Water leaking from around the top or side of a Gledhill cylinder

Safety: Isolate electrical power immediately if water is leaking near electrical components. Turn off the cold water supply to the cylinder to limit leakage.

Steps:

• Identify source: Dry the area and observe carefully to pinpoint the exact origin of the leak (fitting, boss, seam, etc.).
• Tighten fittings: For minor weeps at compression joints, gently tighten the nut by a small amount. Do not overtighten, as this can damage the fitting.
• Immersion gasket: If water is seeping around the immersion heater, the gasket may have failed. Drain the cylinder to below the immersion level, remove the element, fit a new gasket, and refit.
• Shell leaks: If water appears to be coming through the cylinder body or welded seams, the cylinder is likely beyond repair and must be replaced.

Important: Do not operate the heater with an active leak. Water ingress can damage the PCB and create an electric shock risk.