Weil-McLain
Electrical Overload or Short Circuit
Weil-McLain water heater trips the electrical breaker or blows fuses when it attempts to start.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted circulator motor, Shorted igniter, Damaged wiring harness, Internal control short
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a breaker that trips immediately. Risk of fire or shock exists.
- Identify when it trips: Note whether the breaker trips immediately on power-up or only when the burner or pump starts. This helps locate the faulty component.
- Inspect wiring: With power off, check for burned, pinched, or bare wires around the circulator, igniter, and control.
- Isolate components (advanced): A technician can disconnect suspect loads (pump, igniter) one at a time to see when the breaker holds, identifying the shorted part.
- Replace failed parts: Shorted motors or igniters must be replaced with Weil-McLain approved components.
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Repair Difficulty
Professional Required
5/5
Required Part
System Circulator Pump
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