AEM 30-3305 V2 Water Methanol Multi Input Controller Kit - Manual (Page 3)

Page 3
Fuse
The controller has an externally accessible fuse. The controller itself will turn on and function,
but the pump will not run without the fuse. If the controller is reporting an open circuit it may be
that the fuse has blown, and or is not installed correctly. Use a 15 amp fast blow fuse for
replacement purposes.
“Test” Button
The Test button feature is available to test the systems functionality. This feature should be
used ONLY with the nozzle disconnected from the engine. This is to prevent unintentional
pumping of fluid into the engine. To operate the test button press and hold. The pump speed
will gradually increase from zero to full speed over 3 seconds, and then remain full for another 3
seconds before stopping. Flow should begin gradually and then hold at full pressure for a total
test time of 6 seconds.
Short circuit self-diagnostics
There are two modes of pump-driver short circuit protection available. One can detect a short at
any time but produces a slight buzzing in the pump. This should not be noticeable under most
conditions, but can be turned off if it is objectionable. If turned off, a short circuit can only be
detected when the pump is running.
To enable or disable this diagnostic (and the buzzing): Press and hold the
“Test” button while
applying power to the controller. The change is acknowledged by a single long flash of the
status LED output and the external LED. Once the button is released the controller will continue
to function normally. You can also tell what mode has been selected by listening for the buzzing
sound in the pump. Repeating this operation will toggle between the two modes.