Common Electric Furnace Problems & Troubleshooting

Common Electric Furnace Problems and Solutions

  1. No heat
  2. Intermittent or insufficient heat

No heat

Possible CauseProcedure
Circuit breaker tripped or fuse blownReplace fuse or reset breaker
Wires broken or terminal connectors loose or faultyInspect furnace wiring and install new connectors if necessary
Tighten wire connections
Wires burned (look for burned paint on furnace housing)Inspect wiring and replace wires if necessary
If problem persists, have electrician check for aluminum wiring and replace it
Control or heating circuit breaker or fuse faultyReplace fuse or reset breaker
Transformer faultyTest transformer and replace it if necessary
Limit controls faultyIdentify faulty element circuit, test limit control, and replace it if necessary
Heating elements burned out due to dirty air filterReplace air filter, identify faulty element circuits, test heating elements, and replace if necessary
Heating elements faultyIdentify faulty element circuits, test heating elements, and replace if necessary
Heat relay faultyCall for service
Sequencer relay faultyCall for service
Back to content

Intermittent or insufficient heat

Possible CauseProcedure
Wire connections looseInspect furnace wiring, tighten connections, or replace loose wire connectors
Wires burned (look for burned paint on furnace housing)Inspect wiring and replace wires if necessary
If problem persists, have electrician check for aluminum wiring and replace it
Thermostat anticipator not adjusted for electric furnaceAdjust thermostat anticipator
Old-style thermostat does not have anticipatorHave thermostat replaced
Limit control faultyIdentify faulty element circuit, test limit control, and replace it if necessary
Heating elements faultyIdentify faulty element circuits, test heating elements, and replace if necessary
Sequencer relay faultyCall for service
Back to content

Leave a Comment

Call for a Quote