Components ..........................................................................................................................................................................E-2

Component Overview ..........................................................................................................................................................E-2

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

Testing ...................................................................................................................................................................................E-5

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

Removing Fan Motor ............................................................................................................................................................E-5

Removing Condensate Pump ..............................................................................................................................................E-5

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

Testing Temperature Sensors ..............................................................................................................................................E-6

Testing Louver Motors .........................................................................................................................................................E-7

Testing Communication Circuit ...........................................................................................................................................E-7

Test Condensate Pump and Float Switch ............................................................................................................................E-8

Wiring Diagram ......................................................................................................................................................................E-9

DIP Switch Settings .............................................................................................................................................................E-10

Error Codes ..........................................................................................................................................................................E-11

LARGE CASSETTE TECHNICAL OVERVIEW

Table of Contents

LARGE CASSETTE TECHNICAL OVERVIEW

AL24LP2VHA

E-1

Table of Contents