C - A 1
(A/T)CONT900AC43UA Installer Guide
4 Heat/3 Cool/ Heat Pump
Communicating Programmable 3-Wire Hookup
Introduction........................................................................................................................................ 3
Product specifications ................................................................................................................... 3
Installation .......................................................................................................................................... 3
When installing this product .......................................................................................................... 3
Location ......................................................................................................................................... 4
Selecting Comfort Control location ............................................................................................... 4
Sub-base installation ..................................................................................................................... 4
Wiring ............................................................................................................................................ 5
Mounting Comfort Control on sub-base......................................................................................... 6
Initial power-up .................................................................................................................................. 6
Power-up sequence ....................................................................................................................... 6
Discovery mode ............................................................................................................................ 6
Communicating indoor unit - Communicating outdoor unit ........................................................... 7
Communicating indoor unit - Single stage cooling unit ................................................................. 7
Adjusting real time clock .................................................................................................................. 7
Setting calendar and time ............................................................................................................. 7
Installer setup (ISU) ........................................................................................................................... 8
Entering installer setup .................................................................................................................. 8
Operation: Using the Comfort Control .......................................................................................... 18
System and fan settings .............................................................................................................. 18
Fan settings ................................................................................................................................. 18
LED indication ............................................................................................................................. 18
Filter indication ............................................................................................................................ 18
Pre-programmed ......................................................................................................................... 18
Alert code numbers ..................................................................................................................... 18
Equipment damage hazard. Minimum compressor off-time is bypassed during installer
System test ..................................................................................................................................19
System checkout ............................................................................................................................. 19
Installer system test..................................................................................................................... 19
Advanced features ........................................................................................................................... 19
Adjustable continuous air flow ..................................................................................................... 19
Control response rate .................................................................................................................. 20
Cycle rate .................................................................................................................................... 20
Auto changeover ......................................................................................................................... 20
Communicating Controller
Section A