Repair Procedures - Daikin RXTA30B2V1B Service Manual

4 | Components
To perform an electrical check of the DC fan motor assembly

4.8.2 Repair procedures

To remove the DC fan motor assembly
Service manual
90
FTXTA-B and FTXTM-R units
Prerequisite: First perform a mechanical check of the DC fan motor assembly, see
"4.8.1 Checking procedures" [
1 Remove the cover from the switch box; see
2 Disconnect the DC fan motor connector from the appropriate PCB.
3 Measure the resistance between the pins 1-2, 1-3, and 2-3 of the DC fan
motor connector.
Result: All measurements MUST be approximately the same.
DC fan motor measurements are
correct?
Yes
No
FTXTP-M and ATXTP-M units
Prerequisite: First perform a mechanical check of the DC fan motor assembly, see
"4.8.1 Checking procedures" [
1 Remove the cover from the switch box; see
2 Disconnect the DC fan motor connector from the appropriate PCB.
3 Measure the resistance between the pins 6-9, 6-12, and 9-12 of the DC fan
motor connector.
Result: All measurements MUST be 71.6~82.4 Ω.
4 Check the diode module by measuring the voltage between the following pins
of the DC fan motor connector.
VDC
1
2
3
3
DC fan motor measurements are
correct?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
4
89].
"4.17 Plate
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Replace the DC fan motor, see
"4.8.2 Repair
4 89].
"4.17 Plate
Comm
3
3
1
2
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Replace the DC fan motor, see
"4.8.2 Repair
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
work" [ 4 144].
4
procedures" [ 90].
4
work" [ 144].
Voltage
0.992 V DC
1.433 V DC
OL
OL
4
procedures" [ 90].
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02