Hayward Aqua Solar® Aqua Solar - Page 4

Aqua Solar Digital Solar Control System The Aqua Solar Digital Solar Control System is a differential temperature control for solar heating of pools, spas, and hot tubs. The Aqua Solar is available in 3 models; AQ-SOL-LV, AQ-SOL-LV-TC and AQ-SOL-LV-SP. These models provide differential temperature control with an adjustable calibrated water temperature high limit. Both offer a built-in digital display for solar, water, and ambient temperature information as well as programmable set point temperature. Automatic nocturnal cooling (for pools that overheat in hot climates) and recirculate freeze protection functions can be enabled/disabled via internal jumpers. The AQ-SOL-LV-TC additionally provides a filter pump time clock, programmable in 15-minute intervals with multiple ON/OFF times. The AQ-SOL-LV-SP model provides a solar priority function-one of the optional high voltage relays can be used to remove power from the conventional heater whenever solar heating is available. This maximizes the heat contribution from solar. Front panel indicator LED's also provide immediate feedback of system state such as heating, cooling, and sensor fault. Specifications Power: 105-130VAC, .5A 50/60Hz. or 195-250VAC, .3A 50/60Hz Valve Output: 24VAC, 20VA, .85A max. Industry standard 3 pin connector Relay Outputs: DPST isolated contacts; 3HP@240V, 1.5HP@120V, booster pump, pool sweep interlock, or filter pump; 1 relay supplied with AQSOL-LV-TC, maximum of 2; order relays separately (part no. AQRELAY); relays are industry standard Sensors: 2 required for "SOLAR" and "POOL" temperatures; 3rd sensor ("AUX") is optional-for display and/or recirculate freeze protection; (all sensors are thermistor type, 10K@25ºC/77ºF, additional freeze snap switches may be wired in series with the "AUX" sensor when used for recirculate freeze protection) Field Selectable options C/F Temperature display in Celsius or Fahrenheit (factory default) Cooling Enables or disables (factory default) operation to cool the pool Recirc. Frz. Enables or disables (factory default) recirculate freeze protection Solar Override Enables or disables (factory default) override of the filter pump relay when solar heat is available. Control Logic Heat diff.: 4ºF on, 1.5ºF off High Limit: 70-104ºF calibrated scale Recirc. freeze: On when AUX sensor less than or equal to 34ºF Off when AUX sensor greater than or equal to 36ºF Cool diff.: -8ºF on, -3ºF off 1 Troubleshooting 1. "Power" LED off: Check main power circuit breakers. Check to see if the Aqua Solar power is connected to the LOAD side of the filter pump timer, in which case the Aqua Solar will only be on when the filter pump is on. Lastly, check the internal fuse which is located on the right upper side of the main circuit board. If necessary, replace the fuse with a type 3AG, 2 amp, slo-blo fuse, which is available in most electrical or electronics stores. 2. "Heating" LED is always on: Check that the switch is in the "AUTO" position. Check the sensor temperatures: The "Heating" LED should go off if the pool temperature is less than the "Desired Temperature" OR if the solar temperature is less than the pool temperature. If the sensors appear to giving incorrect readings, check the sensors using the temperature/ resistance/voltage chart on the back cover. 3. "Heating" LED never comes on: Verify that the switch is in the "AUTO" position. Check the sensor temperatures: The "Heating" LED should turn on when the pool temperature is less than the "Desired Temperature" AND the solar temperature is warmer than the pool temperature. The exception is when solar override is being used (typically when the pool is filtered at night, but the solar override function is used to turn the filter pump on during the day when solar heat is available): In this case, there is a 2 hour minimum off time to prevent rapid on/off cycling of the filter pump. If the sensors appear to giving incorrect readings, check the sensors using the temperature/resistance/voltage chart on the back cover. 4. "Heating" and "Cooling" LEDs on simultaneously This indicates that the main switch is in the "ON" position. The Aqua Solar will operate the solar valve and the booster pump (if installed) regardless of the sensor temperatures. Set the switch back to "AUTO" to resume normal operation. 5. "Heating" and "Cooling" LEDs flashing simultaneously This indicates that recirculate freeze protection is active (solar valve on, boost pump on (if used), and filter pump on) due to the "AUX" sensor being less than 35ºF OR the "AUX" sensor being disconnected OR any freeze snap switches wired in series with the "AUX" sensor being open. If the "AUX" sensor is not connected OR a freeze snap switch is open, the "AUX" temperature display will be " LO ". The Aqua Solar will continue this operating mode until the "AUX" sensor rises above 35ºF AND all freeze snap switches wired in series with the "AUX" sensor are closed. This function operates regardless of the position of the "ON / AUTO / OFF" switch. 6. "Pool Sensor" LED on or flashing "Err" on the pool temperature display: 10