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Table Of Contents
Important Safety Information ........................................................................................................................................ 2-4
Introduction ...................................................................................................................................................................... 5
Unit Identication ............................................................................................................................................................. 6
Chassis Specications for 2009, 2008 Models ............................................................................................................... 7
Installation Information/Sleeve Dimensions .................................................................................................................... 8
Performance Data ........................................................................................................................................................... 9
Electrical Data ............................................................................................................................................................... 10
Before Operating the Unit .............................................................................................................................................. 11
How to Operate the QM Programmable ........................................................................................................................ 12
How to Use the QM Programmable Remote Control ..................................................................................................... 13
How to Operate the XQ .................................................................................................................................................. 14
How to Use the XQ Remote Control .............................................................................................................................. 15
How to Operate the QM and Twintemp .................................................................................................................... 16-17
Testing the Electronic Control and Error Code Listings .............................................................................................17-18
Testing the Rotary Control Switches ..........................................................................................................................19-20
Functional Component Denition ................................................................................................................................... 20
Components Testing ...................................................................................................................................................21-24
Defrost Thermostat Operation ........................................................................................................................................ 24
Electronic Control Sequence of Operation ..................................................................................................................... 25
Refrigeration Sequence of Operation ............................................................................................................................. 26
Sealed Refrigeration System Repairs ....................................................................................................................... 27-30
Hermetics Components Check ...................................................................................................................................... 31
Reversing Valve Description/Operation ......................................................................................................................... 32
Testing the Coil .............................................................................................................................................................. 33
Checking the Reversing Valve .................................................................................................................................. 33-34
Compressor Checks .................................................................................................................................................. 35-36
Compressor Replacement ......................................................................................................................................... 37-38
Routine Maintenance ................................................................................................................................................. 39-40
Troubleshooting ......................................................................................................................................................... 41-48
Wiring Diagrams ........................................................................................................................................................ 49-58
Instructions for using Cooling Load Estimate Form ........................................................................................................ 58
Cooling Load Estimate Form .......................................................................................................................................... 60
Heat Load Form ......................................................................................................................................................... 61-62
Warranty .......................................................................................................................................................................... 63