An ignition module controls the timing and operation of ignition in gas furnaces and boilers. It sends the electrical signal that sparks or heats the igniter, verifies flame, and shuts the system down if ignition fails. Modern modules often include diagnostics for safer, more reliable heating.
/ɪɡˈnɪʃən ˈmɒdjuːl/
An ignition module controls the timing and operation of ignition in gas furnaces and boilers. It sends the electrical signal that sparks or heats the igniter, verifies flame, and shuts the system down if ignition fails. Modern modules often include diagnostics for safer, more reliable heating.
What does an ignition module do?
It controls ignition timing, verifies flame, and shuts the system down if ignition fails.
Source: The Cooling Company
Ignition modules manage safe start-up and flame verification.
When the thermostat calls for heat, the ignition module energizes the igniter, opens the gas valve, and confirms flame before allowing the burner to run.
If ignition is inconsistent or the system locks out, have a technician test the module and ignition circuit.
“If ignition is inconsistent or the system locks out, have a technician test the module and ignition circuit.”
Solid-state ignition modules replaced older mechanical controls for improved safety.
Can an ignition module be repaired?
Typically no. If it fails, replacement is the standard fix.
What are signs of a bad ignition module?
Repeated ignition failures, lockouts, or intermittent heat.
Is an ignition module the same as an igniter?
No. The module controls ignition; the igniter is the component that sparks or heats.
Fill out the form and we'll get back to you within 24 hours.
