Atwood Water Heater Circuit Board Testing

This guide on Atwood Water Heater Circuit Board Testing will explain: 

• How to test circuit board on Atwood Water Heater?
• Step-by-step procedure about Atwood Water Heater Circuit Board Replacement

Atwood Water Heater Circuit Board Testing [5 Simple Steps]

You can use a multimeter to test the circuit board on the Atwood Water Heater. Removing the circuit board is a must when performing this task. Also, don’t forget to set the multimeter to the ohms scale. 

Check the continuity of all tracks on the wire harness connection of the circuit board. Above all, turn the power off to prioritize your safety while testing the circuit board. 

Now, let’s go along with the step-by-step Atwood Water Heater circuit board testing instructions: 

1. Cross the leads of your digital multimeter to verify it is registering continuity. You can hear a beep when crossing the leads of the meter. 

2. Test the power track: Place the negative lead of your multimeter on the ground (green wire) track of the edge connection while the positive probe will be positioned on the top power (brown wire) track of the edge connection. If there is no continuity, I bet the circuit board is defective.

3. Test the lamp track: Touch the meter’s negative lead to the ground (green wire) track of the edge connection and set the positive probe to the lamp (blue wire) path of the edge connection. If there is no continuity, understand it blows out the lamp track. It occurs due to a short in the blue wire between the unit and the switch. 

4. Test the valve track: Set the negative lead of the meter to the ground track of the edge connection while you should place the positive lead to the valve (red wire) path of the edge connection. If no continuity presents, I bet the valve track gets blown out. 

5. Once you follow every step to test each track and verify the circuit board is at fault, move forward to replace this component. The next chapter below will show you the replacement procedure. 

Relevant: Atwood Water Heater Troubleshooting Manual

Atwood Water Heater Circuit Board Replacement [How-To Step]

Once you ensure the circuit board is the bad boy, you must replace it. Regarding this, order a new replacement board. You can buy an OEM part or Dinosaur circuit board for the Atwood Water Heater. 

After getting the part in your hand, follow these steps to replace the Atwood Water Heater Circuit Board: 

• Ensure you turn off both the electric and gas supply to the unit.

• Unscrew the access panel and locate the control board on the unit.

• Unplug the wire connectors and igniter wire from the control board. 

• Unbolt the control board from the unit. You can use a nut driver to unscrew the control board. 

• Install a new control board and plug the wire harness connectors and the igniter into the control board. Secure the control board with the nut. Cover the control board with a plastic protective cover.

•  Restore the power to the water heater. 

End-Note

Follow every step in this Atwood Water Heater Circuit Board Testing Manual to test the board like a pro. Once you verify the board is at fault following the procedure I mentioned, replace the circuit board to let the water heater work like a charm.