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Rheem · Furnace troubleshooting

Inducer (draft motor) does not start on heat call

What is going on

R95P: no inducer on a heat call.

Likely causes

  • No 24 V on W
  • Limit circuit open
  • Inducer or capacitor failed
  • Wiring IFC to inducer

Check in this order

  1. Set fan to AUTO and call for heat (set point more than 10 F above room).
  2. Check 24 V on W at the IFC; if none, check thermostat mode, battery, wires.
  3. Check for an open limit or limit circuit.
  4. Check line voltage at the inducer and on the IFC inducer pins.
  5. Check wires/connections IFC to inducer and inducer capacitor (90+).
  6. Check IFC last - most failures are not the IFC.

Applies to: Rheem/Ruud (-)95P series 95% single-stage condensing gas furnace (R95PA)

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Source: Rheem R95P Installation Instructions (ManualsLib 989115), Figure 49 IFC Troubleshooting Guide, p.96 (PDF p.100). 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.