Tempstar Low Pressure Switch for TCH948GKA200 — OEM 1184655 | Ships Today
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Overview
This genuine OEM low pressure switch (part #1184655) is a critical safety control for the Tempstar TCH948GKA200 system. The switch monitors refrigerant pressure on the low side of the sealed system and opens the 24V control circuit when pressure falls below a safe threshold — protecting the compressor from running on a low charge, a restricted metering device, or a refrigerant leak. When this switch trips or fails, the unit will not start a cooling or heat-pump cycle. A faulty low pressure switch is a leading cause of intermittent no-cool calls, short cycling, and control lockouts on Tempstar, Heil, and ICP equipment.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1184655 |
| Description | Pressure Switch, Low Side (LO) |
| Type | Low Pressure / Loss-of-Charge |
| Brand | Tempstar (ICP / Heil) |
| Control Circuit | 24V |
| Function | Compressor low-pressure protection |
Compatibility
Directly fits the Tempstar TCH948GKA200 and many other ICP-family units (Tempstar, Heil, Comfortmaker, Arcoaire) sharing this control platform. Always verify the printed part number on your existing switch reads 1184655 before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, and verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the unit service/access panel to expose the refrigerant lines and control wiring.
- Document — Take a photo of both switch lead connections before disconnecting.
- Remove — Disconnect the two leads. The switch threads onto a Schrader-style fitting; recover or pump down only if required, then unthread the old switch.
- Install — Thread on the new 1184655 switch, snug to spec, and reconnect the leads per your photo.
- Test — Restore power and confirm the system completes a normal cycle without a low-pressure lockout.
Signs You Need a Replacement
- System will not start in cooling or heat-pump mode despite a thermostat call.
- Unit short cycles or locks out with a low-pressure fault code.
- Switch contacts remain open at normal refrigerant pressure (confirm with a meter).
- Visible corrosion, cracking, or a leaking 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