Troubleshooting For Main Malfunction - Lennox LI012CO-230P432 Service Manual

Malfunction of Temperature Sensor F1, F2

9.3 Troubleshooting for Main Malfunction

●Indoor unit:
Is.the.wiring.terminal.between.the.temperature.sensor.and.the.controller.loosened.or.poorly.contacted?
Is.there.short.circuit.due.to.trip-over.of.the.parts?
Is.the.temperature.sensor.broken?
1. Malfunction of Temperature Sensor F1, F2
Is.mainboard..broken?
50
Troubleshooting for
F1,F2 malfunction
Is
the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
no
Is there short circuit due to trip - over of
the parts?
no
no
Is the
temperature sensor normal according
to the Resistance
Table?
yes
no
Replace the mainboard
with the same model.
End
yes
Insert the temperature
sensor tightly
Is malfunction
no
eliminated
yes
Make the parts upright
Is malfunction
eliminated
no
Replace it with a
temperature sensor
with the same model
Is malfunction
removed
yes
Service Manual
yes
yes
Installation and Maintenance