E302 🟡 Repair Required
Navien Error Code E302: Remote Controller Communication
⚠️ Your Navien boiler's remote controller is having trouble communicating with the main unit. This could lead to system malfunctions if not addressed.
How to Fix Navien Code E302
- Check if the remote controller is within range of the main unit and there are no obstructions between them
- Move other electronic devices or appliances away from the remote controller and main unit to reduce interference
- Replace the batteries in the remote controller and try resetting it
What Does Navien Error Code E302 Mean?
The E302 error on your Navien boiler indicates a communication issue between the remote controller and the main unit. This could be due to a variety of reasons, such as a weak signal, interference, or a faulty controller. While this error doesn't pose an immediate safety risk, it's important to address it to prevent potential system malfunctions or reduced efficiency.
Common Causes of Navien Code E302
- Weak or interrupted signal between the remote controller and the main unit
- Interference from other electronic devices or appliances
- Faulty remote controller or main unit
- Incorrect controller programming or settings
Applicable Navien Models
Source Documentation
This error code is documented in 4 official Navien technical manuals.
NFB-H Installation & Operation ManualPage 116
ReasonLow Water Pressure
ActionCheck water pressure.
Navien NFB-H Installation & Operation ManualPage 116
ReasonLow Water Pressure
ActionCheck water pressure.
Navien NHB-H Installation & Operation ManualPage 119
ReasonLow Water Pressure
ActionCheck water pressure.
Navien NPF Installation & Operation ManualPage 126
ReasonLow water level
ActionThis error occurs when the water tank in the furnace is not filled with enough water. (When the water filling option is set to manual.) ● Open the water inlet cover on the lower-front cover of the furnace, and then fill the water tank with water.
Need a Pro to Fix Navien Code E302?
A licensed HVAC technician can diagnose and fix this issue quickly.
Find a Licensed Tech Near You →Replacement Parts for Navien Tankless Water Heater Code E302
Navien Remote Controller OEM: NAVIEN-RC1