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Old 04-20-2025, 05:52 PM   #1
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2018 22' Sport
Salem , OR
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Question Bath ceiling light doesn't work. 2018 22FB Sport.

I replaced the ceiling light fixture, no help. I don't know really how to identify which fuse is associated with it. Everything else in the rig works, and it seems unlikely that the bathroom light would have it's own fuse. Could it be the water heater?! I don't know if the water heater is working or not because we never use it and we are just out of storage, the tank is empty and needs cleaning. Thanks for helping me if you can!
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Old 04-20-2025, 08:22 PM   #2
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RE: Bath Ceiling Light Doesn't Work. 2018 22FB Sport

Greetings Rob Gramenz!

Quote:
Originally Posted by Rob Gramenz View Post
I replaced the ceiling light fixture, no help. I don't know really how to identify which fuse is associated with it. Everything else in the rig works, and it seems unlikely that the bathroom light would have it's own fuse. Could it be the water heater?! I don't know if the water heater is working or not because we never use it and we are just out of storage, the tank is empty and needs cleaning. Thanks for helping me if you can!
Your bathroom light is in all probability 12-volt DC, and while the electronic spark igniter for the water heater is also 12-volt DC I wouldn't anticipate that they shared the same fuse or 12-volt breaker.

If you didn't get the owners' manual with your trailer, you can obtain a pdf copy from Airstream's website at:

2018 Airstream Sport Owners' Manual

You can also download a pdf copy of the parts book from the Airstream website as well, at:

2018 Airstream Sport Parts Manual

The owners' manual should help in identifying which fuse controls that light's circuit, and it may be the same circuit as the spark igniter for the water heater -- a clue may be if the switches for both the light and the water heater are near each other.

Good luck with your investigation!

Kevin
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Old 04-21-2025, 06:11 AM   #3
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2025 25' Trade Wind
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Use your voltmeter before choosing things to replace.

Loose or corroded connection
Defective light switch
Blown fuse
Defective LED fixture
LED fixture wired backwards.

Post make and model of fuse panel for better advice. Many used by AS have a small red light that indicates a blown fuse when the appliance on that circuit is turned "ON".
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