PDS33 Series
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Chapter 5 Diagnostics and Troubleshooting
The PDS33 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 “Err” symbol corresponds to the error code for the offending
condition.
5.1 Fault Codes
Fault
code
Fault description
Possible causes
Remedy
Err02
Over-current during
acceleration
Too fast acceleration
Increase acceleration time
Too low input voltage
Check the input power
supply or wiring
Lower-rating controller
Replace with higher-rating
controller
Err03
Over-current during
deceleration
Too-fast deceleration
Increase deceleration time
Too-heavy and large-inertia load Add proper braking units
Err04
Over-current at
constant running
speed
Sudden change of load
Check the load
Too low input voltage
Check the input power
supply or wiring
