Tempstar Pressure Switch Kit (HI & LO) for TSH530HKA100 — 24V Heat Pump | Ships Today

Overview

This is a genuine OEM high-pressure and low-pressure switch set for the Tempstar TSH530HKA100 heat pump. These 24V refrigerant pressure switches protect the compressor by opening the control circuit when system pressure rises too high (high-pressure switch, OEM 1184656) or drops too low (low-pressure switch, OEM 1184655). When a switch fails, the unit may short-cycle, refuse to start, or lock out on a safety fault. Replacing both switches as a pair restores reliable compressor protection and prevents nuisance trips.

Specifications

Compatibility

Engineered for the Tempstar TSH530HKA100 heat pump and shared ICP/Heil/Comfortmaker platforms using the same chassis. Always confirm the part numbers stamped on your existing switches before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
2. Access — Remove the service panel to expose the refrigerant lines and control wiring.
3. Document — Photograph all wire connections before disconnecting.
4. Remove — Recover or isolate refrigerant as required, then unthread the Schrader-style or brazed switch and disconnect its leads.
5. Install — Mount the new switch, torque the fitting, and reconnect the leads per your photo.
6. Test — Restore power and verify the compressor runs and the safeties hold under normal pressures.

Signs You Need a Replacement

• Compressor locks out or trips on a high- or low-pressure fault.
• Unit short-cycles or will not start in heat or cool mode.
• Switch contacts fail to close even at normal operating pressure.
• Visible corrosion, refrigerant leak, or damaged terminals at the switch body.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.