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18-CE18D1-1A-EN
Integrated Furnace Control Display Codes
2 Stage Inducer with ECM Blower Motor Status Codes
IdL Idle
XtI
First Stage Heating
Xt2
Second Stage Heating
aRF
Calculated airflow times 10 (080=800 CFM)
C0F Continuous Fan
CLI
First Stage Cooling
CL2
Second Stage Cooling
Xp!
First Stage Heat Pump
Xp2
Second Stage Heat Pump
dFt Defrost Mode
Menu Options
err Active Alarm Menu
L6F
Last 6 Faults (To clear — Hold Option button down for 5 seconds)
Cr Code Release Number
C0d
Cooling Off Delay (Seconds)
0dt
Outdoor Tonnage
0du Outdoor Unit
COF
Blower Constant Fan Airflow Multiplier (Percentage)
CpC
Cooling (CFM/Ton)
CpH
Heat Pump Heating (CFM/Ton)
Xod
Heat Off Delay (Seconds)
!sd
Inter-Stage Delay (Seconds)
gXC
Gas Heating CFM 2nd Stage (1st Stage is not adjustable)
run Run Test Mode
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 3 times)
e2.2
Recycles Exceeded (Flame sensed then lost, one hour lockout after 10 times)
e2.3
1st Stage Gas Valve Not Energized When It Should Be exceeded after 10 times
e3.!
Shorted Pressure Switch, 1st Stage
e3.2
Open Pressure Switch, 1st Stage
e3.3
Shorted Pressure Switch, 2nd Stage
e3.4
Open Pressure Switch, 2nd Stage
e04
Open Limit (Main Thermal, Rollout Switch, or Reverse Airflow Switch)
e0s
Flame detected, should not be present
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