1+2 Blower running after power-up (normal)

What the control is telling you

One short and two long flashes. Normal: the blower runs for 90 seconds when power comes back during a heat call, or when the heat call ends during the blower-on delay.

Applies to: KeepRite (F/G)9MXE single-stage and (F/G)9MXT two-stage 95% furnaces

Likely causes

• Power was restored while W was calling
• Heat call dropped during the blower-on delay

Test and repair steps

1. No repair needed - wait out the 90 s blower run.
2. After the 90 s the light should go back to the heartbeat and the furnace answers the thermostat normally.
3. If it shows up often, look for loose power connections or a thermostat that drops W.

Settings for these units

• Filter size by casing width · KeepRite (F/G)96VTN Two-Stage Variable-Speed Furnace

Models that show this code

16 models in KeepRite (F/G)9MXE Single-Stage Furnace, KeepRite (F/G)9MXT Two-Stage Furnace

Other codes on the same units

• 2 Pressure switch stuck closed (did not open)
• 3 Pressure switch did not close or reopened
• 4 Limit or rollout circuit open
• 5 Flame sensed with gas valve off
• 6 Flame not proved during ignition trial
• 6+1 Ignition lockout after 4 failed tries
• 7 Limit circuit lockout
• 8 Gas heating lockout - manual reset needed