Chapter 5 Diagnostics and Troubleshooting
The PDS23 solar pump controller will attempt to drive the pump to deliver water
even under adverse conditions. To ensure years of reliable service, it must also
protect the system components from conditions that might result in equipment
damage. When adverse conditions arise, the controller will continue to deliver as
much water as possible at reduced output if necessary, and will shut down only in
extreme cases. Full operation will resume automatically whenever abnormal
conditions subside.
If the controller has stopped to indicate a fault code on the display, the associated
time-out delay will vary depending on the nature of the fault. The number following
the “E” symbol corresponds to the error code for the offending condition.
5.1 Fault Codes
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