Mains Switching off when connected to car?

OrionCalls replied on 08/08/2017 16:10

Posted on 08/08/2017 16:10

When I connect or disconnect  my car's electrics to the caravan the mains switch in the caravan turns off. I had never noticed this happening in my old caravan but only since getting a new van with Alde heating. (This is because the clock setting on the Alde Control console resets every time the mains is switched off).

I now know that I can buy an Alde accessory that gives a battery back up that would stop the Alde clock resetting.

Can anyone tell me:- 

Is it normal for the caravan's mains to switch off when hooking up?

Is the Alde battery back up easy to fit?

 

Thanks

replied on 08/08/2017 16:17

Posted on 08/08/2017 16:17

The user and all related content has been Deleted User

OrionCalls replied on 08/08/2017 16:23

Posted on 08/08/2017 16:23

Thanks for that very quick reply, I'll have to get the battery back up.

No it's the mains switch in the van that switches off when I connect/disconnect the car to the van.

If I switch the mains switch to "on" in the van and then connect to EHU the mains switch remains on!

replied on 08/08/2017 16:32

Posted on 08/08/2017 16:32

Is it normal for the caravan's mains to switch off when hooking up?

Yes unless you have a very long EHU lead on your travels.

 

Seriously - When you disconnect EHU lead it does not 'turn off' mains on any caravan that I have had. When next plugged into EHU everything on 230v is live again. Alde clock will have stopped however and time incorrect as on the microwave clock.

I never trouble to set the clock on the Alde system. We move every 5 days. Before we move I switch off the Alde as in cooler weather the pump will circulate if he ambient temperature is below the chosen temperature if left on.

When we arrive at site I switch on the heating and increase temp to our day time preference. Come bed time I turn down the temp. When I get up next morning I turn it up again.

Vicmallows replied on 08/08/2017 16:38

Posted on 08/08/2017 16:38

Do you mean that the RCD (The main switch in the caravan consumer unit which switches off all mains power, and has a test button on it) trips when you connect the car.   If so, there is a fault situation which should be investigated.

Although it would be technically possible, I have never heard of a system which intentionally disconnects the mains supply when you connect to the car  ..... and I can't really see any reason for such an arrangement.

(A loud warning sound to remind you to disconnect the EHU might be a good idea though!)

 

EDIT:  There seems to be some confusion because you use the term 'hooking-up'.  I read your post as meaning you are plugging your 'van into the car.  Others seem to be reading it as in ElectricHookUp  (EHU) to the mains.

replied on 08/08/2017 16:45

Posted on 08/08/2017 16:45

The user and all related content has been Deleted User

OrionCalls replied on 09/08/2017 11:35

Posted on 09/08/2017 11:35

I'm sorry I've confused things haven't I ?

 

It's when I "plug" the caravan into the car that the control panel I have photographed switches off.

Hope the photograph clarifies what I mean.

SUBBY replied on 09/08/2017 11:47

Posted on 09/08/2017 11:47

why on earth are you connecting to your car when still connected to the mains via your cable you should already be disconnected. i seen people drive off because they forgot to disconnect. a very silly practice in my opinion.

Don

OrionCalls replied on 09/08/2017 13:29

Posted on 09/08/2017 13:29

Don

I'm not Nothing to do with the caravan being connected to the EHU mains it's the caravan being plugged into car's 7pin connector 

OrionCalls replied on 09/08/2017 13:36

Posted on 09/08/2017 13:36

I asked the same question as I originally posted to the manufacturer of my caravan , Coachman (That's was the end of July).

 

I've just received their reply, which answers my question, but I do find it strange. Coachman's response is

I can confirm that when the caravan is connected to a towing vehicle the master switch will switch off, the only item that will receive power is the fridge."

Thanks for the responses received 

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