Multi-Zone Technical Overview

TESTING
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ENGLISH
CASSETTE UNIT TECHNICAL OVERVIEW
Cassette Unit Testing Procedures: Louver Motor
Testing Louver Motors
If the louver does not operate with command from the remote
control, either the indoor board is bad, or the louver motor
is defective. It is more likely the motor is defective than the
board. (Make sure the louver assembly is not binding and
keeping the vanes from moving.)
1. Remove power from the unit and remove the indoor
unit cover.
2. Access the circuit board.
3. Identify the inoperable louver motor on the
schematic drawing below and disconnect the plug
from the circuit board.
4. Use an Ohmmeter to test the electrical continuity
of the louver motor windings. The proper
resistance for each winding can be found in this table.
If the motor winding resistance is erratic or shows
open, the motor is defective. Replace the motor.
5. If the motor checks out good, replace the indoor
control board.
Take electric box cover o󰀨
Front Panel Connector
Check Louver motor connector