Waste Oil Heater Forum - Your definitive source for burning waste oil for heat.

Do you double check all your pump wiring connections to make sure they are good ? This might be related to the pump motor not kicking in.

Also check the condition of the yellow quick disconnect cord ends.

Is the green power light on ?
Is there power to the fan limit switch and you can turn on the fan ?

I would not give up yet, since you already have it installed and so far it has just been little things, no big money items yet.

Sounds like the motor is going bad. The motor and pump are 2 separate components that can purchased separately. The motor is a very common oil burner motor that is easily found many places and for usually under $ 100.

Yes, you can have small pockets of air all through out the system where the gauge reads ok sometimes and sometimes not. Air is a very big PITA.

If you are going to change the motor that would be a good time to replumb it since you have to take it all apart. 

The first thing I would look at is the pump coupler. Sometimes one of the set screws will loosen up and it will not always spin the pump shaft. 

Has the reset ever popped on the pump motor ?

Looks like it started nice and easy. Hopefully when it acts up you will be standing there and see what happens.

That heater burns about 2 gallons per hour so if you keep track of hours on the meter you just take that number x 2. It will give you a close estimate.

That is what I like to hear. I think the best part about it is no money was spent to get to this point.

The 3/4 pipe and street L you can get at Home Depot/Lowes. The swivel and hex nipple you can get at a place that does hydraulic hoses. Black pipe and black pipe only for the stand pipe. For the pressure side I like to use 3/8" nylon like what semi trucks use for air lines and quick connect push in fittings.

The cad cell is measured in Ohms. The brighter the flame the lower the ohms. Hook your meter up where the 2 yellow wires connect at the primary control with heater off take note of reading, fire up heater and take note of reading. While the heater is running watch the meter while adjusting oil pressure you will see the ohms change and that should give you an idea of how low of oil pressure you can have before it shuts off.