Truma C6002eh

Kell

Full Member

Messages
6
We’ve had our van for a few months but I don’t think the previous owners used the heater on gas during the last year or so. It works fine on hook up but won’t fire up on gas without help.
process of elimination has shown that the help it needs is warming up the area around the solenoid valve. This can be achieved by having the hot water on via hook up for half an hour, warming the area for a couple of minutes with a hair dryer or ten minutes with a hot water bottle. I’m guessing a new solenoid but at £120.. plus I’d welcome any thoughts.
2DF8F1A0-D88B-4068-8878-C66FCBA67199.jpeg
 

RoaminRog

Full Member

Messages
1,004
Hello, and welcome to the forum. Experience has taught me that a Truma 6002 EH is a very expensive hobby.
I have had to buy a new PCB at over £430, a new Control Panel, a new Power Selector Switch, a new combustion fan, all at over £100 each, and spent a small fortune on the labour charges of so-called Truma engineers.
When you attempt to light the heater on gas, do you get a green light on the Control Panel? If you do, the heater will spend about four and a half minutes doing a complete diagnostic check before it attempts to fire up.
If it finds anything wrong in the system, you will get a red light appear, next to the green one on the control panel.
 
Last edited:

Kell

Full Member

Messages
6
Hi Rog . Thanks.
I do get the green light to start with, then after a couple of minutes can hear the igniter click but then after about 20 seconds or so more I get the red light. When I warm up the solenoid area as mentioned above the instead of the red light coming on I hear the slight whump of the gas lighting and everything is fine.
From internet investigation, it sounds like a gas supply problem but only when the heater is starting from cold. So I’m thinking it can only be at the point that the gas enters the unit.
 

royh28

Full Member

Messages
129
Just a thought. Are you using Butane or Propane? :) 🦄
 

royh28

Full Member

Messages
129
Thought if butane it may be caused by low temperatures. 🦄
 

maingate

Full Member

Messages
355
There will be a spark electrode to ignite the gas/air mixture. If the unit has not been used for a long time try removing the wiring connections, check they are clean and refit them. It could be a poor ignition spark.

Another possibility is that the fan is sluggish through non use. If it does not get up to speed the boiler will not work. The heat you are applying might be just making the difference to it.
 

RoaminRog

Full Member

Messages
1,004
In my case, it is looking likely to be the circulation fan.
I have it booked into Truma at Derby on Wed, and they are going to check everything for me, including giving it a complete safety check, because it is so old. (2006)
The circulation fan is now obsolete, but Truma have four available for their own repairs and are not for sale.
Probably cost a fortune but we really want everything hunky dorey before the big trip to the foreign.
In your case, it sounds like a fault is being discovered by the diagnostic check, and refusing to fire up.
One thing you could check, at the back of you Sargent Unit, there are about half a dozen plugs. If you can get your fingers in there, it is quite common for one of the plugs to work loose and relatively straightforward to push it back in again.
 

mossypossy

Full Member

Messages
8
We have a 6002.
We had zero warm air heating on Monday. Hot water was fine.
Went out and bought an electric heater as we are on hookup.
Heater control switch did nothing.
Left it on overnight.
By morning it was all working again.
Has been fine since then.

Maybe mine is related to the regulator not being warm enough.
 

RoaminRog

Full Member

Messages
1,004
Turned up at Truma Derby yesterday, and were treated like Royalty.
The technician went through our heater with a fine tooth comb. He agreed that the circulation motor needed replacing and also the igniters were virtually burnt out.
In the mean time, we were treated to breakfast, limitless cups of tea/coffee and a very comfortable waiting room.
The work was finished by lunchtime but we opted to wait while they did a complete test and safety check and had a brilliant fish n chip lunch before leaving to come home.
Very satisfying day, and great knowing we can go on our foreign ‘grand day out’ without worrying whether the system was going to work or not!
 

2cv

Full Member

Messages
4,204
Glad that you’re sorted for your travels. We had a similar experience at Truma when our 4e had an intermittent fault. Good to see such good service from a company.
 

Martin P

Full Member

Messages
111
Hello, and welcome to the forum. Experience has taught me that a Truma 6002 EH is a very expensive hobby.
I have had to buy a new PCB at over £430, a new Control Panel, a new Power Selector Switch, a new combustion fan, all at over £100 each, and spent a small fortune on the labour charges of so-called Truma engineers.
When you attempt to light the heater on gas, do you get a green light on the Control Panel? If you do, the heater will spend about four and a half minutes doing a complete diagnostic check before it attempts to fire up.
If it finds anything wrong in the system, you will get a red light appear, next to the green one on the control panel.
Do you still have the old circuit board?
 

Martin P

Full Member

Messages
111
Hang on to it. I managed to repair mine but they are getting rare.
I also struggled to find a fan motor and ended up fitting new brushes to the motor I had.
 

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