Turn off pump and Retro Jet.
Is there anything stuck in between the blades? Make sure not to stick anything in
between the blades to get it out. Use a high-pressure hose to clean out debris.
Check all connections and clean if necessary.
Check cell blades. If they are damaged, replace the cell.
Disconnect one end of the cell and power supply connections, so you only have one
side connected and one side disconnected. Do not leave the connections to power
supply together while waiting for error code for too long, it could damage the power
supply.
Turn back on pump and Retro Jet.
If you get error code 1 – Replace the cell.
If you get error code 2 - Replace the power supply.
To protect the other connections until replacement part arrives connect cell and
power supply back together correctly.