20 Most Recent Jandy Aqualink Rs4 One Touch Control System Control System - Page 4 Questions & Answers

Do you mean your heater is saying water sensor open? Or your control?
Whichever one it is , simply replace the sensor, if it's the system giving you this msg the. Find a probe with a bandclamp on your plumbing and replace it .

If it's the heater giving the code then depending on what type heater you have, the temp sensor is located around the header area

change spa side switch

push button below auto service and time out 1 time to put it in auto

Here is a link to the manual for the RS4.

make sure wire isnt shorted

check breaker then check the relay for that aux

check for cut or exposed wires to controller or see if 4 pin pug is connected and tight

bad water sensor check it hooks up to plumbing after pump wire goes to green plug in aqualink pins 5 and 6

check to see if pump is primed make sure all valves open going to pool make sure filters are clean

water temp sensor on system is connected to the pipe coming from the pump outlet goes to numbers 5 and 6 on long plug on Bezel board if temp sensor is bad on heater it goes into the header where plumbing connects to heater

go to system setup go to program if there is a program it will let you edit or delete

go into system setup assign the solar to a aux it should work

if it loses time and date when turning off power needs new battery in aqualink 9 volt old style round nickel cadium on back of PCB board on new models

go into set up system assign aux 2 to what you want it to do