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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
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Summary of Contents for Rain Bird FD-101
- Page 1 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.
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Page 2: General Information
Blue WIRe LDI or SDI interface. • 100 FD-101 x 0.5 mA = 50 mA • FD-101 = 0.5 mA • 25 FD-202 x 1.0 mA = 25 mA • FD-102 = 0.5 mA • 10 FD-401 and FD-601 = 10 mA... - Page 3 Recommended Rain Bird ® Troubleshooting Procedure for “No Control Over Field Decoders” Symptoms: No control over field decoders and zeros in course log. START Check switch and incoming Verify Power LED is on power at 120VAC. OKAY OKAY Confirm System Status is OK Check incoming 24VAC.
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Page 4: Installation Details
Troubleshooting Decoders INSTAllATION DeTAIlS (LARGE AND SmALL DECODER INTERFACE) Use one or two screws at the top and one at the bottom, depending on support. CAUTION Mains- and system-ground are not internally connected and must be separated to provide the best protection against surges. - Page 5 Recommended Rain Bird ® Troubleshooting Procedure for “Shorted Wire Path” Symptoms: No Decoder Operation on Wire Path or LDI. Field LED may be solid or faint. START Go To Troubleshooting Card: “No Control Over Turn off all LDI field wire path...
- Page 6 Recommended Rain Bird ® Troubleshooting Procedure for “Suspected Broken Wire Path” Symptoms: Zeros in course log. No response on parts of wire path or partial connection (Bad Splice). START Open Decoder Diagnostics Compare stations and areas that in central control software.
- Page 7 Recommended Rain Bird ® Troubleshooting Procedure for “Suspected Ground Fault” (Leakage to Ground) Symptoms: Lower run times or zeros in the course log. Fluctuating current reported in Decoder Diagnostics. No START clean alternating color in Field LED on LDI/SDI. Severity of Ground Fault...
- Page 8 • p r o d u c t s At Rain Bird, we believe it is our responsibility to develop products and technologies that use water efficiently. Our commitment also extends to education, training and services for our industry and our communities.