Pitco 2 Flashes

What does Pitco 2 Flashes mean?

Two orange flashes on the Pitco ignition module indicate a Flame Sense Circuit Error: the module senses a problem in the flame sensing circuit itself. A dirty or misaligned flame sensor, a loose or broken sensor wire, or a poor ground stops the module from reading a reliable flame-rectification current, so it flags the sense circuit. Flame current should measure greater than 0.15 microamps when the circuit is healthy.

Symptoms

• Orange LED flashes twice, pauses, and repeats after lockout.
• Module behaves as if it cannot confirm flame even when the pilot is lit.
• Measured flame current is below the 0.15 microamp threshold.
• Fault correlates with a dirty sensor rod or a poor ground connection.

Common causes

• Flame sensor rod is dirty or coated.
• Flame sensor is misaligned out of the flame path.
• Sensor wire is loose or broken.
• Poor ground connection on the burner or module.

Diagnostic steps

1. 01

   Clean the flame sensor rod

   Clean the flame sensor rod of oxidation and carbon so it can conduct a clean rectification current to the module.

2. 02

   Inspect the sensor wiring

   Check the flame sensor wire end to end for loose terminals or breaks, and reseat any loose connections.

3. 03

   Verify the ground connection

   Confirm the burner and module grounds are clean and tight. Flame rectification depends on a solid ground to read correctly.

4. 04

   Measure flame current

   Measure the flame current — it should read greater than 0.15 microamps. A lower reading confirms a weak or compromised flame-sense circuit.

When to call a professional

Call a Pitco-authorized technician if 2 Flashes persists after cleaning the sensor, securing the wiring and ground, and the flame current still reads below 0.15 microamps. Flame-rectification diagnosis with a microamp meter and verification of the sensing circuit are best performed by a technician trained on the Matchless ignition system to confirm the module reads flame safely.