Trumar combi 6 E so I came across a problem yesterday run it on gas full power it will fire up and run for about 60 seconds shut down the gas and the fans carry on maybe 40 or 50 seconds and it fires up the gas again this is on full gas power and it will continue to ignite and extinguish and each time the gap gets shorter but on logo gas power it will run all night it run all night last night so it was running this morning on low and turned it up this morning the gas turned to full power again but this time it only ignited for about 15 seconds and then shut down the gas part the fans continue and then it reignites again but this time only ignites for five seconds the funds continue then it reignites again but this time it only ignites for one to two seconds the next time the fans speed up but it will not ignite now it's gone cold I'm sure it will ignite again I assume it's some form of a heat sensor letting it down or the fans running slow but can somebody tell me what it will actually be from this description and what sensor it will be and where to find it so it runs on low gas no problem only when you turn it up it keeps igniting an extinguishing itself continuous laugh with no fault it doesn't shut down it just keeps doing a repeated cycle I do not have the digital screen with to get fault codes I only have the old style one to five but if it ran out of gas that dial would flash red and the heater would shut down it's not doing that so I can't get fault code readings any help would be grateful