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Troubleshooting Open Neutral Reading Only When Air Conditioner Is Running  

Question:

When I plug in the Camco defender surge protector to the camper, it reads correct wiring, but as soon as I start running the A/C, it shows open neutral. Please help! I dont know what else to do. Thanks!

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Expert Reply:

The Camco RV Power Defender Voltage Protector - 50 Amp # CAM55306 is reading correct when you are in basic use. So we know the shore power is not the issue. We know that AC units do pull a lot of power, so the momentary open neutral wouldn't be a concern but if it says that way the entire time you are running your AC, I would have the wiring looked at to confirm you are safe in its use.

expert reply by:
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Jason S

C.m.

6/4/2020

Thank you so much.There was an open neutral un the wiring. Had it fixed. Works perfectly now. Glad we had this device to diagnose the problem. Thank you for your advice.

Reg

5/23/2021

@Cm Having the same issue, was is the air conditioner wires?

Thomas B.

6/26/2022

Also have the same issue on brand new Jayco travel trailer

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