Popping fuses on Volvo 2020

[JeremyF]

On the 2020 there is a multi-fuse block to protect the glow plug and starter motor relays. The fuse block contains 4 fuses, if it fails, one just moves to the next good one.

The design suggests that they pop quite frequently, but Ive lost all 4 over the course of 3 weekends. Any idea why they might be popping?

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[tome]

Sounds like you may have a damaged wire on the live side of one of the relays. Can you help narrow it down by describing what you were doing when they went (eg starting or applying heat)?

It's unlikely to be a relay coil as it would fail open-circuit. Don't have my VP handbook here but will look next time to see what else it may be protecting.

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[JeremyF]

Doing nothing Tome! On 3 occasions it had popped after coming down to the boat after a week. I leave the master switch on when connected to shorepower.

On the 4th occasion it had popped at some time between starting the engine and running it for 2 hrs, switching off for 15 mins, then attempting to restart.

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