I think it could be a pssible cause, just have to check it all thru the stages as its only on when firing up................. this very flash chinese knock off that I have just fitted the instructions look really great but nothing about the first firing up, priming that initial start one little bit, going to be interesting when I do, I will just bleed fel to the pump then hit start , hopefully it will all fire up properly because I am in no mood to stuff around with the thing... if it blows fuses I will certainly have a heads up on what to look for .... Fancy a shed that has all types of oil,and petrol and no diesel, son in law is a wood butcher so anything relating to steel is hard to find and the pride and joy is an EH .... I have decided no more Doc Drover house calls for vans, I need my own shed...............
Of course if it all works fine don't dig too deep just let it go, you know it so you own it, no need to get too anal with it............... I blew up 2 heaters before I had them sorted out........well I cooked the frst one the 2nd was an internal fault and not me for once....................... most important to not extend the exhaust unless you go to around a 45mm exhaust pipe, just extending the 25mm pipe will cause it to burn out by back pressure heat......... Some of these cheapies are really quite good at $300 last for years.....