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Lennox 58C97 SPST Heat Sequencer Relay

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Special Price $64.29 Regular Price $73.93
In stock
SKU
58C97
The Lennox 58C97 Heat Sequencer Relay is a small device measuring ½ Inch and is used in Lennox HVAC systems. It controls the on/off power to various heating elements to complete the heating stages based on signals from the thermostat. This SPST relay has one input and one output and is powered by low voltage 24V. It is compatible with electrical frequency of 50Hz and 60 Hz. The Lennox Heat Sequencer Relay determines the convenience and energy usage of your heating system by activating the heating stages methodically.
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HVAC Controls & Electrical, Relays, SPST Relays
Manufacturer:
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Specifications

  • Size: 1/2 Inch
  • Connection Type: SPST
  • Voltage: 24V
  • Measure: Unit
  • Type: Sequencer
  • Core Product: No
  • Frequency: 50/60Hz
  • Weight: 0.21 Lbs
Manufacturer Name: Lennox
Product Number: 58C97
OEM Part Number: 58C97
Product Description: Spst Heat Seq Relay
Weight:0.21lbs/95.25g

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Product Questions (2)
Customer Questions
What maintenance is required for the Lennox 58C97 Heat Sequencer Relay?

Inspect wiring connections periodically and ensure terminals are tight to prevent overheating. Keep the relay free from dust and debris to maintain accurate switching. Check for signs of arcing or corrosion and replace if faulty.

What are common issues with the Lennox 58C97 Heat Sequencer Relay?

  • Contact wear causing intermittent heating.
  • Coil failure preventing proper switching.
  • Stuck relay contacts leading to continuous heat.
  • Overheating due to electrical overload.
  • Timing delay inconsistencies affecting operation.
  • Burnt terminals from poor connections.

Installation Steps

Step 1: Turn off electrical power to HVAC system and confirm no voltage for safety.

Step 2: Remove access panel and locate old sequencer relay inside control compartment.

Step 3: Disconnect wiring carefully, labeling each terminal before removal.

Step 4: Mount new relay in same position and reconnect terminals per wiring diagram.

Step 5: Restore power and test heating cycle for proper staged operation and timing response.