This is a basic video about the Glow Plug and the Atomizing Screen in the 5KW Chinese |Diesel Air Heaters.
For these heaters to start they -
1. They must have clean fuel.
2. They must have a clean atomizing screen, a working glow plug and a clean air inlet to the glow plug and screen.
If the fuel delivery system is ok, the next common problem for a non start is a Glow Plug and Atomizing Screen issue.
The most common problems here are soot, carbon, dirt and bugs blocking the little combustion start air inlet hole.
Soot, carbon and dirt on the atomizing screen.
Soot, carbon and dirt on the glow plug.
If you consider the glow plug / atomizing screen in a very broad sense as a pilot light, and realize that if you get no ignition here the main burner will NOT light.
You must have an appropriate filter on the combustion air inlet hose to prevent bugs, dirt, stones etc getting sucked into the combustion chamber.
You must use quality fuel and proper in use heater practices.
1. Run the heater on high for 10 to 15 minutes after prolonged use at a minimum setting to burn off any excess soot.
2. Don't try burning silly stuff like engine oil, vegetable oil, or diesel and engine oil mixes. Most oil burns dirty and creates soot and carbon in the heater.
It is rare to have a glow plug problem, apart from soot buildup, unless you crack or break one. Obviously you can not see if it is glowing red but your heater current draw should jump from about 1 amp draw up to 8 to 10 amps draw when the the glow plug indicator light comes up on the controller.
I hope this gives you a little more understanding of these heaters. J
This is a link to one screen supplier with the fastest delivery from China.
www.ebay.com.au/itm/5Pc-Glow-...