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Lennox 31J96 SPST M/R Rollout Switch 320°F

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Special Price $54.39 Regular Price $62.55
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SKU
31J96
The Lennox 31J96 320F Rollout Switch is an essential safety device used in different HVAC equipment such as furnaces and air handlers. Being an SPST switch, it has one input and one output terminal; the switch can either be opened or closed. Built into the design is a temperature sensor that is set at 320°F. If the temperature around the switch rises beyond this level, which may be a sign of an overheating condition, the switch turns off the HVAC unit. These safety measures are useful to ensure that the equipment does not sustain any loss and help to eliminate causalities besides fire outbreaks.
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HVAC Controls, Air Conditioner Switch
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Specifications

  • Measure: Units
  • Type of Product: Rollout Switch
  • Temperature: 320°F
  • Type: Manual Reset
  • Weight: 0.04lbs
  • Connection Type: SPST
Manufacturer Name: Lennox
Product Number: 31J96
OEM Part Number: 31J96
Product Description: 320F M/R Spst Rollout Switch
Weight:0.04lbs/18.14g

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Product Questions (2)
Customer Questions
What maintenance is required for the Lennox 31J96 Rollout Switch?

Inspect mounting and wiring for corrosion or looseness. Ensure proper burner flame rollout conditions are addressed and ventilation pathways remain clear. Replace the switch if tripped or damaged and avoid bypassing this safety device.

What are common issues with the Lennox 31J96 Rollout Switch?

  • Premature tripping due to overheating conditions.
  • Cracked ceramic or thermal fatigue failure.
  • Wiring or connector failure.
  • Nuisance shutdown from airflow restriction.
  • Switch stuck open avoiding ignition.
  • Corrosion at terminals.
  • Intermittent electrical contact issues.

Installation Steps

Step 1: Turn off electrical and gas supply, confirm no voltage at switch terminals.

Step 2: Remove access panel to reach rollout switch near burner.

Step 3: Label and disconnect wires carefully.

Step 4: Remove old switch and mount new switch securely.

Step 5: Reconnect wiring per diagram.

Step 6: Refit panel restore power test ignition and shutdown response.