Self Repair Tips
Fix It First & Save
Before scheduling a service visit, review these troubleshooting steps for common solar pool heating issues. Many problems can be identified or resolved quickly, potentially saving you time and money.
Leaks & Water Loss
Small Leaks
Contact our service department at (707) 319-5705 to schedule an inspection and repair.
Large Leaks
- Turn off pool circulation.
- Wait approximately 30 minutes.
- Turn off the solar control or manual solar valve.
- Close all solar isolation valves.
- Turn pool circulation back on.
- Contact Sun Marshall and inform us of the actions taken.
Solar System Not Heating
- Verify that all solar isolation valves are fully open.
- Confirm the solar controller is set to AUTO and the temperature setting is properly adjusted.
- If your pool uses an automation system, review the control panel settings for solar operation.
- Check for warning lights, alerts, or error indicators.
- Verify filter pressure increases when solar is activated (typically 7–11 PSI on cartridge filters).
- If equipped with a solar booster pump, verify it is operating correctly.
- Confirm the valve actuator is not in the OFF position.
- Reduce usage of waterfalls, fountains, and water features as they cool pool water.
- Compare morning and afternoon pool temperatures to verify solar gain.
- Ensure baskets and filters are clean and pool water is at the proper level.
Pool Equipment Problems
If the issue does not change when solar is turned ON or OFF, the problem is unlikely related to the solar system itself.
If a technician determines the issue is not solar-related, standard service charges may apply even if no repairs are performed.
Air Bubbles at Pool Return Jets
Air bubbles are typically caused by one of the following conditions:
- Insufficient Water Flow: Water is returning from the roof faster than it is being supplied. This may indicate a failing pump, low water level, or inadequate variable-speed pump settings.
- Roof Solar Leak: Due to pressure imbalance, a leak in the roof-mounted solar system may draw air into the plumbing instead of releasing water.
- Suction Side Leak: Air may be entering through plumbing between the pump and pool, or through a damaged pump basket or lid seal.
To isolate the issue, turn the solar system OFF. If the bubbles remain, the solar loop is likely not the source of the problem.