A.O. Smith cyclone BFC - 80 Installation And Service Manual page 72

Code + Description Cause
F02 (lock out error) Defective motor and/or
rotor.
Fan fails to run at
correct speed.
Damaged wiring
Dirty or blocked fan
Because of a drop in
the supply voltage, the
fan is not running at the
correct speed.
The F02 entries below are applicable solely to appliances that have a 3-phase fan with frequency controller.
Fun supplying The live (phase) wires,
insufficient pressure between freq. controller
and fan are connected
wrong way around
Fan speed too low
Instruction manual BFC
Solution
1. Check the motor and rotor
2. Replace the fan if the motor or rotor is defective.
3. Reset appliance controller
1. Check the wiring between the fan and the controller.
2. If any wires are damaged, the wiring harness must be replaced.
3. Reset appliance controller
1. Check if the fan is dirty
2. Check that the rotor can rotate freely
3. Reset appliance controller
1. Check the supply voltage, this must be 230 VAC (-15%, +10%).
2. Reset appliance controller
1. Check the wiring between the fan and the frequency controller
2. Rectify the assembly if it is incorrect
3. Reset appliance controller
1. Check the fan speed
2. If the fan speed is too low, check the settings
3. If the settings are correct, then replace the fan.
4. Modify the settings if incorrect
5. Reset appliance controller
Remark
See the BFC electrical diagram (17 "Appendices")
To have the wiring replaced and a new fan fitted, you must contact
your installation engineer
See the BFC electrical diagram (17 "Appendices")
To replace the necessary parts, you must contact your installation
engineer
is
72