Fairland heater frequently shuts off due to low water flow when the pool pump is on low speed.

Safety: Adjust pump speeds via the pump controller; no need to open the heater.

Steps:

• Increase pump speed: Set a higher RPM when the Fairland heater is scheduled to run, as per heater’s minimum flow specification.
• Adjust bypass: Ensure enough water is directed through the heater, not entirely around it.
• Scheduling: Coordinate pump and heater run times so that the pump is at adequate speed whenever heating is enabled.

If issues persist:

• A technician may adjust or replace the flow switch or recommend plumbing changes.