LS-THC Voltage Problem!

I have a miller spectrum 875 auto-line and I believe I have it wired correctly for a raw voltage situation as it has no cnc port. When I do the test it says the low voltage is fine but it isn’t reading any high voltage output from the torch?? The torch fires as it should.
I am at a loss…
Any help would be greatly appreciated.

Have you gone through the THC Troubleshooting Flow Chart? It is a comprehensive guide to diagnosing THC issues. Linked from here:

yes i have went through as much as i could and i still have no voltage reading but the torch is firing. I called my miller technician and he said I had it wired to the correct spots on the plasma the only thing he could come up with is that there is something wrong with the thc module?