Interactive diagnostic wizard for the Jandy AquaLink RS pool and spa automation system. Diagnose no power, blank display, equipment not responding, sensor errors, and freeze protection faults.
Select the symptom your AquaLink RS is showing to get step-by-step troubleshooting guidance.
Click a symptom to see diagnostic steps.
This interactive troubleshooting wizard is designed specifically for the Jandy AquaLink RS pool and spa automation system. Whether you are a pool homeowner trying to figure out why your equipment is not responding or a service technician running a structured diagnostic, the wizard adapts to your role and provides the appropriate level of guidance.
Select the "Homeowner" role for safe, practical checks you can perform yourself, or switch to "Technician" mode for detailed diagnostic procedures including transformer voltage measurements, relay testing, and DIP switch configuration checks. Each symptom card links to a comprehensive written guide when you need to go deeper.
The table below summarizes the most common Jandy AquaLink RS problems and their typical causes. Click the troubleshooter above for step-by-step diagnosis of each issue.
| Symptom | Description |
|---|---|
| No Power / Blank Display | Control panel not powering on — typically caused by a tripped breaker, failed transformer, or loose power connection inside the panel |
| Equipment Not Responding | Commands from the panel have no effect on pumps, heaters, or other equipment — often caused by unseated relays, incorrect DIP switch settings, or corroded wiring |
| Temperature Sensor Error | Incorrect or missing temperature reading on the display — caused by a failed sensor, damaged wiring, or improper sensor installation |
| Freeze Protection Failure | Equipment not activating during freezing temperatures — caused by a missing or misconfigured air temperature sensor, incorrect DIP switch setting, or missing freeze protection kit |
For comprehensive walkthroughs of each issue with photos and wiring diagrams, see the individual guides linked from the troubleshooter above or visit our equipment troubleshooting guide index.
A blank display on the AquaLink RS typically means no power is reaching the control board. Start by checking the breaker that supplies the AquaLink panel. If the breaker has not tripped, the problem is usually the 24VAC transformer inside the panel, a loose orange power plug connection, or a blown fuse on the board. A technician can test the transformer output with a multimeter to confirm.
When you press a button on the AquaLink RS and nothing happens, the most common causes are unseated relays, incorrect DIP switch configuration, or corroded wire connections at the relay board. Try power cycling the system by turning off the breaker for 30 seconds. A technician can reseat the relays, verify the DIP switch settings match the equipment configuration, and test relay output with a multimeter when each circuit is commanded on.
A temperature sensor error means the AquaLink RS is reading an incorrect or missing water or air temperature. The sensor is a thermistor that should read approximately 10K ohms at room temperature. A technician will test the sensor resistance, check the wiring from the sensor to the AquaLink board for damage, and verify the sensor is properly installed in the plumbing. If the resistance is out of spec (open or shorted), the sensor needs replacement.
If your pool equipment does not activate during freezing temperatures, check that the outdoor air temperature sensor is installed in a location that is not in direct sunlight or near a heat source. A technician should verify that DIP switch S1 #7 is in the correct position for freeze protection, confirm that the Part #6996 freeze protection kit is installed, and test the air temperature sensor resistance. Also verify the freeze setpoint temperature is configured correctly in the system settings.
Yes. Select the "Homeowner" role and the wizard will show only the checks that are safe and practical for a non-professional to perform. Technician-level steps such as transformer voltage measurements and relay testing are hidden unless you switch to Technician mode. Always follow the safety warnings on screen, and consult a licensed pool service professional for any repair you are not comfortable performing.
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