I have noted a number of items in this discussion that I over looked.
Comments about gas solenoids from some who should know indicates that perhaps they do not know, are you aware that the newer gas/electric fridges are fitted with a solenoid controlled gas valve, it's used to control the gas for when the fridge is being controlled by it's thermostat.
The expressed danger of having a solenoid with it's DC control wiring attached to or near the gas bottle, have you looked into the rear of a newer gas/electric fridge and noted all the 12VDC and 230VAC wiring plus the gas line and fittings, good grief they should be banned... true ??
Today I heard of a person who wanted an old gas/electric fridge replaced, he was quoted a very large sum for the work to install and certify, no way he said went elsewhere and got a quote for a third of the original quote and told that as he was replacing existing fridge he could do it and then have the Gas Fitter connect and certify it.
I also would like to know from those who are Gas Fitters, are you also qualified Cabinet makers, carpenters and Electricians as all these activities are required when fitting Gas Fridges and stoves.