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ClimateMaster 39B0017N02 High Pressure Switch 300/240 PSI

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Special Price $35.49 Regular Price $46.14
In stock
SKU
39B0017N02
The ClimateMaster 39B0017N02 High Pressure Switch is a safety and efficiency part used in HVAC systems. This switch is used to monitor refrigerant pressure and the operation of the system to guarantee it runs under a reset pressure of 300 PSI and a cut-off pressure of 240 PSI. It is used in air conditioners and heat pumps to safeguard the compressor from possible harm, and shuts it down if pressures are above certain levels. Benefits include higher system reliability, lower probability of thermal failure, and higher energy use, which leads to reduced operating costs and longer equipment life.
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HVAC Controls & Electrical, Switches, Pressure Switches
Manufacturer:
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Specifications

  • Type: High Pressure Switch
  • Reset Pressure: 300 PSI
  • Cut-Off Pressure: 240 PSI
Manufacturer Name: ClimateMaster
Product Number: 39B0017N02
OEM Part Number: 39B0017N02
Product Description: 300/240# High Pressure Switch
Weight:0.18lbs/81.65g

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Product Questions (2)
Customer Questions
What maintenance is required for the ClimateMaster 39B0017N02 High Pressure Switch?

Inspect the ClimateMaster high-pressure switch for corrosion or loose connections. Clean terminals and verify secure wiring to ensure proper pressure cutoff. Schedule periodic system inspection and handle carefully to avoid electrical hazards during service.

What are common issues with the ClimateMaster 39B0017N02 High Pressure Switch?

  • False high-pressure trips causing compressor shutdowns.
  • Worn or stuck contacts leading to intermittent operation.
  • Wiring or terminal connection failures under vibration.
  • Inaccurate pressure sensing due to internal degradation.
  • Complete switch failure or no response.

Installation Steps

Step 1: Turn off all electrical power and unplug the HVAC system.

Step 2: Recover refrigerant if service access requires opening the pressure line.

Step 3: Remove access panel and locate existing old high-pressure switch on discharge line.

Step 4: Disconnect electrical terminals and carefully remove the sensing connection.

Step 5: Install new switch in same orientation and reconnect wiring securely.

Step 6: Restore power, test system, and check proper cut-out and reset operation.