Thanks! I didn't realize the codes could be deleted because I never went down to that next level in the Workshop menu....I think the error memory is preventing the heater from starting.
Workshop -> Error Memory
- Select [Read] by turning the operating button and confirm by pressing.
- Read out the fault message and remedy the fault.
- Then select [Delete] by turning the operating button.
- Delete the fault list by pressing the operating button.
Now the heater spins up and behaves normally except for no heat.
Edit: I checked the fuel pump and it's making the single initiation click, but doesn't continue clicking to pump fuel.