Advertisement
Activity B | Flow Meter Troubleshooting
The flow meter is located on the inlet side of the water heater and has 4 Phillips head screws and a small black wire
(see image above). The flow meter is equipped with a small propeller that must spin freely counter clockwise in order
to activate heater. The flow meter controls the activation of the water heater by sensing water flow. If the flow meter
is functioning properly, the LED display will illuminate once water is flowing through the system and will continue to
stay illuminated while water is running. If the LED display not illuminated while water is running, follow the steps
below.
If this is not a new installation (same-day install) skip Step 1.
1. The simplest way to clean out flow meter is to run a high volume of water through your system in order to
flush out any particles that can be blocking the propeller from spinning freely.
a. Turn on at least 5/6 GPM for around 3 minutes. This could be a bath tub, shower, and a sink or 2
showers and a sink.
b. Once you have a high volume of water flowing through your heater check to make sure your LED
display is illuminated. This can take up to 3 minutes. (If you begin to hear a load humming noise
coming from the heater don't worry this is normal)
2. If the LED display is now illuminated with water flow, you can now begin to slow down the GPM's. Close all
running water taps except for 1 sink to verify your water is been heating and your LED display is staying on.
Leave this sink running for approximately 45/60 seconds, within this time the unit should be heating water. (If
the LED display is not staying illuminated. Move to Step 3)
3.
The next exercise is to clean the flow meter, sometimes sediments or debris get caught in the flow meter
area, this will cause the unit not to turn on. Turn breakers to the unit off, shut off water to the unit and open a
few faucets of hot water to drain water and relief pressure within the heater.
a. Identify flow meter & remove 4 screws and pull cover off, remove impeller and rinse it out.
| © 2018 All rights reserved. | EcoSmart™ | www.ecosmartus.com |
Page | 6
Advertisement
