Jandy AquaLink RS / iAquaLink WiFi-Enabled Pool & Spa Automation Controller with Mobile App Control SENSOR SHORT Error Fix: Temperature Sensor Circuit Shorted

Error code SENSOR SHORT on the Jandy AquaLink RS / iAquaLink WiFi-Enabled Pool & Spa Automation Controller with Mobile App Control means: Temperature Sensor Circuit Shorted. The temperature sensor wires are shorted together, causing the controller to read an impossibly low resistance value — this makes the controller think the water temperature is extremely high; causes include damaged wire insulation allowing the conductors to touch, water in the conduit creating a conductive path between the wires, a pinched cable at a conduit fitting, or a failed sensor; check for physical damage to the sensor wire; replace the sensor cable if the insulation is damaged

The most successful fix is "Replace Temperature Sensor Cable Assembly" (medium difficulty, ~60 minutes). Estimated DIY cost: $25-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace Temperature Sensor Cable Assembly") is rated medium difficulty and takes about 60 minutes. Tools needed: T15 Torx screwdriver, Multimeter, Wire cutters.

DIY cost: $25-$40. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

The Jandy AquaLink RS / iAquaLink WiFi-Enabled Pool & Spa Automation Controller with Mobile App Control has 8 other known error codes, including: CHECK SYSTEM (General System Fault), COMM ERR (Communication Error — RS-485 Bus Failure), FREEZE PROT (Freeze Protection Mode Active), HEATER COOL (Heater Cooldown Cycle Active), HIGH CURRENT (High Current Draw on Monitored Circuit), and 3 more.