To Next PageTo Next PageWhy is the water not hot enough in my Navien NPE-180A2?
If the hot water is not hot enough, first check the water heater's temperature setting. Also, check for cross plumbing between the cold and hot water lines.
What to do if the water from my Navien Water Heater faucet is cold?
If the water from your hot water faucet is cold, try these steps: First, clean the cold water inlet filter. Then, fully open the hot water faucet. If an error code is displayed, refer to “5.2 Understanding Error Codes” on page 17.
Why is the water too hot from my Navien Water Heater?
If the water is too hot, check the water heater’s temperature setting.
How do I troubleshoot error code E109 on a Navien Water Heater?
If you see error code E109, clean the intake air filter.
Why does it take so long for hot water to reach my Navien Water Heater fixtures?
If it takes too long for hot water to reach the fixtures, have a contractor install a circulation return line from the farthest faucet back to the water heater.
How to fix Navien NPE-180A2 error code E016?
If you see error code E016, try these steps: Clean the cold water inlet filter and flush the heat exchanger.
How to resolve Navien NPE-180A2 error code E030?
If you see error code E030, try these steps: Clean the cold water inlet filter and flush the heat exchanger.
How to fix Navien Water Heater error E004?
If you see error code E004, make sure the electrical cord is properly grounded.
What to do if no water comes out of my Navien Water Heater?
If no water comes out when you open the hot water tap, make sure the shut-off valves on the hot and cold pipes are open. If an error code is displayed, refer to “5.2 Understanding Error Codes” on page 17.
What to do if Navien NPE-180A2 displays error code E438?
If you see error code E438, check if the circulation pump is working correctly.
Details the models and main features of the Navien NPE series water heaters.
Identifies key components and their locations on the water heater unit.
Explains the functions and symbols displayed on the water heater's front control panel.
Instructions for powering the water heater on and off using the front panel button.
Guidance on safely setting and adjusting the water temperature for optimal comfort and safety.
Steps to reset the water heater to resolve error messages or operational issues.
Instructions for activating Commercial Mode for higher water temperature settings.
Procedure for cleaning the exterior of the water heater safely and effectively.
Steps for draining water from the heater for maintenance or freeze prevention.
Detailed instructions for flushing the heat exchanger, including required items and caution.
Process for cleaning the water inlet and recirculation filters to ensure proper water flow.
Procedure for cleaning the air intake filter to prevent operational errors and ensure performance.
Guidelines and steps to prevent freezing damage to the water heater.
A chart outlining common problems, their causes, and recommended solutions.
Explanation of error codes displayed on the panel and their corresponding self-diagnostic actions.
Details the labor, parts, and heat exchanger warranty durations for different applications.
Steps for obtaining warranty repair service and required information.
Explains Navien's service policy and conditions that void the limited warranty.
Options for service and information required when contacting technical support.
General| Type | Tankless |
|---|---|
| Category | Residential |
| Fuel Type | Natural Gas/Propane |
| Energy Factor | 0.96 |
| Electrical Requirements | 120V, 60Hz |
| Heat Exchanger | Stainless Steel |
| Minimum Input BTU | 15, 000 BTU/h |
| Vent Type | PVC, CPVC, Polypropylene |
| Gas Connection | 3/4" NPT |
| Water Connection | 3/4" NPT |
| Temperature Range | 140°F |
| Warranty | 15 years heat exchanger, 5 years parts |
