Tempstar Low Pressure Switch for TCH924GKA100 — OEM 1184655 | Ships Today
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Overview
This genuine OEM low-pressure switch (part number 1184655) protects the compressor on the Tempstar TCH924GKA100 heat pump from running on lost or low refrigerant charge. The switch monitors suction-side pressure and opens the 24V control circuit if pressure drops below a safe threshold, shutting the compressor down before it can run dry and overheat. It is a critical safety device — a compressor allowed to operate under a low charge will lose lubrication and fail expensively. When this switch sticks open, the system locks out and won't cool; when it fails closed, it no longer protects the compressor. Replacing the OEM switch restores both proper operation and the unit's built-in compressor protection.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1184655 |
| Type | Low Pressure Cutout Switch |
| Brand | Tempstar (ICP / Heil) |
| Function | Suction-side low-charge protection |
| Control Voltage | 24 VAC circuit |
| Fits Model | TCH924GKA100 |
Compatibility
Built as the factory replacement for the Tempstar TCH924GKA100 heat pump. This low-pressure switch is a common service part across ICP-family heat pumps and air conditioners sold under the Heil, Comfortmaker, and Tempstar brands. Confirm the part number and connection fitting against your original before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker. Verify zero voltage with a multimeter at the control terminals.
- Access — Remove the condenser service panel to expose the refrigerant line and pressure switch.
- Document — Photograph the 24V wire connections before disconnecting.
- Remove — Disconnect the leads and unthread the switch from its Schrader-style fitting; most switches use a self-sealing port so recovery is not required.
- Install — Thread on the new switch, snug to spec, and reconnect the leads per your photo.
- Test — Restore power, call for cooling, and confirm the switch is closed and the compressor runs at normal pressures.
Signs You Need a Replacement
- Compressor locks out and the system won't cool despite a good charge.
- Switch stays open or reads open ohms at normal operating pressure.
- Nuisance trips or short-cycling on the low-pressure circuit.
- Compressor runs even on a known low charge (switch failed closed).
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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