Fafco
Manifold Union or Gasket Leak
Water leaks at the equipment pad around the Fafco solar manifold when solar is on.
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Possible Causes
Loose union on Fafco solar manifold, Flattened or missing union O-ring, Cracked manifold body, Over-tightened fitting causing stress crack
How to Fix / Troubleshooting
Safety: Turn off pump and relieve pressure before loosening unions.
- Identify leak point: Dry the area and run the system briefly to see exactly where water emerges.
- Tighten unions: Hand-tighten the leaking union, then add a small additional turn with a strap wrench if needed. Do not overtighten.
- Inspect O-rings: If tightening fails, open the union and inspect the O-ring. Replace if flattened, cracked, or missing.
- Check for cracks: Examine the manifold body for hairline cracks. Replace the manifold if damaged.
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Repair Difficulty
Easy
2/5
Required Part
Fafco Solar Manifold O-Ring Kit
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