1. 521. Support: Balboa topside displays OH or OHS
   105
   Balboa topside displays “OH" or "OHS” *One of the Water Temp Sensors has detected 110°F (43.3°C) for the incoming Water Temperature and Spa Functions are Disabled. System will Auto Reset when Water Temp is below 108°F (42.2°C). Check for Extended Pump Operation or High Ambient ...
2. 522. Support: Balboa topside displaying LF
   103
   Fault has occurred 5 times in the Last 24 Hours or Less, and Heating has been Disabled. There is Not Enough Water Flow through the Heater to carry the Heat Away from the Heating Element. After the Problem has been Resolved, you Must Press Any Button to Reset and Restart Heater Start Up. Check ...
3. 523. Support: Balboa topside displaying HFL or HL
   96
   Sensors are indicating a Possible Low Flow Condition. There may Not be Enough Water Flow through the Heater to carry the Heat Away from the Heating Element. Heater Start Up will begin again after about 1 Min. Check for Water Level, Flow Restrictions, Closed Valves, Air Bubbles, and Pump ...
4. 524. Support: Balboa topside displaying Pr
   98
   The Spa has just been powered up and is in Priming Mode for 4 Minutes. Pumps and Blower can be turned ON and OFF to Remove any Air from the Heater. No Automatic Functions will turn ON during this time, and the Heater will Not Start. This is Not an Error Message. Wait 4 Minutes or Press any Temp ...
5. 525. Support: Balboa topside displaying Ice or Ic
   101
   A Potential Freeze Condition has been Detected, and "Ic/Ice" in the System is being Prevented. 44°F (6.7°C) or Lower has been Detected at the Lowest Temp Sensor, or the Aux Freeze Switch has Closed, and All Pumps and Blower are Activated. All Pumps and Blower are ON for at least 4 Minutes ...
6. 526. Support: Balboa topside displaying ---F
   123
   The Actual Water Temperature is "Unknown". Priming Mode has been Exited and the Pump has Not yet run for 1 or 2 Minutes (depending on Model) to Sample Actual Water Temperature. With the Heat Related Pump Running, wait at Least 2 Minutes for the Correct Actual Water Temperature to be Displayed.
7. 527. Support: Balboa topside displaying St or Std
   104
   The Spa is Operating in the "Standard" Heating Mode. Between Filter Cycles, the Water Temperature is Sampled every 30 Minutes. The Heater and Pump will Operate Any time the Thermostat Demands Heat. The Water Temperature is Always maintained within 1°F (.5°C) of Set Temperature. Other Heating ...
8. 528. Support: Balboa topside displaying Ec or Ecn
   107
   If the Ecn or Ec Message is Alternating with the Water Temperature on the Display, the Spa is Operating in the Economy Heating Mode. If the Ecn or Ec Message is ON Solid (Not Flashing) on the Display, the Spa is Operating in the Economy Heating Mode, but there is No current water temperature ...
9. 529. Support: Balboa topside displaying SL or SLP
   101
   If the "SLP" or "SL" Message is Alternating with the Water Temperature on the Topside Display, the Spa is Operating in the "Sleep Heating Mode". This is NOT an error message. Note that a Sleep Heating Mode will drop the water temperature 20 degrees below the set temperature. Please see the ...
10. 530. Support: Balboa Controller VS500Z and VS501Z Mode Settings for Standard, Economy and Sleep.
    103
    Mode is changed by pressing the Temp or Set button, and then pressing the Light button. If there are UP and DOWN buttons, use the UP button. Do not press the buttons at the same time. It's one button, release, and then the other button. Standard Mode (St) is programmed to maintain the ...