Trumatic C4002 circulation fan

Martin P

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Fold the tabs back Look out for the notch in the cover that aligns with the bump on the rear end. One thought. Make sure that the brush braids are not so long that they will short on the motor casing. When all back together connect to a 12v battery. White to pos black to neg. My motor spun up and ran a treat Happy days M
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harrow

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As you say these carbon brushes can easily be filed down to make them smaller and agreed you need to watch out for any small springs before they disappear into the distance. Another tip is using an old tooth brush to clean around the commutator.
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Martin P

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As you say these carbon brushes can easily be filed down to make them smaller and agreed you need to watch out for any small springs before they disappear into the distance. Another tip is using an old tooth brush to clean around the commutator. That is a good tip. Also having a good worksurface and taking it steady. Truma uk were not a great deal of help. Their answer would probably have been to buy a complete new boiler. For the sake of 5 quid it is worthwhile having a go at new brushes.
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ari

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Hello Martin P ! I have C 6002 EH model and fan not working... Whether that newer fan, 34020-61300 , worked well? https://wildcamping.co.uk/threads/trumatic-c4002-circulation-fan.75607/
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Martin P

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Well. The fan worked well for a couple of trips , probably ten days use in all but we now have a circuit board fault. Whether it is linked to the old fan brushes burning out or the new fan compatability issues I couldnt currently say. Still looking for a fix for the circuit board. If you cant find the exact motor I would probably go the new brushes option. I am still looking to get our circuit board repaired but truma are very unhelpful about releasing circuit diagrams etc
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Fitzykar

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Have the same problem and totally agree about Truma service support, they really want me to purchase a new unit. I'm going to see if i can find a company to do the overhaul of the motor
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ari

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Martin! Can you upload pictures from pcb boards on both sides? My friend is an electronics expert. He can look at them..
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Martin P

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Martin! Can you upload pictures from pcb boards on both sides? My friend is an electronics expert. He can look at them.. Sorry. Missed this post.
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Martin P

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Just had my Truma circuit board back from being repaired. Found a guy who specialises in these. (And other boards). His name is Richard from A and R electronic development ltd. Various board repairs are at various prices but mine was £50 for a full diagnostic check then £100 for the repair. The repair is guaranteed for a month against the same fault recurring.. Richard is pretty knowledgeable about Truma stuff which I found a bit of a lifesaver Should anybody else need a Truma circuit board repaired here are his contact details. Www.arelectronics.co.uk Rsol@arelectronics.co.uk 01543 579302 I will post follow up when fitted at the weekend
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