Display shows Er2 or ERR2 and spa may not heat or may shut down pumps
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power at the GFCI breaker and verify no voltage is present before touching heater wiring. This work is best left to qualified technicians.
Er2/ERR2 indicates a problem in the heater power circuit.
- Inspect heater terminals: Remove the control pack cover and check the heater connections for tightness, corrosion, or signs of arcing.
- Check heater resistance: With wires removed and power off, measure resistance across the heater element terminals. Compare to specifications; a shorted or open element must be replaced.
- Look for board damage: Examine the control board around the heater relay for burnt traces or components.
Because heater circuit faults involve high current, replacement of the heater or control board should be performed by a spa professional.
Repair Difficulty
Required Part
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