A951X-SVX001-1D-EN
89
Troubleshooting
The following pages include troubleshooting
flowcharts in reference to the A951X single stage
furnaces only
The information contained is for reference only and
does not cover all scenarios or problems that may be
encountered.
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.
Error Codes
Alarm Error Code
Alarm Explanation
e0!
Loss of the IRQ or other internal failures (Internal IFC error)
e2.!
Retry Exceeded (Flame never sensed, one hour lockout after 6 times)
e2.2
Recycles Exceeded (Flame sensed then lost, one hour lockout after 10 times)
e2.3
gas Valve Not Energized When It Should Be exceeded after 10 times
e3.! Shorted Pressure Switch
e3.2
Open Pressure Switch
e04
Open Limit (Main Thermal, Rollout Switch, or Reverse Airflow Switch)
e0s
Flame detected, should not be present
e6.!
Voltage reversed polarity
e6.2
Bad grounding
e6.3
(1) Igniter relay fails
(2) Igniter open
e7.!
Gas valve (MVL) is energized when it should be off
e08
Flame current is low, but still strong enough to allow operation
e09
Open Inducer Limit Switch or Condensate Pressure Switch
e11
See Troubleshooting Instructions
e12
Open fuse
e14 / e18
Refer troubleshooting flow chart
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