Reasons a oil heater would stop working

Where is it located and are the hard to replace

I have a delonghi oil heater that seems to be leaking oil ~ is that normal? And is there somewhere to refill it?

Its a new unit installed this march, gas company turned off gas for a month. Now gas company turn gas on. Now heater or ac not wrking. When switch to fan on, fan comes on but when unit is switch to heat or ac, no air comes out, nothing happends. Any suggestion or advise ? Thank your in...

My heater start working fine , the flame comes on, the fan runs well and blows hot air, then when the flame cames off, the fan continues to running blowing cold air and the never stop, blowing cold aiir the rest of the time? I changed the fan and the capacitor, Is it a heat sensor? What can be the...

I am going round in circles. I found out I must be addicted to porn after I tried to give it up but found it really difficult. I regret spending so much time on it, so I decide not to look at it anymore. But doesn't take me long to persuade myself there's nothing wrong with it and start again...