E20
Poolworld
Lockout Due to Repeated Ignition Failures
Heater shows E20; unit may lock out after several failed starts
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
Persistent ignition or flame sense issues, Gas supply interruptions, Control board safety lockout, Unresolved prior error conditions
How to Fix / Troubleshooting
Safety first: Turn OFF power and gas if you suspect a gas leak or smell gas.
- Review prior errors: Note any error codes that appeared before E20. Address those root causes first (e.g., E01, E02, E14).
- Power cycle: Turn OFF power for 5 minutes to clear the lockout, then restore power and attempt to start the heater.
- Check gas supply stability: Ensure gas valves are fully open and that other gas appliances are not causing pressure drops when they start.
- Observe ignition sequence: Watch the heater through the sight glass during startup to see if ignition occurs and if the flame is stable.
Warning: If the heater repeatedly locks out with E20, do not continue resetting it without correcting the underlying problem; call a qualified technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Ignition Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements