10
Troubleshooting
1. "Power" LED off:
Check main power circuit breakers. Check to see if the Aqua Solar power is con-
nected 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 "De-
sired 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 fil-
tered 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:
On continuously indicates a probable open circuit in the "POOL" sensor or wiring.
Flashing indicates a probable short circuit in the "POOL" sensor or wiring. In either
case digital pool temperature display will show as "PErr". The solar heating and
cooling functions will remain off until this problem is fixed, however, the recirculate
freeze protection (if enabled by the jumper) will still operate properly. Use the chart
on
