waeco absorbsion fridge

[Rufus]

I have have a Waeco 3 way fridge, combicool 40 that the flame failure is not working, its
a kind I haven't seen before, looks like some kind of solenoid, rather than a conventional thermocouple, can anyone tell me how it works, and how to test it ?

I have pictures on photobucket but they won't upload on here.

[Rufus]

Here we go, this capsule fits into the gas valve,