Aquametro Oil & Marine CONTOIL DFM 20S, Mounting And Operating Instructions

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19 CONTOIL
®
DFM
Description of the Error Messages
In any case, if an error occured look at the Error Log to define what exactly happened and at what time.
To check the installation is also a recommended approach for finding faults.
The following messages will be displayed if an error occurs:
S>0 &R=0
Supply line flow meter has a flow rate. Return line flow meter has no flow rate.
Possible causes:
• Leak on the return line before it enters the flow meter.
• Was the connection on the return line unscrewed? Why? Set it tight.
• Check for loose connections of wires.
• Return Line flow meter blocked.
S=0 & R>0
Supply line flow meter has no flow rate. Return line flow meter has a flow rate.
Possible causes:
• Leak on the supply line before it enters the flow meter.
• Was the connection on the return line unscrewed? Why? Set it tight.
• Check for loose connections of wires.
• Supply Line flow meter blocked.
S>0 & R>0 & S<R
Supply line flow meter has a flow rate. Return line flow meter has a flow rate. But the Supply line flow meter flow rate is smaller than Return
Line flow meter flow rate.
Possible causes:
• Leak on the supply line before it enter the flow meter.
• Was the connection on the supply line unscrewed? Why? Set it tight.
• Check the temperature difference between the 2 lines. Remember: 10 °C of temperature difference mean an volume increase of 0.8 %.
• Check for loose connections of wires.
• Supply Line flow meter blocked.
S<0
Supply line flow meter has no flow rate.
Possible causes:
• Leak on the supply line before it enters the flow meter.
• Was the connection on the supply line unscrewed? Why? Set it tight.
• Check for loose connections of wires.
• Supply Line flow meter blocked.
R<0
Return line flow meter has no flow rate.
Possible causes:
• Leak on the return line before it enters the flow meter.
• Was the connection on the return line unscrewed? Why? Set it tight.
• Check for loose connections of wires.
• Return Line flow meter blocked.
If you have no success in finding out the reason of the fault, please call your local supplier.