Poly - Thread Finder
All this information is out in other threads. I am repeating. A search can be your friend.Guys I need guidence too.
It appears I have no timer or wiring for a timer that may have been removed.
The basic Espar heaters are a small self contained oil burner furnace as to firing. The heaters can be installed stand alone in boats and vehicles. The little furnace has a built in control module for the ignition, blower speed, flame monitoring, operating temperature control, and overtemp safety monitor.
To just fire up the Espar furnace needs a fuel supply (pulse pump), combustion air (internal fan), and an ignition source (glow pin).
The basic external requirements to fire up are:
Constant 12 volts to pin #1.
A proper negative ground connection pin #2.
A connection (wire) out to the dosing pump pin #4 (It is a conditioned pump signal. Not just 12 VDC.).
A 12 volt enable signal to pin #6.
A 12 volt enable signal to pin #7.
Pin #5 is for communication. It is not required.
The circulation pump is not required for the heater to fire up. The Espar control has no idea what the MB aux electric coolant pump is doing, or not doing until the heater go to over-temperature. Without proper coolant circulation the Espar heater will shut down on overtemp safety in a short time.
The Espar heater does run through an internal system check before firing. If there is a problem with the glow pin, flame sensor, blower, etc, then that will prevent the Espar heater from getting to startup.
Here is a basic diagram.
Added: As Vanski pointed out, the Espar coolant type heaters can even be test fired with no coolant. I wouldn't allow it to run for more than a very short time without coolant though. It will very quickly over heat and stress components.