– 4 –
Thermistors ...................................................................................................................................26
Thermistors ........................................................................................................................... 26
Thermistors Indoor................................................................................................................26
Thermistors Outdoor .............................................................................................................26
Controls ........................................................................................................................................27
Main Board: Front Cover ......................................................................................................27
Power Cords .........................................................................................................................28
Main Board - Front ................................................................................................................ 29
RJ-45 ....................................................................................................................................29
Main Board ...........................................................................................................................30
Component Checks at Main Board ....................................................................................... 31
Fault Codes ..................................................................................................................................32
Service Mode ...............................................................................................................................34
Accessing Controls ...............................................................................................................35
Low Voltage Transformer ...................................................................................................... 36
Service Main Board ......................................................................................................................37
User Interface ...............................................................................................................................39
Air System ....................................................................................................................................40
Fan Motors ...........................................................................................................................40
Indoor Fan Motor ..................................................................................................................40
Indoor Blower Wheel ............................................................................................................40
Indoor Fan Bearing ...............................................................................................................41
Outdoor Fan Motor Shroud ................................................................................................... 42
Outdoor Fan Motor ...............................................................................................................43
Electric Heat .................................................................................................................................44
Heater ...................................................................................................................................44
Condensate Removal ...................................................................................................................46
ICR System ..........................................................................................................................46
ICR Pump .............................................................................................................................46
Slinger on Outdoor Fan Blade ..............................................................................................46
Damper Door ........................................................................................................................47
Make-Up Air Module (MUAM) ............................................................................................... 47
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