Tempstar Low Pressure Switch for TCH624GKA100 — 24V Refrigerant Safety | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM low-pressure switch (part number 1184655) is the refrigerant-side safety control for the Tempstar TCH624GKA100. Wired in series with the 24V control circuit, it continuously monitors suction-line pressure and opens the circuit to shut the compressor down if pressure drops below a safe threshold — protecting against a loss of charge, a clogged metering device, or frozen evaporator conditions. A low-pressure switch that fails open will prevent the system from running, while one that sticks closed removes critical compressor protection. Installing a fresh OEM switch restores proper low-charge protection and reliable cooling/heat-pump operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1184655 |
| Type | Low Pressure Switch (Refrigerant Safety Cutout) |
| Brand | Tempstar (ICP / Heil) |
| Circuit Voltage | 24 VAC |
| Function | Opens 24V control circuit on low suction pressure |
Compatibility
Designed for the Tempstar TCH624GKA100 heat pump and used across ICP-family outdoor units (Heil, Comfortmaker, Tempstar) sharing the same refrigerant-circuit safety design. Verify the connection style and refrigerant type of your existing switch before installing.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
- Access — Remove the condenser service panel to reach the refrigerant lines and control wiring.
- Document — Photograph the wiring and switch location before disconnecting.
- Remove — Disconnect the two control leads, then unthread the switch from its Schrader-style port (most ports are self-sealing; recover charge if required).
- Install — Thread in the new switch, snug to spec, and reconnect the control leads per your photo.
- Test — Restore power and confirm the system starts and the switch holds the circuit closed under normal pressure.
Signs You Need a Replacement
- Compressor will not start even with a proper refrigerant charge.
- System short-cycles or nuisance-trips on the low-pressure circuit.
- Switch fails to open during an actual low-charge condition.
- Corroded terminals or a cracked switch body.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days