Tempstar High Pressure Switch for TCA724GKA100 — Refrigerant Safety Limit | Ships Today
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Overview
This OEM high pressure switch (part number 1184656) is a refrigerant-side safety control on your Tempstar TCA724GKA100 unit. It monitors discharge-line pressure and opens the low-voltage control circuit if pressure climbs to an unsafe level, shutting the compressor down to prevent damage. High-pressure trips are commonly triggered by a dirty condenser coil, a failed condenser fan, an overcharge, or a restriction — but the switch itself can also fail open, stick closed, or drift out of calibration, causing nuisance lockouts or, worse, defeating the safety entirely.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1184656 |
| Type | High Pressure Limit Switch (auto-reset) |
| Brand | Tempstar |
| Function | Refrigerant safety cutout |
| Circuit | 24V control (normally closed) |
| Fit | OEM |
Compatibility
Specified for the Tempstar TCA724GKA100 condensing unit and shared across many ICP-family outdoor units sold under the Tempstar, Heil, Comfortmaker, and Carrier/Bryant ICP labels. Because pressure-switch trip points and fittings vary, confirm the part number against your existing switch before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the service panel to reach the switch on the refrigerant line.
- Document — Photograph the wire connections and switch orientation before disconnecting.
- Remove — Disconnect the leads; switches on a Schrader-style port can be changed without recovering charge, otherwise have refrigerant recovered first.
- Install — Thread the new switch onto its port (do not overtighten), then reconnect the control leads per your photo.
- Test — Restore power, run the system, and verify normal operation with no nuisance trip.
Signs You Need a Replacement
- Compressor locks out on high-pressure with a clean coil and working fan.
- Switch reads open on a meter at normal idle pressure.
- Intermittent or nuisance safety trips on cooling calls.
- Switch never opens even under a known high-pressure condition.
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