Components ......................................................................................................................................................................... D-2

Component Overview .........................................................................................................................................................D-2

Cassette Unit Indoor Circuit Board .....................................................................................................................................D-4

Testing .................................................................................................................................................................................. D-5

Accessing the Blower Motor and Condensate Pump ........................................................................................................D-5

Removing Fan Motor ...........................................................................................................................................................D-5

Removing Condensate Pump .............................................................................................................................................D-5

Indoor Fan Motor Test Procedure .......................................................................................................................................D-6

Testing Temperature Sensors .............................................................................................................................................D-6

Testing Louver Motors ........................................................................................................................................................D-7

Testing Communication Circuit ..........................................................................................................................................D-7

Test Condensate Pump and Associated Float Switch .......................................................................................................D-8

Wiring Diagram & DIP Switch Settings .................................................................................................................................. D-9

Error Codes ......................................................................................................................................................................... D-10

COMPACT CASSETTE TECHNICAL OVERVIEW

Table of Contents

COMPACT CASSETTE TECHNICAL OVERVIEW

AB09SC2VHA

AB12SC2VHA

AB18SC2VHA

D-1

Table of Contents