Page 4813.4 Optional Ozone Water Maintenance SystemIf you have elected to have your spa equipped with the optional JacuzziCD Ozone water purification system you will find that your water staysfresh and clear with significantly less chemical sanitizer usage. You willalso probably be able to go longer between complete spa draining.14.0 Troubleshooting - Display MessagesThere are a number of unique functions designed into your Jacuzzi spato protect it from damage and/or to aid in troubleshooting. Following is alisting of all the possible messages along with their meanings:MESSAGE MEANINGOverheat Protection (Heater is deactivated, filter/circulation pump is activated). Water temperatureis above acceptable limits. Do not enter the water!Remove spa cover to speed cooling. See “Water IsToo Hot” on page 52. If condition persists, contactyour dealer or authorized service center.If the spa water is more than 20°F cooler than thetemperature set point, jets pump #1 and heater willautomatically activate to provide freeze protection.The spa will stay in this mode until the water tem-perature reaches 15 degrees below the set temper-ature. No corrective action is necessary.FLOW SWITCH (Heater is deactivated. The filter/cir-culation may also be deactivated). Proper flow ofwater is inhibited or a flow switch has malfunc-tioned. Check for proper water level and for cloggedfilter (page 41-42). Contact your dealer or serviceorganization.*NOTE: THIS MESSAGE CAN ALSO APPEAR IFTHE PUMP HAS NOT REGAINED PRIME AFTERTHE SPA HAS BEEN DRAINED AND REFILLED.IF YOU SUSPECT THAT THIS IS THE CASE, SEETHE INSTRUCTIONS ON PAGE 51 UNDER “PUMPDOES NOT OPERATE BUT ICON DOES”