Truma Combi 4 problem.

[izwozral]

Just spent a cold week in Wales due to heater not working. Having spoken to Truma Services this morning, it is likely to be low gas pressure caused by LPG oily residue in the regulator. They recommend a dealer carry out a standing and working pressure test which may then entail a new regulator to be fitted, they also recommend fitting filters for each bottle.
I am beginning to think that having gone to the expense of buying and fitting two 11kg Gaslow bottles may have been a false economy. It appears that the filters have to be changed fairly regularly at £45 each. Or have I got this wrong?

 

[Roger Haworth]

I have used a Truma combi boiler with a Gaslow system since 2008 with no problems.

 

[colinm]

Did you tell them the 'fault code' off the circuit board?
My Combi 4 flashed up a code for 'faulty connection' worked my way throu it and turned out a wriggle of connector on back of control panel sorted it.

 

[delicagirl]

Just spent a cold week in Wales due to heater not working. Having spoken to Truma Services this morning, it is likely to be low gas pressure caused by LPG oily residue in the regulator. They recommend a dealer carry out a standing and working pressure test which may then entail a new regulator to be fitted, they also recommend fitting filters for each bottle.
I am beginning to think that having gone to the expense of buying and fitting two 11kg Gaslow bottles may have been a false economy. It appears that the filters have to be changed fairly regularly at £45 each. Or have I got this wrong?

long before I got my Gasit system my gas fire would intermittently stop firing up - one gas engineer told me exactly what you have been told Izzy , and the next one said that advice was round-cylindrical-things and changed the gas fire ignition battery

its also been suggested to me that the wind can extinguish the flame if one of the pipes is facing the wrong way ......

who knows.....

 

[izwozral]

Did you tell them the 'fault code' off the circuit board?
My Combi 4 flashed up a code for 'faulty connection' worked my way throu it and turned out a wriggle of connector on back of control panel sorted it.

Yes, gave them the fault code which indicated low gas pressure, although, the fridge & cooker works fine. Maybe the combi needs a higher gas pressure?

When you say 'wriggle of connector on back of control panel', do you mean wiring to the pcb where the flashing leds are?

 

[izwozral]

I have used a Truma combi boiler with a Gaslow system since 2008 with no problems.

Is that with or without filters?

 

[Roger Haworth]

Is that with or without filters?

As far as I am aware there are no filters between the Gaslow cylinders and the regulator. Each cylinder is connected directly by a Gaslow hose to a Gaslow "T piece" pressure gauge which is screwed directly onto the regulator. Here's a photo of the system:

 

[maxi77]

Just spent a cold week in Wales due to heater not working. Having spoken to Truma Services this morning, it is likely to be low gas pressure caused by LPG oily residue in the regulator. They recommend a dealer carry out a standing and working pressure test which may then entail a new regulator to be fitted, they also recommend fitting filters for each bottle.
I am beginning to think that having gone to the expense of buying and fitting two 11kg Gaslow bottles may have been a false economy. It appears that the filters have to be changed fairly regularly at £45 each. Or have I got this wrong?

Having used autogas for 3 years including 2 six month periods overseas I have had no problems with either truma or low pressure. There is a known problem that some regulators are having problems with residue, but I believe this is as common with calor type bottles as well as autogas. Sounds very like a pass the buck answer, not our problem go away.

 

[colinm]

Yes, gave them the fault code which indicated low gas pressure, although, the fridge & cooker works fine. Maybe the combi needs a higher gas pressure?

When you say 'wriggle of connector on back of control panel', do you mean wiring to the pcb where the flashing leds are?

At first I followed instructions and wriggled wires on pcb, then went to wall switch/control and wriggled wires on back of that, this solved the problem.
But it is worth mentioning that Truma regs and in particular the crashsafe reg has a known problem with clogging, and that is with calor and auto gas.

 

[izwozral]

As far as I am aware there are no filters between the Gaslow cylinders and the regulator. Each cylinder is connected directly by a Gaslow hose to a Gaslow "T piece" pressure gauge which is screwed directly onto the regulator. Here's a photo of the system:


View attachment 40479

I notice that your regulator is a lot higher above the cylinder than mine, whereas, mine is just slightly higher. I wonder if this could be a factor?

 

[izwozral]

Having used autogas for 3 years including 2 six month periods overseas I have had no problems with either truma or low pressure. There is a known problem that some regulators are having problems with residue, but I believe this is as common with calor type bottles as well as autogas. Sounds very like a pass the buck answer, not our problem go away.

Is your regulator quite a bit higher than the cylinder, like in the picture Roger has posted?

 

[korky]

Truma Combi 4 problem

Having used autogas for 3 years including 2 six month periods overseas I have had no problems with either truma or low pressure. There is a known problem that some regulators are having problems with residue, but I believe this is as common with calor type bottles as well as autogas. Sounds very like a pass the buck answer, not our problem go away.

I changed my Truma reg. for this very reason. No problem with it at the time but didn't want a failure half way up some foreign mountain. Just not worth the hassle. Kept Truma for a spare and fitted a Cavagna. I believe Clesse also good replacement and think Gasit do their own reg. as well. Would not use Truma reg. again although many in use with no problem, they are known to be prone to clogging. The filters are just good for sales.

Regards, Korky.

 

[Roger Haworth]

I notice that your regulator is a lot higher above the cylinder than mine, whereas, mine is just slightly higher. I wonder if this could be a factor?

You could be right. I have 7Kg cylinders which are much less high than your 11Kg ones. Is it possible that when your cylinders are full liquefied gas could get up into the regulator when cornering/braking/going up or down hill? If this happened could it clog up the regulator?

 

[Deleted member 19733]

Just spent a cold week in Wales due to heater not working. Having spoken to Truma Services this morning, it is likely to be low gas pressure caused by LPG oily residue in the regulator. They recommend a dealer carry out a standing and working pressure test which may then entail a new regulator to be fitted, they also recommend fitting filters for each bottle.
I am beginning to think that having gone to the expense of buying and fitting two 11kg Gaslow bottles may have been a false economy. It appears that the filters have to be changed fairly regularly at £45 each. Or have I got this wrong?

Gaslow recommends to change the filter elements once per year.
BTW I think I mught have picked up dodgy gas in Spain, so just bought the filters.

:goodluck::cheers:

 

[izwozral]

You could be right. I have 7Kg cylinders which are much less high than your 11Kg ones. Is it possible that when your cylinders are full liquefied gas could get up into the regulator when cornering/braking/going up or down hill? If this happened could it clog up the regulator?

I think it could Roger. The regulator was originally connected to two 7kg bottles, I replaced one for a 11kg but didn't move the regulator up because it was still above the cylinder - just. It may be best to raise the new regulator and fit a couple of filters as a secondary precaution.

 

[maxi77]

Is your regulator quite a bit higher than the cylinder, like in the picture Roger has posted?

Not as high, my gas it bottle is the biggest I could fit in the locker the regulator is only a bit higher than the top of the bottle. Bearing in mind the bottle design is intended to guarantee only vapour take of it seems odd that a non vapour is carried of with the gas. A more likely scenario is the gunge condenses out in the connecting pipe and gets carried into the regulator that way. It is also a good story to cover bad design, after all in the days of bottle mounted regulators this was never heard of.

 

[colinm]

I changed my Truma reg. for this very reason. No problem with it at the time but didn't want a failure half way up some foreign mountain. Just not worth the hassle. Kept Truma for a spare and fitted a Cavagna. I believe Clesse also good replacement and think Gasit do their own reg. as well. Would not use Truma reg. again although many in use with no problem, they are known to be prone to clogging. The filters are just good for sales.

Regards, Korky.

I have a Truma crashsafe system fitted but keep the old Clesse reg in the gas locker as backup.

I once had a calor bottle with dodgey valve seat, the main reason I spotted it was oily bubbles around the joint, shut off the bottle valve and undid the pipe without letting pressure off in the system, it sprayed out a blast of oil vapour.

 

[GWAYGWAY]

I once lent a filled smallish Calor bottle to one of my Drivers for a longish trip as he had a camping stove in the cab, He turned it on and oil sprayed out of the jets making a sticky mess under the stove. He gave it back still filled, as he could not use it because of the oil. You were not meant to get oil in proper bottles from Calor were you????? I took it back and got a change.

 

[izwozral]

Having just spent £130 on a new regulator and a pair of filters, I am still no further forward, bloody thing still isn't working.


Anybody got other ideas what it could be?

 

[QFour]

Having just spent £130 on a new regulator and a pair of filters, I am still no further forward, bloody thing still isn't working.


Anybody got other ideas what it could be?

Partially blocked pipe from cylinder to Truma heater. Trapped pipe that's been flattened by something moving. Has someone knocked the gas shut off cock ours is inside one of the cupboards.

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