HVACopedia

All brands · Electrical troubleshooting

No heat — line-voltage stat

What is going on

Possible causes and checks for: no heat — line-voltage stat.

Likely causes

  • Check breaker
  • Pull stat, meter set above expected range
  • Line voltage across open terminals → stat bad, replace with line-voltage type (open breaker, verify dead first)
  • No voltage → wiring/electrician. p.993 [967]

More electrical guides

Related

Calculators and reference tables

Take it to the job

All guides, error codes and tips work offline in the HVACopedia app.

Open the app

Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.