Davies Craig LCD EWP/FAN DIGITAL - CONTROLLER DIAGNOSTIC CHART

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CONTROLLER DIAGNOSTIC CHART
Condition Troubleshooting
Controller does not operate / No display
• Blown fuse
• Check all the wire connections
12V voltage indicator flashing
• Controller receiving low voltage <
10.5V
• Controller receiving high voltage >
17.5V
24V voltage indicator flashing
• Controller receiving low voltage <
21.5V
• Controller receiving high voltage >
27.5V
Sensor open circuit
• Check sensor wiring for any open
circuits
Sensor short circuit
• Check sensor wiring for any short
circuits
Low Temp
<40°C (104°F) after 5 Minutes
• Check engine temperature
Above Set Temperature
• Sensor temperature is at least 10°C
(18°F) above the set temperature.
Pump Error
• Check pump wiring for open/short
circuits
Override ON
• EWP manually override by the user.
• To turn OFF, Press & hold the set
button for 5 to 7 seconds or switch
OFF & ON the IGN.
ERR • Temp sensor Open or Short circuit