HEAT
Freeflow Spas Heater Activation Failure

HEAT or HTR error; heater does not energize even though set temperature is higher than water temperature.

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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

Open heater element, Tripped high-limit, Faulty heater relay on control board, Incorrect dip switch or jumper settings on control board

How to Fix / Troubleshooting

Safety first: Turn off power at the GFCI. Heater circuits carry lethal voltage.

  • 1. Confirm demand: Ensure the set temperature is above current water temperature and that the spa is not in economy/sleep mode.
  • 2. Check indicator: Look for a heater icon or indicator LED on the control board. If the board calls for heat but the heater stays cold, the element or relay may be open.
  • 3. Inspect wiring: Verify heater wires are tight at both the heater terminals and control board.
  • 4. Reset high-limit: Some heaters have a manual reset button. If present, press it gently until it clicks.

Testing heater resistance and live voltage should only be done by a qualified technician. Replace the heater assembly or control board as indicated by test results.

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Repair Difficulty

Professional Required 5/5

Required Part

Heater Assembly
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