Hurricane SCH25, Service And Troubleshooting Manual

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Page 27
2. Clean the flame sensor hole using high pressure air.
3. Screw the flame sensor (clockwise) into the fuel block.
4. Connect the flame sensor wires to the connectors with
matching YELLOW heat-shrink.
5. Screw the front cover back in place.
6. Connect the main 12VDC power to the heater.
7. Attempt to run the heater.
IF NO:
1. Replace the flame sensor. To replace the flame sensor,
refer to 5.3.4.
2. Attempt to run the heater. Proceed to Q3.
Q3: Did the new flame sensor allow the heater to continue running after
7 seconds?
IF YES:
Problem solved.
IF NO:
Contact Calcutt Boats for further assistance.
The heater sputters intermittently and eventually flames out.
The sputtering effect is due to air in the fuel system. When the burner
chamber is hot, this sputtering effect can cause the heater to backfire.
Intermittent sputtering is commonly caused by leaks in the fuel line. To
check the fuel line, do the following:
1.
Turn off the fuel supply to the heater before proceeding with the next
step.
2. Remove the fuel line from the fuel inlet of the heater and replace it
with a short piece of fuel line. Secure this line with a hose clamp.
3. Put a fuel filter on the other end of the fuel line and place the end in a
jerry can filled with diesel fuel.
4. Attempt to run the heater.
5. There will be air in this new fuel line. It may be necessary to restart
the heater to bleed the air from the fuel line.
6. Proceed to Q1.
Q1: Does the heater continue to sputter after the jerry can is put in
place?
IF YES:
If the fuel block was taken out or the fuel solenoid replaced,
then the fuel line from the outlet of the fuel regulator to the