Daikin FTXTA30AW, Service Manual

Page: 55 / 120

ESIE17-19C | Part 2. Troubleshooting 2.4. Component checklist
19/08/19 | Version 1.1 Page 55
Optimized Heating 4
2.4.2.4. Fan motor
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to "Basic removal" on page 76 ).
PROCEDURE
1. Check the state of the propeller, replace the propeller if damaged, deformed, cracked or broken (refer to "Replacing propeller
fan blade assembly single fan outdoor unit" on page 97 ).
2. Check the motor shaft bearing friction, only perform electrical check if motor runs with low shaft bearing friction. Replace fan
motor if friction is abnormal (refer to "Replacing DC fan motor assembly" on page 87 ).
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to "Basic removal" on page 76 ).
PROCEDURE
1. Check fuse on PCB, replace if blown, see table "Component checklist" on page 118 .
2. Check if fan motor connector is plugged into PCB.
3. Power the Daikin unit.
4. Check power supply, the measured voltage must be 198 - 240 VAC, if not replace main PCB (refer to "Replacing main PCB"
on page 95 ).
Technical specification Description
The motor has a single connector for DC power and the rotation
counter feed back from the integrated pulse generator
(4 pulses/revolution). The fan motor runs on a fixed speed to supply the required air flow
rate.
Location
Piping diagram Wiring diagram Switch box Component overview of unit
See "Outdoor unit" on
page 117 .
See "Outdoor unit" on
page 114 .
See "Outdoor unit" on
page 118 .
See "Outdoor unit" on page 118 .
Check procedure
Mechanical check
Electrical check
W
ARNING
: R
ISK OF
F
IRE
When reconnecting a connector to the PCB, do not apply force, as this may damage the connector or connector pins of
the PCB.