power module systems PMS7 (1 Viewer)

[Harry ullrich]

Have just purchased an elderly Herald Insignia 400E 1997 it came with the manual but nothing on the above unit the top right hand rocker says heater (water or heating) and the row of fuses 10 amps what do they fuse?

 

[buttons]

Hi and Welcome......

 

[Madeinengland]

Hello

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[pappajohn]

If there's no indication as to what they protect then Pull each fuse in turn and see what stops working.
I suspect lights (more than one fuse), water pump, heater fan, 12v sockets.

 

[Mickey1]

Mickey.

 

[Jim]

In the absence of a manual (a lot of older vans don't have them, see below) unless we find a funster that has your van, then you will have to do the trial and error method as John suggests above. Switch everything on and start pulling fuses.

A few years ago, it was quite common to buy a motorhome that did not have a comprehensive handbook or manual, if they offered one it was often generic and covered all their models. Sometimes the "manual" was likely to be just a collection of fitting and use instructions for all the separate bits of kit that the manufacturer had fitted, such a fridge, water heater etc.

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[Harry ullrich]

Thanks for all reply will try pulling the fees 1 at a time

 

[EX51SSS]

 

[magsnjim]

looking for help my first post....
I was changing a switch on my pms7 and managed to fuse the box I now have no lights ,water pump switch or heater switch all gone checked the 10 amp fuses all ok is there a main fuse for this or have a messed up big style recomendations please ...Jim

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[TheBig1]

there is often a fuse near the battery that feeds the board. If that has blown, then you would have no power to the pms7

 

[magsnjim]

thx i have checked that and changed it but alas no change

 

[TheBig1]

have you checked the cutoff relay?

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[magsnjim]

no where would i find this please

 

[TheBig1]

I am trying to remember back to when these boards were common. Some had a relay on a board behind the control panel, others you follow the wire back towards the battery

 

[magsnjim]

i will check out the board for it , which battery leisure or car pls driving me nuts this is

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[TheBig1]

i will check out the board for it , which battery leisure or car pls driving me nuts this is

leisure battery to power the fusebox, but with british vans the convention has stupidly been to fit a relay that cuts off power to the habitation area when the engine is running. If this relay or the feed to it is compromised you will get no power to lights pump etc

on some models there is also a 3 way switch on the board, leisure battey/off/van battery to choose the power source. this would also cut power to the fuses

 

[Jev88]

Later PMS7 made out of aluminium. Has the external charger fitted into its rear.
The charger has a push and twist fuse holder in its top. If the charger stops working that is the first thing to check

Taken from - http://www.expluginsteve.co.uk/using-a-caravan-generator

 

[ambulancekidd]

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[Snoopy]

Hi and welcome ?

 

[magsnjim]

thanks for the help will check it out tomorrow fingers crossed

 

[Jev88]

Later PMS7 made out of aluminium. Has the external charger fitted into its rear.
The charger has a push and twist fuse holder in its top. If the charger stops working that is the first thing to check

Taken from - http://www.expluginsteve.co.uk/using-a-caravan-generator

View attachment 366442

There a few specialist people out there that used to work for Plug-In Systems and another that is from ARC - he can service Carver control PCB's for instance so well worth adding to your address book (My MH is 1999 so you will probably encounter similar age related issues). PS if you have a Carver water heater then although they can still be repaired and serviced by specialists (MCEA engineers) take note that the Propex Malaga heater fits approximately the same space but is a 13 litre capacity rather than 9 litre and obviosuly uses more modern burner and controls.......

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[f6c]

Welcome aboard