Assuming it's all switched ON correctly I can only assume you've lost gas from the system. HAven't heard of it with a Tig before but I had it happen with a Mazda Astina I had and it was just a connector that had worked loose. 10 minute job to fix BUT unfortunately in your case you're a long way form help. I guess all you can do is check that it IS all ON correctly, check there's no slack in the compressor drive belt and then just wait till you're in a position to get it fixed. Bugger
Cheers
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