29
Service Facts
X343070P08
Troubleshooting Flowchart Index
30) IFC Component Layout
31) LED Flash Codes
32) Getting started
33) 2 Flash Troubleshooting Retry and Recycle Lockout
35) 3 Flash Troubleshooting Pressure Switch Fault
36) 4 Flash Troubleshooting High Limit and Auxiliary Limit
37) 4 Flash Troubleshooting Roll Out Switch
38) 5 Flash Troubleshooting Flame Sensed Fault
39) 6 Flash Troubleshooting Polarity Revered
40) 7 Flash Troubleshooting External Gas Valve Circuit Fault
41) 8 Flash Troubleshooting Low Flame Sense Fault
42) 9 Flash Troubleshooting Open Inducer Limit
43) VS No Air Flow / Incorrect Air Flow
The following pages include troubleshooting flowcharts in
reference to the 95% Two Stage (*UH2) furnaces ONLY; using
the FAULT LED as starting points.
The information contained is for reference only and does not
cover all scenarios or problems that may be encountered by a
qualified field technician.
Only qualified technicians should attempt to install, troubleshoot,
or repair this appliance. Failure to follow all cautions and/or
warnings could result in personal or property damage; including
death.
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