Electric Water Pump and Fan Digital Controller

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The EWP®/Fan Digital Controller has two specific functions:

  • Will manage the operation of the EWP® by varying the speed of the pump in response to the coolant temperature
  • Manage control of your electric engine fan.

The Controller has a push-button to lock in any temperature from 40°C (104°F) to 110°C (230°F). It’s recommended you set the Controller to closely match your engine’s existing thermostat temperature.

Controller Operation

When the ignition is turned on the Digital Controller will (after a self check to endure all is in working order) begin to pulse coolant around the system with the pump on for 10 seconds and then off for 30 seconds. Once the engine has warmed to within 20°C of your set temperature the controller will increase the frequency of the pulsing so the pump runs for 10 seconds and then is off for 10 seconds. This continues until the engine temperature is within 5°C of your set temp.

At this point the pump switches to continuously pumping and the flow rate varies to ensure the engine temp is stable. Once the Coolant reaches the set temp the pump then runs at full speed (Please see diagram below).

The Controller also manages the vehicles electric fan automatically, once the engine has reached +3°C above your set temperature it operates the fan.

Another significant benefit is that the Controller allows the EWP® & Fan to run on after ignition shutdown for either 3 minutes or until the coolant is 10°C below the set temperature to eliminate heat soak. As a failsafe, if the controller does not receive information telling it the coolant has attained a temperature of 40°C after 5 minutes, it goes into alarm mode (pump runs continuously at full speed). This ensures that the engine is protected against a sensor fault.

Digital Controller Operation Curve

8002 Operation
  • The Controller MUST be mounted inside the passenger compartment to minimise its ambient temperature and exposure to water
  • Ensure the unit is mounted allowing easy access to the set button and to minimise exposure to direct sunlight.
  • The Controller has 2 solid mounting options and Velcro to assist your installation.
    • U-Bracket – ideal for under dash mounting
    • Mounting plate – Ideal for mounting to dash or custom brackets

Installation Videos

Operating voltage 3V DC to 15V DC
 Maximum current 7.5A @ 13V
Flow rate (max) 80 L/min (21.13 US gal/min) @ 13V DC
Operating temp. -40° to 130°C (-40° to 266°F)
Pump design Clockwise centrifugal with volute chamber
Pump weight 900 grams (2.0 lb)
Pump material Nylon 66, 30% glass-filled
Burst pressure 350 kPa (50 psi)
Seal Ceramic face seal
Self Priming No, none of our pumps are self-priming
Fits hose size 32mm to 51mm (1⅜” to 2”)