How to Reset Your Gas Ducted Heater Safely?
Gas ducted heating systems are one of the most common in Australia. Like any other appliance, they can occasionally malfunction or shut down unexpectedly.
One of the most common fixes for a misbehaving heater is performing a system reset. It must be done correctly to avoid damaging your unit or risking safety.
In this guide, we'll walk you through how to reset your gas ducted heater safely, when it’s appropriate to do so, if you need professional help, call Unitests. 1300 84 66 88
Why you need to reset your gas ducted heater?
A gas ducted heater may require a reset for several reasons:
Power interruption or outage
Blocked or dirty filters
Overheating due to restricted airflow
Flame failure or ignition issues
Sensor or thermostat errors
Lack of recent servicing
Sometimes, the unit may go into a lockout mode to protect itself and your home. A reset clears this mode and allows the heater to attempt a fresh start.
Step-by-Step Guide to Resetting Your Gas Ducted Heater
IMPORTANT: Always refer to the user manual of your specific heater model before attempting a reset. If in doubt, contact a licensed professional - we at Unitestes can help you.
Turn Off the System
Start by switching off the heater at the wall control panel.
Then locate the main power switch — typically located in the ceiling, roof space, or a service panel — and turn it off.
Wait at least 5 minutes to allow the internal components to fully power down.
Check for Obvious Issues
Look for dirty filters, blockages in vents or ducts, or any signs of damage.
If the unit has a reset button on the controller or the heater itself, make sure it's not stuck or damaged.
Power On the Unit
Switch the main power back on first.
Then turn the wall controller back on.
Some systems require you to press a reset button on the wall controller or hold down a specific button combination.
Observe the Startup Process
The heater will typically go through a self-check cycle.
Listen for the fan starting, ignition spark, and burner firing up.
If the system powers on and begins to heat as expected, great! You’ve successfully reset it.
When NOT to reset the heater yourself
If your heater continues to:
Shut off shortly after starting
Display an error code
Produce unusual smells or sounds
Fail to ignite after multiple reset attempts
then it’s time to seek professional help.
Attempting repeated resets without resolving the underlying issue can damage the unit and potentially create safety hazards, especially when dealing with gas and flame ignition components.
Regular maintenance prevents problems
Most gas ducted heaters only require annual servicing to remain efficient and safe. However, neglecting service increases the risk of:
Dirty filters and burners
Sensor failures
Ignition problems
Carbon monoxide leaks
Routine maintenance by a licensed professional ensures your system runs smoothly all season long.
Need Help? Call Unitests
If your gas ducted heater is not working properly or you’re unsure how to reset it safely, don’t take chances. The expert team at Unitests is here to help.
With over 30 years of experience in gas heating services and repairs across Melbourne, we can inspect, diagnose, and get your heater back in top shape, fast and safely.