No.	H₂ %	CH₄ %	C₂H₂ %	C₂H₄ %	C₂H₆ %	CO %	Fault
1	Normal	Normal	Normal	Severe Overheating	Normal	Normal	TF
2	Normal	Sparking	Normal	Severe Overheating	Local Overheating	Normal	TF
3	Arcing, Corona	Sparking	Arcing	Severe Overheating	Local Overheating	Normal	TF-H
4	Normal	Sparking	Normal	Severe Overheating	Local Overheating	Severe Overloading	DHE
5	Normal	Sparking	Arcing	Severe Overheating	Local Overheating	Normal	TF