Daikin Stylish Series - Wifi Control PCB; Checking Procedures; Repair Procedures

2 | Components
Service manual
129
(C)(F)TXA15~50A(W)(S)(T) + (C)(F)TXA15~50B(B)(S)(T) + RXA42+50A +
RXA20~35A + RXA42+50B
Split Stylish R32
ESIE18-03C – 2020.02
INFORMATION
All thermistors have a resistance tolerance of 3%.
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 Replace the specific PCB, see
"2Components"[439].
Repair procedures
As the room thermistor is located on the same PCB as the humidity sensor, see
"2.6Humidity sensor"[466] for the repair procedures.
2.19 Wifi control PCB
2.19.1 Checking procedures
1 As there is no specific check procedure for this component, first perform a
check of the indoor unit PCB to check if the wifi control PCB needs to be
replaced. See "2.8.1Checking procedures"[471].
After complete check of the indoor unit
PCB, is the problem solved?
Action
Yes No further actions required.
No Replace the wifi control PCB, see
"2.19.2Repair procedures"[4129].
2.19.2 Repair procedures
To remove the wifi control PCB
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.13Plate work"[499].
1 Disconnect the wifi control PCB connector from the indoor unit PCB.
2 Carefully click the complete wifi control PCB assembly out of the indoor unit.