AC Workhorse Pumps

Support resources for AC WorkHorse pumps including manuals, installation guides, troubleshooting steps, and answers to common questions.

• Q: What is the warranty policy for my pump and cable?
• Q: How should I mount the inverter for proper cooling?
• Q: What is the process to change the AC output direction?
• Q: How do I adjust the maximum motor current settings?
• Q: Why is my pump showing (AC Out PH) or Phase Lost?
• Q: How do I test if the inverter output is healthy?
• Q: How do I configure settings for an AC Input (grid or generator backup)?
• Q: Why does my pump stop working with an Overload OFF(AC out O-A) error?
• Q: How do I slow down the pump/decrease frequency (Hz)? - How to reduce water flow?
• Q: How high should I hang my submersible pump in the bore?
• Q: Can I open the inverter box while it is powered?
• Q: How do I stop my pump from turning on and off constantly (cycling)?
• Q: Why does my pump stop and show "OFF (Tank)" or "Off (Borehole)”?
• Q: What do I do if the screen displays "OFF (AC Out S-C)" or "E: AC Out Short-C" (Error E4)?
• Q: Why isn't my screen turning on with Solar wired in?
• Q: How do I wire a single-phase 3-wire motor if I don’t know the colours?
• Q: Why is my pump running but the water flow is very small or has low pressure?
• How To Adjust & Install A Differential Pressure Switch On A Solar Pump
• AC Workhorse Pumps FAQ's and Troubleshooting