One-hour soft lockout
One-hour soft lockout.
Failed ignition; burners failed to ignite
Failed ignition; burners failed to ignite.
Low flame sense; weak flame current detected
Low flame sense; weak flame current detected.
Flame lost after flame was established
Flame lost after flame was established.
Unexpected flame detected; flame sensed when gas valve should be closed
Unexpected flame detected; flame sensed when gas valve should be closed.
Main limit switch open; furnace overheating/high-limit condition
Main limit switch open; furnace overheating/high-limit condition.
Fuse open on the furnace control/low-voltage circuit
Fuse open on the furnace control/low-voltage circuit.
Rollout limit / manually reset limit control open
Rollout limit / manually reset limit control open.
Low pressure switch closed while inducer is off
Low pressure switch closed while inducer is off.
Low pressure switch open while inducer is running at high speed
Low pressure switch open while inducer is running at high speed.
Low pressure switch open while inducer is running at low speed
Low pressure switch open while inducer is running at low speed.
High pressure switch closed while inducer is off
High pressure switch closed while inducer is off.
High pressure switch open while inducer is running at high speed
High pressure switch open while inducer is running at high speed.
Water circuit open / P4 jumper continuity open
Water circuit open / P4 jumper continuity open.
High secondary voltage above normal range
High secondary voltage above normal range.
Non-critical blower fault; blower can still run but airflow may be compromised
Non-critical blower fault; blower can still run but airflow may be compromised.
Critical blower fault; blower motor cannot run
Critical blower fault; blower motor cannot run.
Blower cutback / inadequate airflow indicator
Blower cutback / inadequate airflow indicator.
No blower communication
No blower communication.
Internal control fault detected
Internal control fault detected.
No model data / no shared data available
No model data / no shared data available.
Airflow CFM mismatch
Airflow CFM mismatch.
No valid model data on memory card / invalid memory card data
No valid model data on memory card / invalid memory card data.
Horsepower conflict on memory card
Horsepower conflict on memory card.
Old shared data
Old shared data.