F19
Aquacomfort
Line Voltage Out of Range
Heater shows F19; may coincide with low line voltage or brownouts.
Advertisements
Safety Warning
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.
Advertisements
Possible Causes
Low or high supply voltage, Loose power connections, Undersized wiring, Failing contactor or disconnect
How to Fix / Troubleshooting
Safety first: Turn off power at the main breaker before tightening any electrical connections. High voltage is present.
- Measure supply voltage (advanced): Using a multimeter and proper safety precautions, verify that the voltage at the heater’s input terminals is within Aquacomfort’s specified range.
- Inspect connections: Check that all lugs in the heater’s electrical compartment are tight and free of corrosion. Loose connections can cause voltage drop and heat.
- Check wire size: Confirm that the supply wiring gauge matches the heater’s current draw and distance per local code.
- Utility issues: If voltage from the utility is unstable, contact your power company or an electrician. Do not operate the heater with F19 present.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Power Input Wiring
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements