Fuses under drivers seat

[Billy192]

Hi. Does anyone know what these fuses are for? It’s a 2021 etrusco They are on the positive line to the leisure battery. I think the 50 is the alternator charge and the 20 the Schaudt ELB 31 charging but no idea on the 1 and 2 amp ones

 

[autorouter]

In the EBL31 manual it says there should be a 50A on the starter battery to EBL wire, a 20A on the starter battery to EBL wire for the fridge, a 50A on the leisure battery to EBL wire, a 2A on the leisure battery to EBL sensor wire and a 2A on the alternator D+ (engine running) signal wire to the EBL.

The 50A is the main wire to the EBL from the leisure battery. All the other fuses on the front of the EBL are powered by that 50A fuse. If you remove that fuse then all the devices running from the EBL should go dead. If they don't, it's the starter battery fuse, not the leisure battery. The 2A fuse next to it is a voltage sensor wire for measuring the battery voltage without the voltage drop from the heavy currents interfering with the measurement. If that fuse blows/is removed, the EBL thinks there's no leisure battery so nothing will switch on. If it still works, then maybe it's the D+ fuse, not the voltage sensor fuse.

I don't know what the 20A and 1A fuses are, if they are definitely coming from the leisure battery. From the starter battery there should be another 50A fuse, which is for the alternator charging of the leisure battery while the engine is running. There also should be a 20A fuse for the fridge 12V element supply, from the alternator/starter battery when the engine is running. And a fuse about 1A or 2A for the D+ (engine running) signal that the EBL uses to switch various relays when the engine is running.

 

[Billy192]

In the EBL31 manual it says there should be a 50A on the starter battery to EBL wire, a 20A on the starter battery to EBL wire for the fridge, a 50A on the leisure battery to EBL wire, a 2A on the leisure battery to EBL sensor wire and a 2A on the alternator D+ (engine running) signal wire to the EBL.

The 50A is the main wire to the EBL from the leisure battery. All the other fuses on the front of the EBL are powered by that 50A fuse. If you remove that fuse then all the devices running from the EBL should go dead. If they don't, it's the starter battery fuse, not the leisure battery. The 2A fuse next to it is a voltage sensor wire for measuring the battery voltage without the voltage drop from the heavy currents interfering with the measurement. If that fuse blows/is removed, the EBL thinks there's no leisure battery so nothing will switch on. If it still works, then maybe it's the D+ fuse, not the voltage sensor fuse.

I don't know what the 20A and 1A fuses are, if they are definitely coming from the leisure battery. From the starter battery there should be another 50A fuse, which is for the alternator charging of the leisure battery while the engine is running. There also should be a 20A fuse for the fridge 12V element supply, from the alternator/starter battery when the engine is running. And a fuse about 1A or 2A for the D+ (engine running) signal that the EBL uses to switch various relays when the engine is running.

Thanks I can do a few tests now

 

[Billy192]

In the EBL31 manual it says there should be a 50A on the starter battery to EBL wire, a 20A on the starter battery to EBL wire for the fridge, a 50A on the leisure battery to EBL wire, a 2A on the leisure battery to EBL sensor wire and a 2A on the alternator D+ (engine running) signal wire to the EBL.

The 50A is the main wire to the EBL from the leisure battery. All the other fuses on the front of the EBL are powered by that 50A fuse. If you remove that fuse then all the devices running from the EBL should go dead. If they don't, it's the starter battery fuse, not the leisure battery. The 2A fuse next to it is a voltage sensor wire for measuring the battery voltage without the voltage drop from the heavy currents interfering with the measurement. If that fuse blows/is removed, the EBL thinks there's no leisure battery so nothing will switch on. If it still works, then maybe it's the D+ fuse, not the voltage sensor fuse.

I don't know what the 20A and 1A fuses are, if they are definitely coming from the leisure battery. From the starter battery there should be another 50A fuse, which is for the alternator charging of the leisure battery while the engine is running.
There also should be a 20A fuse for the fridge
12V element supply, from the alternator/starter battery when the engine is running. And a fuse about 1A or 2A for the D+ (engine running) signal that the EBL uses to switch various relays when the engine is running.

did a few tests today and. as you say "There also should be a 20A fuse for the fridge 12V element supply" i started the van and put the fridge on 12v all good pulled the 20 amp fuse and fridge stopped. but the cable runs from the leisure battery. i am happy to move the positive wires (4) to there new home i think the 1amp is the control panel and the 2amp is the truma.

my quandary is the earths 5 brown 1 white 2 of the brown are quite heavy i think / assume 1 is the alternator charging could the other be the earth for the fridge?

 

[autorouter]

Sounds like someone's rewired it. Starting from the beginning, the wire with the 50A fuse from the leisure battery is a thick wire that should go to the leisure battery main terminal at the back of the EBL. Probably labelled 'WB' (Wohnbatterie). The wire with the 50A fuse from the starter battery is also a thick wire that should go to the starter battery main terminal at the back of the EBL, labelled SB. One, or maybe two, of the brown earth wires should go there too, to the third terminal (Negative).

Have you got the EBL31 manual, which has a wiring diagram at the end?

The fridge 12V heating element wires come from the front of the EBL, from the 4-way connector (Block 1). Pin1 or Pin4 is the positive, Pin3 is the negative, and Pin2 is a D+ (engine running) signal to the fridge control board. If the fridge is manual selection only, not AES (Automatic Energy Selection) then it doesn't need a D+ signal.

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[Billy192]

Sounds like someone's rewired it. Starting from the beginning, the wire with the 50A fuse from the leisure battery is a thick wire that should go to the leisure battery main terminal at the back of the EBL. Probably labelled 'WB' (Wohnbatterie). The wire with the 50A fuse from the starter battery is also a thick wire that should go to the starter battery main terminal at the back of the EBL, labelled SB. One, or maybe two, of the brown earth wires should go there too, to the third terminal (Negative).

Have you got the EBL31 manual, which has a wiring diagram at the end?

sorry no i will search now

 

[autorouter]

The manufacturer Schaudt GMBH has recently been incorporated into Lippert Leisure. They have been having trouble with the downloads from the Schaudt Support downloads section, so you might have trouble finding the manual. Here's the page with the wiring diagram, to be going on with.

 

[Billy192]

well all cables swapped over fingers crossed all seems working. i changed the booster to lithium and turned the alternator charge to 43amps, it has 3 settings 43, 63 and 80. when fridge is on 12v (while engine running) the amps to the battery drop to 23, i surmise the fridge takes 20Amps from alternator. My question will 43amps over work the alternator ?