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ZZ3F06824
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41-3669 High Pressure Sensor Switch for Thermo King Spectrum SL SB SLXi SLX SLXe
$72.89
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
High Pressure Sensor Switch for Thermo King Spectrum SL SB SLXi SLX SLXe
This high pressure sensor switch is a direct replacement component designed for Thermo King refrigeration units, monitoring refrigerant pressure to protect the system from over-pressure conditions. It serves as a critical safeguard, ensuring the unit operates within safe parameters and preventing compressor damage. This sensor switch is engineered for Thermo King Spectrum SL, SB, SLXi, SLX, and SLXe models, supporting reliable performance in transport refrigeration.
Overview
This high pressure sensor switch is a vital safety component for Thermo King Spectrum SL, SB, SLXi, SLX, and SLXe refrigeration units, designed to monitor refrigerant pressure and signal the control system to prevent operation outside safe limits. It acts as a protective measure, helping to avoid compressor failure and system downtime caused by excessive pressure. The switch is built to meet the demanding conditions of transport refrigeration, providing accurate pressure readings and dependable switching action.
Built For Performance
- Precision-engineered to match the electrical and pressure specifications of the original Thermo King component
- Rugged housing designed to withstand the vibration and temperature extremes found in mobile refrigeration applications
- Sealed electrical connector helps prevent moisture ingress and corrosion for consistent signal transmission
- Factory-tested for accurate pressure threshold activation to ensure reliable system protection
- Direct replacement design for straightforward installation on compatible Thermo King units
Fits These Machines
- for Thermo King Spectrum SL
- for Thermo King Spectrum SB
- for Thermo King Spectrum SLXi
- for Thermo King Spectrum SLX
- for Thermo King Spectrum SLXe
On-The-Job Use
- Used in refrigerated truck and trailer units to monitor high-side refrigerant pressure during normal operation
- Activates safety shutdown protocols if pressure exceeds the set limit, preventing catastrophic compressor failure
- Provides essential input to the controller for managing condenser fan speed and other pressure-dependent functions
- Supports fleet maintenance teams in diagnosing and resolving high-pressure system faults efficiently
Specs At A Glance
| Part Number(s) | 41-3669 |
| Type | High Pressure Sensor Switch |
| Reference Number | 41-3669 |
Good To Know
Q: How do I know if this high pressure sensor switch is failing? A: Common signs include the refrigeration unit shutting down intermittently or running with reduced cooling capacity, often accompanied by a fault code related to high pressure. If the switch fails to open or close at the correct threshold, the system may not engage its safety mechanisms, leading to compressor damage.
Q: Can a faulty high pressure sensor switch cause other problems? A: Yes, a malfunctioning switch can cause the unit to continuously cycle off, preventing proper cooling and potentially leading to product temperature abuse. It can also cause the condenser fan to run constantly, wasting energy and increasing wear on fan components.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.