E14 error code appears; spa may not start heating cycle and may shut down shortly after power-up.

Safety first: Unplug the spa before any inspection. Internal high-voltage components can remain charged after unplugging; do not open the housing unless qualified.

• Observe behavior: Listen for clicking sounds from the pump/heater unit when turning heat on. No click or continuous clicking can indicate relay issues.
• Check for overheating signs: If the unit smells burnt or the housing is unusually hot, discontinue use immediately.
• Power reset: Unplug for 30 minutes and retry. If E14 returns immediately when heat is requested, the control circuitry is likely damaged.
• Professional service: Heater relay or triac replacement requires PCB-level repair. Most users should replace the entire pump/heater assembly rather than attempting board repair.

Warning: Do not attempt to bypass heater controls or hard-wire the heater; this is extremely dangerous and can cause fire or severe injury.