Heater shows ROL or AGS after running for a short time; strong smell of exhaust near unit.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Severely blocked heat exchanger, Incorrect gas pressure causing overfiring, Blocked vent, Sooted burners

Safety First: Immediately shut off power and gas. Do not attempt to operate the heater until inspected. Risk of fire or carbon monoxide exposure.

Visual inspection: After cooling, remove the front panel and look for soot, melted wiring, or discoloration around the burner and flue.
Do not reset repeatedly: Repeatedly resetting rollout or AGS devices without correcting the cause is dangerous.
Professional cleaning: Contact a qualified gas technician to clean the burners, inspect and possibly replace the heat exchanger, and verify gas input and combustion.

Professional Required 5/5

Burner Assembly

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