E08
Sta-Rite
Control Board Communication Error
Heater shows E08 and does not respond to thermostat or spa/pool mode changes
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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
Faulty main control board, Loose ribbon cable between display and main board, Voltage spikes or water intrusion on PCB
How to Fix / Troubleshooting
Safety: Disconnect power at the breaker before opening the control compartment. Avoid static discharge to electronic components.
- Inspect control compartment: Remove the front panel and check for signs of moisture, corrosion, or insect infestation on the control board area.
- Check ribbon and harness connections: Gently unplug and replug the display ribbon cable and all harness connectors to the main control board, ensuring a snug fit.
- Look for burnt components: Examine the Sta-Rite control board for burnt traces, bulging capacitors, or discoloration. If present, the board is likely damaged.
- Verify supply voltage: Use a multimeter to confirm correct line voltage at the heater input and low-voltage transformer output per Sta-Rite specs.
- Replace control board if needed: If connections are good and voltage is correct but E08 persists, replace the Sta-Rite main control board or display board as specified in the service manual.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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