Can I fix Proflame (SIT) code 3 blinks myself?

Start with these safe checks: Make sure the gas supply to the fireplace is on and, for propane, the tank isn't empty. Reset once: turn the fireplace off with the remote (or receiver switch), wait at least 2 seconds, and turn it back on. If it locks out again, stop resetting. SIT says the cause of a lockout should be investigated before normal use. If you smell gas, leave and call your gas supplier from outside.

When should I call a technician for code 3 blinks?

If it locks out again, stop resetting. SIT says the cause of a lockout should be investigated before normal use. If you smell gas, leave and call your gas supplier from outside. Smell gas? Leave right away, don't touch light switches or phones inside, and call your gas utility or 911 from outside. Never open a gas valve, burner, gas line, vent or flue connection, or bypass a safety switch. Repeated lockouts, scorching, soot, or a CO alarm mean shut it off and call a licensed gas technician.

Proflame (SIT) Gas Fireplace Error Code 3 blinks / 3 red blinks:…

What 3 blinks means

Three repeating red blinks mean lockout: the system shut down after too many failed ignition tries or an abnormal flame reading. Both gas valves are closed and it ignores on commands until reset.

Also shown as: 3 red blinks, depending on the model.

Likely causes

Gas supply off or low
Empty propane tank
Cold vent on startup
Pilot or flame sensing problem

Safe first checks

Make sure the gas supply to the fireplace is on and, for propane, the tank isn't empty.
Reset once: turn the fireplace off with the remote (or receiver switch), wait at least 2 seconds, and turn it back on.

When to stop

If it locks out again, stop resetting. SIT says the cause of a lockout should be investigated before normal use. If you smell gas, leave and call your gas supplier from outside.

Checked against: SIT Group, Proflame 2 IFC control board use and installation instructions (9.957.103): lockout and red LED codes. Codes can differ by model and year, so confirm with your owner's manual.