Dettson Electrical Overload / Short Circuit

Boiler frequently trips the household circuit breaker or blows fuses

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.

Possible Causes

Shorted circulator motor, Shorted Dettson fan motor, Damaged wiring harness, Faulty control transformer

Safety: Repeated breaker tripping indicates a serious electrical fault. Turn off the breaker and do not reset repeatedly.

Visual inspection: Look for obvious signs of short circuits: melted insulation, burn marks, or pinched wires.
Isolate components (technician): A professional can disconnect loads (pump, fan, gas valve) one at a time to identify which component is causing the overload.
Replace faulty part: Once identified, the defective Dettson motor or transformer must be replaced with an OEM-rated component.

Professional Required 5/5

Dettson control transformer

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