Ignition Module
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.
💡 Key Takeaways
- ✓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.
- ✓Faulty modules can cause no-heat calls or unsafe operation.
- ✓Replacement must match the system’s specifications.
- ✓Regular maintenance helps detect early ignition issues.
Ignition Module
/ɪɡˈnɪʃən ˈmɒdjuːl/
Definition
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
Quick Facts
How Ignition Module Works
Ignition modules manage safe start-up and flame verification.
Real-World Application
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.
Pro Tip
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.”
Important Things to Keep in Mind
- Faulty modules can cause no-heat calls or unsafe operation.
- Replacement must match the system’s specifications.
- Regular maintenance helps detect early ignition issues.
Did You Know?
Solid-state ignition modules replaced older mechanical controls for improved safety.
FAQ
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.
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