S9240F2051 MODULATING INTEGRATED FURNACE CONTROL
29 69-2807—01
Valve relay contact shorted 205 Soft Lockout after fault recovers and flame is gone.
Soft
Lockout
HSI sensed open 207 Soft Lockout. Error counter cleared when exiting lockout.
Inducer/pressure switch calibration failure 228 Retry after 5 minutes. If failed allowed times, go to Soft
Lockout. Error counter cleared when exiting lockout.
Retry > maximum – last one due to no flame 270 Retry. If failed allowed times, go to Soft Lockout. Error
counter cleared when exiting lockout.
Retry > maximum – last one due to low
pressure switch open
271 Retry. If failed allowed times, go to Soft Lockout. Error
counter cleared when exiting lockout.
Recycle > maximum – last one due to low
pressure switch open
272 Retry. If failed allowed times, go to Soft Lockout. Error
counter cleared when exiting lockout.
Recycle > maximum – last one due to flame
lost in run mode
273 Retry. If failed allowed times, go to Soft Lockout. Error
counter cleared when exiting lockout.
Limit switch open > 3 minutes 274 Soft Lockout. Error counter cleared when exiting lockout.
Flame out of sequence and flame is gone 275 Soft Lockout. Error counter cleared when exiting lockout.
Retry > maximum; Failed to calibrate 276 Soft Lockout. Error counter cleared when exiting lockout.
Failed ignitor or trigger circuit 290 Soft Lockout. Error counter cleared when exiting lockout.
Available CFM below minimum firing rate 291 Soft Lockout. Error counter cleared when exiting lockout.
Circulator unable to start 292 Soft Lockout. Error counter cleared when exiting lockout.
Inducer over current 294 Soft Lockout. Send command to reset-motor. Error counter
cleared when exiting lockout.
Rollout open or previously opened 200 Wait for rollout switch to close, then enter Hard Lockout. All
error counters cleared after reset.
Hard
Lockout
Furnace size select missing or mis-match with
installed circulator motor (BTU reading
mismatch)
202 Hard Lockout. All error counters cleared after reset.
Invalid Unit Code (Appliance Capacity/Size) 203 Unit defaults to 90 (90kBTU) if 1/2HP motor detected or 135
(135kBTU) if 1HP motor detected.
a
In non-communicating mode an open or no temperature sensor is not considered as an error. In communicating mode, temper-
ature sensor errors (open, short, or out of range) are reported only if the temperature sensor is sensed as installed during the
configuration (device commissioning).
b
Recycle furnace power and perform operational check. If error repeats, there may be a permanent failure on the control board.
Table 12. LED Error Codes Displayed By The S9240F2051 IFC. (Continued)
Error/Fault Condition Code
IFC Error Handling
(in addition to displaying error code) Result
Table 13. LSOM
a
LED Error Codes Displayed By The S9240F2051 IFC.
Error/Fault Condition Code
IFC Error Handling
(in addition to displaying error code) Result
LSOM: Compressor long run times:
A/C only – over 18 hours
401
None
Warning
Only
LSOM: Compressor short-cycling:
running less than 4 minutes
403
LSOM: System pressure trip 402
None
Wait For
Recovery
LSOM: Compressor rotor locked 404
LSOM: Compressor open circuit 405
LSOM: Compressor open start circuit 406
LSOM: Compressor open run circuit 407
LSOM: Compressor contactor is welded 408
LSOM: Compressor low voltage 409
a
LSOM = Lennox System Operating Monitor
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