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Troubleshooting

Decoders

Rain Bird

®

 

Decoders

Decoders are a cost-effective alternative to traditional in-field controllers. 
Installed underground and featuring simple, low-cost wiring, decoders are 
an aesthetically pleasing and economical option for reliable, in-field control. 
Installation requires up to 80 percent less wire than conventional controller 
systems. Electronic components are completely encapsulated to protect 
against the elements. And system expansion is easy: simply splice into the 
communication line to add additional decoders.

Learn more about this simple, reliable technology and how to service it in 
the following topics:

•  General Information
•  No Control Over Field Decoders
•  Shorted Wire Path
•  Suspected Broken Wire Path
•  Suspected Ground Fault

1

Summary of Contents for FD-101

Page 1: ...llation requires up to 80 percent less wire than conventional controller systems Electronic components are completely encapsulated to protect against the elements And system expansion is easy simply s...

Page 2: ...mine the total calculated current draw of the wire path 3 To calculate the static current draw of an entire interface add up all calculated wire path current draws that are connected to the interface...

Page 3: ...d wire path with short condition LED will be solid when shorted wire path is activated Disconnect field wires and recheck voltage Reconnect field wire Compare expected and actual at rest current draw...

Page 4: ...ION DETAILS Large and small Decoder Interface Locating a bad decoder using a Clamp meter SENSOR 1 e g Rain Sensor SENSOR 2 Not Shown e g Alarm Sensor To System Ground Connect to 24 VAC transformer Dur...

Page 5: ...t Run ON OFF Test in Decoder Diagnostics to Validate System Operation Repeat to narrow down location of wire path short Choose point halfway between measurement point and end of wire path Break critic...

Page 6: ...determine exact location of broken wire or partial connection Bad Splice Turn on first wire path Compare expected actual at rest current draw to expected current draw in Decoder Diagnostic window in c...

Page 7: ...fy at rest current draw matches expected current draw Run ON OFF test to validate system operation At LDI disconnect wire with lower draw and choose point halfway to end of wire path Measure draw in c...

Page 8: ...Corporation 6991 East Southpoint Road Tucson AZ 85756 U S A Phone 800 984 2255 520 741 6100 Fax 520 741 6522 Email rbgolf rainbird com Technical Service and Support 800 RAINBIRD U S and Canada only R...

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