You can expect a Salt Chlorine Generator (SCG) cell to last 5 or more years if the pool and cell are maintained properly. Knowing when a Cell has gone bad and needs to be replaced is not always obvious. Before you replace the Cell, you will want to check several possible issues that can cause a good Cell to shut down or perform poorly. This guide reviews these issues at a general level since each SCG has unique functions. See your owner's manual for more specific trouble shooting instructions.