Xyfb Water: Heater Manual

| Code | Meaning | Action | | :--- | :--- | :--- | | | Temperature sensor failure | Contact support. Do not use. | | E2 | Overheating protection triggered | Unplug for 30 minutes; check for blocked water outlet. | | E3 | Water flow insufficient | Increase water pressure or clean inlet filter. | | E4 | Outlet water > 65°C | Reduce temperature setting immediately. | | --- (Flashing) | No water flow | Ensure water supply valve is fully open. |

Example quick diagnostics:

Example installation checklist (tank electric): xyfb water heater manual

Upper heating element burned out (electric) or gas valve stuck (gas). Manual solution: For electric, test continuity across the element terminals. Resistance should be 10-20 ohms. For gas, tap the gas valve gently with a wrench handle to free a stuck solenoid. | Code | Meaning | Action | |