Navien tankless water heaters provide convenient and efficient water heating solutions. Like any appliance, they sometimes encounter issues. This guide helps homeowners troubleshoot and resolve these problems.
Importance of Troubleshooting:
- Avoid discomfort and inconvenience from lack of hot water
- Prevent potential damage from leaks or malfunctions
- Save money on costly professional repairs
Understanding Error Codes:
Navien heaters display error codes to indicate specific problems. Some common errors include:
- E001: Ignition Failure (check igniter, flame sensor, gas pressure, burner intake)
- E003: Ignition Sequence Error (check gas pressure, flame sensor, gas valve, control board)
- E012: Inlet Water Temperature Sensor Fault (check wiring, sensor, debris)
- E013: Outlet Water Temperature Sensor Fault (check wiring, sensor, debris)
Common Problems and Solutions:
- Heater Won’t Ignite:
- Verify gas supply is on
- Remove debris from air intake and exhaust vents
- Reset high limit switch
- Contact a professional for control board or igniter issues
- Lack of Hot Water:
- Increase water flow
- Clean water inlet filter
- Flush heat exchanger to remove scale
- Check flow sensor
- Inspect burner for obstructions
- Leaking Water:
- Tighten loose connections
- Check relief valve
- Have heat exchanger inspected by a technician
- Reduce condensation by adding pipe insulation
- High Energy Bills:
- Check for water leaks
- Verify temperature setting is appropriate
- Have technician inspect components and remove scale buildup
- Replace defective burner or flow sensor
Preventive Maintenance:
- Annual professional maintenance
- Flushing to prevent scale buildup
- Checking gas and water pressure
- Replacing filters and gaskets
- Keeping vents and intakes clear
- Monitoring error codes
Following these troubleshooting steps and implementing preventive measures helps homeowners maintain their Navien tankless water heaters and provide a reliable and efficient hot water supply.
