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wigandiver

Dometic fridge. Pageant Champagne Series 7.

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When on site the Freezer compartment will freeze, or keep frozen food frozen, but after towing, we noticed that the frozen food in the freezer compartment would defrost.  We had moved the switch to the battery setting, so the car would provide 12v to the fridge when travelling. I checked that light stayed on when the car ignition was on.

 

I noticed when closing the door that it wheezed, as though it had contracted asthma.

I'm wondering if the door seal is going, or whether this is normal.

Any opinions please ?

 

 

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The energy available from the car when its running is a lot less than you get from the mains supply especially as the car alternator is running the car, charging the car battery, charging the van battery and trying to feed the fridge. If your wiring is under par then you can get a big voltage drop between the alternator and the fridge which will reduce the energy available even more

 

You really need to see how much power is actually getting to the fridge by measuring both the current at voltage at the back of the fridge to see how much is being lost in the car wiring, connections and even van wiring. You can then see if you can improve it by sorting out any dodgy connections or wiring.

 

 

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It may be that inadequate wiring gives voltage drop which reduces the fridge's power on 12v - as above, check the voltage at the fridge compared to the car battery, when the engine is running of course.

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Thanks folks. I'll check that next time we are out.

 

If the voltage is OK,  can anyone offer any alternative suggestions please ?

 

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What car are you towing with?

If it has  Euro 5 or 6 engine the charging system of the car does not charge the car battery continuously, this can also lead to the caravan battery and fridge not receiving the power from the car.

One way round this is to fit a unit such as the Sterling Power Wildside unit.

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13 hours ago, Vanning Man said:

What car are you towing with?

If it has  Euro 5 or 6 engine the charging system of the car does not charge the car battery continuously, this can also lead to the caravan battery and fridge not receiving the power from the car.

One way round this is to fit a unit such as the Sterling Power Wildside unit.

Still have the 2006 VW Sharan auto diesel, so no stop/start.

Euro 4 according to this  

https://www.rac.co.uk/drive/advice/emissions/euro-emissions-standards/

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