Introdução
This guide explains how to repair a Navien NPE-240A tankless water heater when the display shows error code E110. This code indicates an issue with the air intake vent, which may be caused by a blockage or a damaged air intake collar.
This guide demonstrates how to clear any obstructions and replace the air intake collar.
Note: Before you begin, check the display screen for Error Code E110 to ensure this is the right guide for your tankless water heater.
Caution: Turn off the unit’s power and shut off the gas supply. Failing to do so can cause injury or damage.
Ferramentas
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Use an impact driver with a 5/16" nut driver to loosen the #6 machine nut screw from the clamp.
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Loosen the clamp and disconnect the pipe and vent collars from the water heater to access the air intake filter.
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Inspect the air intake filter and vent pipes for dirt or obstructions.
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Clear any debris by hand if necessary.
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Use an impact driver with a Phillips head screwdriver bit to remove the four 1/2" machine screws that connect the damaged air intake vent collar to the water heater.
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Remove the damaged air intake vent collar.
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Install the new air intake vent collar.
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Secure the new vent collar with the four 1/2" Phillips machine screws using the impact driver with a screwdriver bit.
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Use the impact driver with a 5/16" nut driver to reconnect the pipe and vent collars to the water heater.
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Turn on the power to the unit and open the gas supply.
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Power on the heater to confirm that the E110 error code no longer appears.
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To reassemble your device, follow these instructions in reverse order.
