Jump to content

Dim Light's


Guest Coachman

Recommended Posts

Guest Coachman

Hi All I have a problem with the Light's going dim when I turn the Tap on. i have put a new Batterie on the vann but it's still the same. any help and advice would be welcome John

Link to comment
Share on other sites

Hi All  I have a problem with the Light's going dim when I turn the Tap on. i have put a new Batterie on the vann but it's still the same. any help and advice would be welcome  John

42623[/snapback]

 

We have this if the electrics are switched to direct - ie via charger. If we switch the electrics to Van then it is less of a problem BUT we do have an 110 amp battery.

Link to comment
Share on other sites

Presumably this is the 12V lights that you’re talking about as the water pump is 12V. You need to work out what parts of the electrical circuits are common to both and you can only really do this with a circuit diagram. The fault will be in the part of the circuit that is common, I’d be expecting to find a high resistance or loose connection somewhere, maybe an earth point.

Is there anything else it effects, for instance if the heater is running do you hear the fan speed drop? I presume all taps have the same effect and that the water pressure is ok.

If on further checking you find that there are other items suffering then check the connections to the battery. Are they totally clean, free of oxide, grease or any other debris? Are they tight? Note: Grease is an insulator and will cause a high resistance.

Remember, if you’re still under warranty get the dealer to sort it. It may be useful to find a mobile servicing person to come and have a look.

Hope this helps.

Nev and Tina

Link to comment
Share on other sites

Although I also have a 110 amp battery my lights dim very slightly when the pump is working. Our water system is pressurised and it is only noticed when the water flow is low and the pump is cycling.

Guess it depends on what you mean by dim.

Link to comment
Share on other sites

Guest Coachman

A Big Thank you to you all I will have a look at the earth . And if it is no better I will get it looked at. It is an old vann. John

Link to comment
Share on other sites

Guest Hobbybod
Replace your 12 volt wiring with a larger guage.

Caravan manufacturers usually save every penny the can by using a spec. which barely suffices.

The dimming is caused by voltage drop across the cable length.

42636[/snapback]

Roy's right! . . . . . . Again. :D

 

If it's the halogen/tungsten lights that dim then voltage drop is the most likely problem; fluorescent lighting, (once up to brightness) shouldn't really dim, unless they've really 'saved' on the gauge of wiring, as the current draw is far less than for tungsten/halogen lighting.

 

Re-wiring with decent gauge cable could be a real pain in the @r5e! A BIG battery, or two, will help.

Link to comment
Share on other sites

This reminds me of when we first got our van old which incidental is nine years ago tonight since we first slept in it.

Point is 'how old' could have something to do with it as our Florrie's used to almost go out when the Surflo internal pumps was used. One reason was the old fashioned lights but a lot of it was the bearings of the again old pump needing some fresh grease.

Older internal pumps even in good order need as much as 7 amps and this will always dim the lights a little.

gary1s.gif

 

Arc Systems are specialist Carver caravan product repairers, committed to providing a comprehensive service as well as spare parts for these popular heaters.

Link to comment
Share on other sites

Hi. The easy way to cure most of the problems above ( will work for large internal pump or standard type pump, pressure switched or micro switched) fit a 12v relay for the pump. Feed to the relay direct from the battery, obviously fused. The switch for the relay from either pressure switch or micro switches. Output from the relay to pump. Feed to and from relay using large wire. The plus point is it will make your pump spin faster plus will give less voltage drop across the whole system.

 

Hope this helps one or two.

 

 

Pete

 

ps the other major plus point for the above is you will never burn out another micro switch or pressure switch, whichever. As the taps are only turning on a relay and not a high voltage load.

Volvo
Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...