TCMT tankless ignition problem

[dougcullen]

Hello, I'm troubleshooting a TCMT 10L Tankless hot water heater. The igniter is sparking, water is flowing, the propane ignites for maybe 1 second then the flame goes out every time. Any ideas ?

 

[Fitter30]

 

[Sponsor]

 

[dougcullen]

Hi Fitter30 thanks for sending the video, I had come across that online. Let's say it was the thermocouple or the gas solenoid switch, how can I find those parts ?

 

[John Gayewski]

Sounds like flame sensor

 

[Master Plumber Mark]

smack it with a hammer