Led Display; Temp Led (Green); Pwr Led (Amber); Ewp Led (Green) - Davies Craig EWP-FAN Installation Instructions Manual

LED DISPLAY:

The following identifies each LED and its operational status:

TEMP LED (GREEN):

FLASHING 75ºC LED = Sensor temperature is below 75ºC.
ON

PWR LED (AMBER):

ON = The controller has power.

EWP LED (GREEN):

FLASHING = EWP operating in „pulsing‟ mode – Refer Figure 5, areas
ON = Electric Water Pump (EWP
FAN LED (GREEN):
TEST LED (RED):
ON = System warning has been triggered. Therefore, refer to "Diagnostic Chart" in order to determine
possible cause, and take measures to correct the problem.
REMOTE TEST LIGHT (RED):
This light will "flash" whenever the TEST LED is on. The purpose of this light is to provide remote indication
when the TEST LED has been activated.
OVER-RUN MODE:
During "Over-Run" mode:
SETTING THE EWP
The Digital Controller can be set in accordance with your requirements. The factory „set-point‟ on the
controller is 85°C. This setting can be changed by using the „set-point‟ adjustment button on the control panel
as follows:
Pushing the „SET‟ button once will indicate the present setting with an amber LED.
i.
When „SET‟ button is held down, the „set-point‟ settings will be scrolled through. Button should be
ii.
released when desired „set-point‟ is reached.
The LED will then flash and the setting must be confirmed („locked in‟) by holding button down for 2
iii.
sec. If setting is not confirmed within 5 sec, controller will revert to previous setting.
To check „SET‟ point, see (i) above.
iv.
It is recommended that initially the „set-point‟ be set to approximately the mechanical thermostat opening
temperature. Use a lower „set-point‟ to run the engine colder or a higher „set-point‟ to run the engine hotter.
Generally, running the engine slightly colder will increase the power and running the engine slightly hotter
will improve the fuel efficiency.
To verify „SET‟ temperature, run the engine and monitor existing engine temperature gauge.
NB: For your convenience, brief operating instructions are available on the reverse side of the
controller.
= ACTUAL sensor temperature.
®
) running between 6V – Battery Voltage: Refer Figure 5, area
ON= Fan operating
- Actual sensor temperature will be indicated by
- PWR LED will flash
- EWP LED will be solid and pump will run at full battery voltage.
- FAN LED will be solid and Fan will run until temperature below the target
temp.
®
& FAN DIGITAL CONTROLLER
A & B .
GREEN temperature LED.
C .
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