Pentair ETI 400 HLS Error

Welcome to TFP.

Does the heater fire and run and heat?

When does it throw the HLS error?
 
Test the HLS sensor with a multimeter and see if it is open.
 
Show me pics of your heater and where you jumpered the HLS sensor.
 
How old is your heater?

What is the manufacturing date on the label on the heater?

Is it under warranty?
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.