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Ac fuse blow again

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Old 08-09-2018, 07:49 PM
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Default Ac fuse blow again

J changed the course for the ac 2 days ago, and last night it blew..., why?
 
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Old 08-09-2018, 08:38 PM
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Either a short to ground or a very high draw across the clutch coil.
 
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Old 08-09-2018, 09:14 PM
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Originally Posted by tony1963 View Post
Either a short to ground or a very high draw across the clutch coil.
hi Tony, I appreciate your answer, but I don't understand, not Volvo savvy, ;(
 
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Old 08-10-2018, 07:33 AM
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These are general electrical terms. A short to ground is another way of saying that the positive 12 volt wire is rubbing against the steel body, creating a short circuit to the grounded car body. That condition will pop a fuse.

The other is the clutch coil on the compressor. They can go bad and draw a very high current, drawing enough power to pop a fuse. They can also become internally short circuited.
 
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