On the covered Navien tankless water heater, E060 means abnormal Dual Venturi limit switch operation. Sub-code 1 is ON, sub-code 2 is Close OFF and sub-code 3 is Open ON. First, reset the heater once from its front panel. Then: Navien's actions: check the Dual Venturi connection (sub-code 1), test the Dual Venturi for proper operation using TEST mode (sub-code 2), and check the gas orifice for obstructions (sub-code 3).
Try in this order
0 of 4 completedWhat to do first
ReversibleReset the heater once from its front panel.
Correct only the documented fault domain
ReversibleNavien's actions: check the Dual Venturi connection (sub-code 1), test the Dual Venturi for proper operation using TEST mode (sub-code 2), and check the gas orifice for obstructions (sub-code 3).
Inspect the dual venturi wiring
ReversibleLook for cracked or loose wiring to the dual venturi. A faulty venturi opens and closes repeatedly in test mode; one that does not move points to the controller.
Write down the code and call Navien
ReversibleRecord E060, the model and the serial number, then contact Navien technical support or a licensed technician, who can run the dual venturi test mode.
Evidence ledger
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Exact questions
Common questions about “Navien tankless water heater code E060”
What does E060 mean on a Navien tankless water heater?+
Abnormal Dual Venturi limit switch operation. Sub-code 1 is ON, sub-code 2 is Close OFF and sub-code 3 is Open ON.
Is Navien E060 something I can fix?+
Only the visual wiring check is owner-safe. The venturi test and any replacement are for a licensed technician.
Why does E060 sometimes clear and come back later?+
A switch that is on the edge of failing can work for days and then misread, so a code that clears once and returns can be a sign the part is wearing rather than a one-off glitch.
What is the dual venturi on a Navien?+
It is the part that regulates the flow of air and gas to the burner, so a fault with it stops the heater from firing correctly.
Should I call Navien for E060?+
Yes, for anything beyond looking at the wiring. Navien technical support gives a number for service.
Does E060 mean the Navien is leaking gas?+
No. It reports an abnormality in the dual venturi circuit that regulates air and gas, so the heater stops rather than fire incorrectly; a technician tests the venturi and the controller.
What do the sub-codes after E060 tell me?+
They say which switch state the heater saw: sub-code 1 is ON, sub-code 2 is Close OFF and sub-code 3 is Open ON. Write the sub-code down before you reset, because a technician will ask for it.
Can I keep using hot water while E060 is showing?+
Treat the heater as faulted. A reset once is reasonable, but a code that comes straight back means the heater is not controlling its venturi properly and needs service.