Hi, 
I have strange issue, well for me anyway, my gas geyser tries to ignite but, no flames.

I then have to disconnect the orange gas pipe from the gas bottle, you can hear the gas in the pipe escape, poof, and if I then connect it again open the tap we have flames and hot water.

why? it is like there is a gas block in the pipe which does not allow the gas from the bottle to push through, any thoughts on the issue?

Thanks

Edited August 19, 20241 yr by FJM
spelling mistake

If you have recently replaced your gas cylinder, you may have a vacuum lock. To clear this, remove the gas pipe from the regulator and open the gas cylinder for a few seconds. Switch off the cylinder, reconnect pipe & switch cylinder back on or if the regulator on your gas cylinder is more than 3 years old it may need replacing. A faulty regulator restricts the gas flow and the geyser will not ignite without sufficient gas. It is always best buy a good quality regulator (not the cheapest on the market)

That would have been my next try, to replace the regulator.
Thanks for the confirmation.

 

13 hours ago, FJM said:

Hi, 
I have strange issue, well for me anyway, my gas geyser tries to ignite but, no flames.

I then have to disconnect the orange gas pipe from the gas bottle, you can hear the gas in the pipe escape, poof, and if I then connect it again open the tap we have flames and hot water.

why? it is like there is a gas block in the pipe which does not allow the gas from the bottle to push through, any thoughts on the issue?

Thanks

Here's what a guy in a gas shop told me.

When you exchange bottles, the empties are purged with nitrogen. Sometimes a little nitrogen remains in the bottle when it's filled. The nitrogent is lighter than the LPG and rises to the top of the bottle. It has very little effect on the weight of the gas that you've paid for because Nitrogen weighs so little. But the nitrogen is at the top of the cylinder and must be gotten out before you can start using the LPG.

So take the cylinder into an open space and open the tap for 30 seconds. If you have nitrogen in your bottle, that will escape.

13 hours ago, TaliaB said:

If you have recently replaced your gas cylinder, you may have a vacuum lock. To clear this, remove the gas pipe from the regulator and open the gas cylinder for a few seconds. Switch off the cylinder, reconnect pipe & switch cylinder back on or if the regulator on your gas cylinder is more than 3 years old it may need replacing. A faulty regulator restricts the gas flow and the geyser will not ignite without sufficient gas. It is always best buy a good quality regulator (not the cheapest on the market)

This right here seems to be the reason, Last night I replaced a empty 9kg lpg cylinder with a cylinder thats about half way full, and I got this failure to ignite condition, just like I get every time I change the cylinder.

I just loosen the pipe connection at the geyser and let a little gas escape, then I just tighten the gas pipe again, and Ignition!

6 hours ago, Bobster. said:

Here's what a guy in a gas shop told me.

The nitrogent is lighter than the LPG and rises to the top of the bottle. It has very little effect on the weight of the gas that you've paid for because Nitrogen weighs so little. 

So take the cylinder into an open space and open the tap for 30 seconds. If you have nitrogen in your bottle, that will escape.

Very interesting but - nitrogen weighs about 63% that LPG weighs. As long as there is not too much nitrogen in the bottle it seems fine.