AO6
Jandy
Advanced Air Flow Diagnostic Fault
Display shows AO6; heater fails to complete startup sequence.
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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.
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Possible Causes
Incorrect venting configuration, Severe vent restriction, Blower speed feedback error, Control board firmware issue
How to Fix / Troubleshooting
Safety first: Turn off power and do not operate the heater with suspected venting issues.
- Verify venting: Compare the installed vent size, length, and number of elbows to Jandy installation specifications. Correct any undersized or overly long vent runs.
- Check terminations: Ensure vent terminations are installed per manufacturer guidelines and are not blocked.
- Inspect blower feedback wiring: Some models use a feedback signal from the blower; verify the harness is intact and properly connected.
- If AO6 persists: A technician should evaluate blower performance and update or replace the control board if required.
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Repair Difficulty
Professional Required
5/5
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