Furnace lockout results when a furnace is unable to achieve ignition after three attempts during a single call for heat. It is
characterized by a non-functioning furnace and a fault code displayed. If the furnace is in "lockout", it will (or can be) reset in any
of the following ways.
1. Automatic reset. The integrated control module will automatically reset itself and attempt to resume normal operations
following a one hour lockout period.
2. Manual power interruption. Interrupt 115 volt power to the furnace.
3. Manual thermostat cycle. Lower the thermostat so that there is no longer a call for heat for 1 -20 seconds then reset to
NOTE: If the condition which originally caused the lockout still exists, the control will return to lockout. Refer to the Troubleshooting
Chart for aid in determining the cause.
The furnace should be inspected by a qualified installer, or service agency at least once per year. This check should be performed at
the beginning of the heating season. This will ensure that all furnace components are in proper working order and that the heating
system functions appropriately. Pay particular attention to the fol-
lowing items. Repair or service as necessary.
Flue pipe system. Check for blockage and/or leakage. Check
the outside termination and the connections at and internal
to the furnace.
Heat exchanger. Check for corrosion and/or buildup within
the heat exchanger passageways.
Burners. Check for proper ignition, burner flame, and flame
Drainage system. Check for blockage and/or leakage. Check hose connections at and internal to furnace.
Wiring. Check electrical connections for tightness and/or corrosion. Check wires for damage.
Improper filter maintenance is the most common cause of inadequate heating or cooling performance. Filters should be cleaned
(permanent) or replaced (disposable) every two months or as required. When replacing a filter, it must be replaced with a filter of the
same type and size.
1 flash, then pause
2 flashes, then pause
3 flashes, then pause
4 flashes, then pause
5 flashes, then pause
6 flashes, then pause
7 flashes, then pause
8 flashes, then pause
The LED will also flash once at power-up.
HIGH VOLTAGE !
O AVOID PERSONAL INJURY OR DEATH DUE TO
PERFORMING ANY SERVICE OR MAINTENANCE
Pressure switch stuck closed
Pressure switch stuck open
Open limit switch
Flame has been sensed when no flame
should be present (no call for heat)
Open rollout switch / open control board fuse
Low flame sense signal
Igniter relay fault
115 Volt AC power reversed
DISCONNECT ELECTRICAL POWER