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3
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Components
Service manual
82
(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
VDC
Comm
Voltage
2
3
1.433 V DC
3
1
OL
3
2
OL
DC fan motor measurements are
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Replace the DC fan motor, see
(A)(F)TXF-E units
Prerequisite:
First perform a mechanical check of the DC fan motor assembly, see
1
Remove the cover from the switch box; see
124].
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 70.9~78.3 Ω.
DC fan motor measurements are
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Replace the DC fan motor, see
3.6.2 Repair procedures
To remove the DC fan motor assembly
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
124].
1
Remove the switch box, see
2
Click the indoor unit fan motor cover out of the indoor unit. If needed, remove
the screw (if installed) on the right hand side of the fan motor cover for easier
removal.