Resistance at 25°C: 19.4 kΩ,
▪ Measure resistance between pin 1‑2:
Measured resistance: 21.86 kΩ,
▪ Measured resistance value is inside the range. Thermistor passes the check.
INFORMATION
All thermistors have a resistance tolerance of 3%.
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Yes
No
ONECTA App adapter BRP069C47 Wifi Control PCB is an optional accessory. The
unit does NOT have this PCB by default.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
2 Turn ON the power of the unit.
3 Measure the power supply voltage between the pins 4‑5 on the wifi control
PCB connector.
Result: The measured voltage MUST be 10~16 V DC.
3 |
Action
Thermistor is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
Replace the specific PCB, see
4
"3 Components" [ 47].
4
"3.10 Plate work" [ 124].
Components
Service manual
149