Error Code Guide - Navien Mate EQM 350 User Manual

Error Code Guide

If an error code is constantly displayed on the display window, receive
an inspection by contacting the Navien customer support center in the US.
(877-689-1541).
Error
Error Description
Code
Er02 Water shortage error
Water tank supply
Er05 temperature sensor
error
Er11 Water level detection
Error
Er16 Water tank overheating
error
Er17 Heating disorder Error
Er18 Return water temperature
sensor error
Er28 Water leakage error
18
Cause
There is a lack of water.
There is a disorder in
the supply temperature.
Normal water level
detection is dysfunctional.
The temperature of the
water tank is overheated.
There is a disorder with
a part related to heating.
There is a disorder in
the return water
temperature sensor.
There is a water leak
occurring from the pad
or from the boiler.
Action to Be Taken
Replenish the water in the
heating unit.
Please contact the
Navien Technical Support.
Please contact the dealer or
Navien Technical Support.
Please contact the dealer or
Navien Technical Support.
Please contact the dealer or
Navien Technical Support.
Please contact the dealer or
Navien Technical Support.
Please contact the dealer or
Navien Technical Support.