Display shows EC or ECON, spa heats slowly and may not maintain high temperatures during heavy use.

Safety: No electrical work required.

• Change mode: Press the MODE or TEMP button sequence (varies by Beachcomber model) to toggle between STANDARD, ECONOMY, and SLEEP modes. Select STANDARD for continuous temperature maintenance.
• Review manual: Consult the Beachcomber owner's manual for your specific topside to confirm the correct button sequence.

If EC remains and the spa will not heat properly even in STANDARD mode, there may be a sensor or control board issue.