Tempstar Low Pressure Switch for TCH960GKA100 — 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 TCH960GKA100 system. The switch continuously monitors refrigerant pressure on the low side of the sealed system and opens the control circuit if pressure drops below a safe threshold — protecting the compressor from running on a low charge, a blocked metering device, or a loss of refrigerant. When this switch fails or trips, the unit will not start a cooling or heat-pump cycle. A failed low pressure switch is one of the most common causes of intermittent no-cool calls, short cycling, and lockout faults 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 TCH960GKA100 and many other ICP-family units (Tempstar, Heil, Comfortmaker, Arcoaire) that share this control platform. Always verify the printed part number on your existing switch matches 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 all wire connections before disconnecting anything.
- Remove — Disconnect the two switch 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 verify 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 call from the thermostat.
- Unit short cycles or locks out with a low-pressure fault code.
- Switch contacts stay open with 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