Blown a fuse (1 Viewer)

[vin0114]

Managed to short circuit the positive lead that connects to the P1 fitting on my EC400 PSU. According to the wiring diagram this lead passes through a 40 Amp fuse to the engine battery but I have checked the 40 Amp fuses in the fuses and relay box under the bonnet and all appear unbroken.

This is on a 2.3 2012 Fiat Ducato, does anyone know if there are any more 40 Amp fuses elsewhere?
Regards
Vin

 

[pappajohn]

It won't be in the base vehicle fuse box....not a factory item.
Keep looking, it's there somewhere.

 

[lunarman]

Is it one of the fuses on the vehicle battery terminal fuse panel

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[Speve]

Should be a fuse next to leisure batteries mine are in battery box.

 

[vin0114]

Is it one of the fuses on the vehicle battery terminal fuse panel

I will have another close look around the vehicle battery, its a 40 amp so hard to miss.

 

[vin0114]

Should be a fuse next to leisure batteries mine are in battery box.

will check around that area, this an Autocruise Rhythm panel van and the leisure bat sits in its own box behind the drivers seat.

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[Speve]

Probably in the box with the battery

 

[vin0114]

Still looking, not the 40a fuse adjacent to the leisure bat and not the 4 under the bonnet. Surely its got to be somewhere close to the vehicle bat? If all else fails I will consider running a separate 40a fused lead to the EC400. Routing it will be fun!

 

[vin0114]

Ok, have checked as far as I can but have not found iether 40 amp fuses that the diagram below clearly shows sit between the PSU's P1 and P2 connections and the leisure and engine batteries.
The engine battery sits in a floor cavity between and in front of the cab seats and the leisure bat sits in a box directly behind the driver's seat - 3 feet apart so the damn fuses must be close by????

There is an inspection panel that runs under the passenger seat but before I start to dismantle the van maybe someone may know what lies there?

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[berni109]

X250 vehicle battery is under the passenger floor.
Lift the carpet remove the floor panel and unscrew the metal plate. Fuses on the positive post connections.
If the vehicle starts normally its unlikely to be the starter battery fuse.

 

[TheBig1]

dont forget that at 40amp you may not be looking for a blade fuse and maybe a midi fuse bolted to the positive junction block on positive terminal. if so may look like fiat original wiring

 

[vin0114]

X250 vehicle battery is under the passenger floor.
Lift the carpet remove the floor panel and unscrew the metal plate. Fuses on the positive post connections.
If the vehicle starts normally its unlikely to be the starter battery fuse.

Thanks but I have already done this several times now and the fuses on the pos terminal post are okay and none are 40 amp anyway.

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[vin0114]

dont forget that at 40amp you may not be looking for a blade fuse and maybe a midi fuse bolted to the positive junction block on positive terminal. if so may look like fiat original wiring

Thanks already checked those.

 

[berni109]

There is an inspection panel that runs under the passenger seat
Its access to the top of the fuel tank fuel pump and sender unit

 

[vin0114]

There is an inspection panel that runs under the passenger seat
Its access to the top of the fuel tank fuel pump and sender unit

cheers Bernie, saved me looking.

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[lunarman]

Managed to short circuit the positive lead that connects to the P1 fitting on my EC400 PSU. According to the wiring diagram this lead passes through a 40 Amp fuse to the engine battery but I have checked the 40 Amp fuses in the fuses and relay box under the bonnet and all appear unbroken.

You donot say what the symptons now are.

The following is from the EC400 user guide:

A) Type / Selection For optimum performance and safety it is essential that only a proprietary brand LEISURE battery is used with a typical capacity of 75 to 120 Ah (Ampere / hours). A normal car battery is NOT suitable. This battery should always be connected when the system is in use. The PSU is configured to work with standard lead acid leisure batteries, and in most cases is also compatible with the latest range of Absorbed Glass Matt (AGM) batteries. Before fitting non-standard batteries please check that the charging profile described in 3.2 is suitable for the type of battery by referring to the battery documentation or battery manufacturer. Some vehicle installations can cater for two leisure batteries connected in parallel. In these cases it is recommended that two identical batteries are used. The battery feed is fitted with an inline fuse between the battery and the electrical harness, and is usually located immediately outside the battery compartment or within 500mm of the battery. The maximum rating of this fuse is 20A per battery. If a single battery is fitted to a motorhome, this fuse may be increased to 40A, however if two batteries are fitted each battery should be fused at a maximum of 20A. B) Installation & Removal

The fuse you are looking for should be within 50cm of the leisure battery.

 

[SUGGY]

phone the van converter up .. i had to do that on mine when the fuse went saves hours of looking and i am an Electrician ...

 

[vin0114]

You donot say what the symptons now are.

The following is from the EC400 user guide:

A) Type / Selection For optimum performance and safety it is essential that only a proprietary brand LEISURE battery is used with a typical capacity of 75 to 120 Ah (Ampere / hours). A normal car battery is NOT suitable. This battery should always be connected when the system is in use. The PSU is configured to work with standard lead acid leisure batteries, and in most cases is also compatible with the latest range of Absorbed Glass Matt (AGM) batteries. Before fitting non-standard batteries please check that the charging profile described in 3.2 is suitable for the type of battery by referring to the battery documentation or battery manufacturer. Some vehicle installations can cater for two leisure batteries connected in parallel. In these cases it is recommended that two identical batteries are used. The battery feed is fitted with an inline fuse between the battery and the electrical harness, and is usually located immediately outside the battery compartment or within 500mm of the battery. The maximum rating of this fuse is 20A per battery. If a single battery is fitted to a motorhome, this fuse may be increased to 40A, however if two batteries are fitted each battery should be fused at a maximum of 20A. B) Installation & Removal

The fuse you are looking for should be within 50cm of the leisure battery.

According to the circuit diagram the 40 amp fuse that blew protected the EC400 from the engine battery. When this fuse blew the only symptoms noticed were where the PCU was unable to see or display the state of the engine battery. All other functions appear to be unchanged. Both leisure and engine batteries are still charged when the engine is running.

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[vin0114]

phone the van converter up .. i had to do that on mine when the fuse went saves hours of looking and i am an Electrician ...

Thanks Stewart.

 

[vin0114]

You donot say what the symptons now are.

The following is from the EC400 user guide:

A) Type / Selection For optimum performance and safety it is essential that only a proprietary brand LEISURE battery is used with a typical capacity of 75 to 120 Ah (Ampere / hours). A normal car battery is NOT suitable. This battery should always be connected when the system is in use. The PSU is configured to work with standard lead acid leisure batteries, and in most cases is also compatible with the latest range of Absorbed Glass Matt (AGM) batteries. Before fitting non-standard batteries please check that the charging profile described in 3.2 is suitable for the type of battery by referring to the battery documentation or battery manufacturer. Some vehicle installations can cater for two leisure batteries connected in parallel. In these cases it is recommended that two identical batteries are used. The battery feed is fitted with an inline fuse between the battery and the electrical harness, and is usually located immediately outside the battery compartment or within 500mm of the battery. The maximum rating of this fuse is 20A per battery. If a single battery is fitted to a motorhome, this fuse may be increased to 40A, however if two batteries are fitted each battery should be fused at a maximum of 20A. B) Installation & Removal

The fuse you are looking for should be within 50cm of the leisure battery.

Thanks but my problem as stated is the fuse that that runs between the engine battery and the P1 terminal on the EC400 unit. The fuse on the Leisure battery circuit to the P2 terminal of the EC400 unit is where it should be and is not the problem.

 

[vin0114]

Got a nice reply from a very nice lady - Verity at Autocruise/Swift with the details below. I have further requested a copy of fig 4.

As I'm a quick on the draw numpty I thought that the access to this area must be hidden by the covers around the passenger side footwell area so after removing 4 panels found a lot of sawdust and muck left by the converter and a multi plug - no 40a fuse. Well at least I got a chance to clean the area and tidy up the unused connections that were just laid on the floor.

So next step tomorrow will be to look under that inspection panel that @berni109 posted gives access to the fuel tank bits. The 40amp must be in there?

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[TheBig1]

fuse 3 on figure 4 is a midi fuse. hard to see if they blow

 

[vin0114]

Still searching but....did get a reply from Swift/Autocruise with a pic and details where the leisure/auxiliary bats were connected - to point 3. Okay my engine bat says 70amp there against the diagram showing 50amp.

but also just noticed that the diagram is for a left hand drive so the passenger pillar mentioned may actually be on the driver's side? will continue looking.

 

[vin0114]

SUCCESS but all the diagrams pertaining to my problem for the EC400 and the starter battery terminals are incorrect at least for my registered 2012 (2011 built) Autocruise Rhythm PVC including the diagrams issued for my Autocruise by Swift 1096396 issued 09/2011 and the emailed info recently received from Swift.

The pic below shows a row of 3 pos terminals. I was advised by Swift that the the number 3 terminal - extreme right was the feed to follow. based on this advice I ignored the other connections and lifted all the panels in the cab area searching for the elusive 40a fuse to no avail.

The pos feed from the starter battery to the EC400 is not the extreme righthand 70amp fused connection. I fell into the trap that blown fuses clearly show that they have failed but these damn things connected directly to the battery do not. I checked all 3 for continuity and found No.1 extreme left to be dead. I had already purchased some 40amp Maxi fuses and I short circuited the dead 50amp fuse and hey presto the EC400 was connected.

I have been unable to replace the fuse above with like for like so have put in place a temporary 50amp Halfords box type fuse until I find the correct one. MTA 18011 32v 50amp.

Part of this vent had been damaged by a previous owner and being close to the EC400 was ideal for fitting these gizmos giving each battery status rather than lifting seats up to view the buried EC400.
Thanks for all your comments.

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[TheBig1]

50 amp MIDI fuse
http://www.ebay.co.uk/itm/MIDI-STRI...hash=item2cb3b603b2:m:m0w3I1BSsbcPLDliCzpXbEQ

 

[vin0114]

50 amp MIDI fuse
http://www.ebay.co.uk/itm/MIDI-STRI...hash=item2cb3b603b2:m:m0w3I1BSsbcPLDliCzpXbEQ

Thanks, just bought 2! I should have paid more attention to your comment, I thought you were saying its unlikely that these fail rather than its hard to see if they have failed. I did notice that some of these now sold do have a clear window that will show failure like the blade fuses do.

Any body want any 40amp fuses? Ive got 10 of em!

 

[mitzimad]

Thanks, just bought 2! I should have paid more attention to your comment, I thought you were saying its unlikely that these fail rather than its hard to see if they have failed. I did notice that some of these now sold do have a clear window that will show failure like the blade fuses do.

Any body want any 40amp fuses? Ive got 10 of em!

always test with fuses with a meter visual can send you up the wrong path

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