Xyfb Water Heater Manual ((exclusive)) -

Tankless XYFB models require a minimum flow rate (usually 0.5 gallons per minute) to ignite. Open the tap completely. Water is Lukewarm

The unit attempted to ignite three times but failed to establish a flame. Fix: Confirm that your main gas valve is fully open. Check if other gas appliances in your home are working.

Shows the current gallons or litres per minute passing through the heat exchanger. xyfb water heater manual

Turn off the power. Let the water cool down completely. Check for low water flow or scaling inside the pipes that might trap heat. Restart the unit. Error Code E2: Sensor Failure

Use a multimeter to test the upper and lower heating elements for continuity. Replace any burnt-out elements. Water Temperature Fluctuates ("Cold Water Sandwich") Tankless XYFB models require a minimum flow rate (usually 0

Getting Started with Your XY-FB Tankless Water Heater Whether you just unboxed your or you're trying to troubleshoot a "no heat" issue, having a clear roadmap is essential. This compact 3000W-3400W unit is a favorite for under-sink installations in kitchens and bathrooms, but it requires precise setup to function safely and effectively. 1. Critical Pre-Installation Requirements

: Touch screen for temperature adjustment (68–122°F / 20–50°C). Fix: Confirm that your main gas valve is fully open

: Most models are rated for 3000W–3500W at 110V/220V depending on the specific variant. Ensure your circuit breaker and wire gauge can handle this load. Wiring Guide : Red : Positive (+) or Hot. Black/Blue : Negative (-) or Neutral. Yellow/Green : Ground.

Connect the wires to their corresponding terminals: (Live/Phase), N (Neutral), and G (Ground/Earth).

Water temperatures over 125°F (51°C) can cause severe burns instantly. Always test the water temperature before bathing or showering.

Ensure water supply lines match the ¾-inch or ½-inch NPT connections specified on your model plate.