State Flame Sense Error (Power Vent Models)

State electronic gas tank-type water heater LED flashes E7; unit may not detect flame correctly.

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

Dirty flame sensor, Poor ground, Reversed polarity on power supply, Faulty gas control flame circuit

Safety: Turn gas control to OFF and disconnect power.

Clean flame sensor: Remove the burner assembly and gently clean the flame rod with fine abrasive pad.
Check ground and polarity: Verify the heater is properly grounded and that hot/neutral are not reversed at the receptacle (use a plug-in tester).
Reassemble and test: Reinstall burner and follow lighting instructions. If E7 persists, the gas control may need replacement.

Medium 3/5

Flame Sensor Rod

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