Tempstar Low Pressure Switch for TCH936GKA100 — OEM 1184655 | Ships Today
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Overview
This is a genuine OEM low-side pressure switch (part number 1184655) for the Tempstar TCH936GKA100 heat pump. The low pressure switch is a refrigerant safety control wired into the 24V control circuit. It continuously monitors suction-side refrigerant pressure and opens its contacts when pressure drops below a safe threshold — protecting the compressor from running under a low-charge or loss-of-charge condition that would otherwise cause overheating and mechanical failure. When this switch fails or trips, the system typically locks out, short cycles, or refuses to start the compressor. Installing the correct OEM switch restores proper safety protection and reliable operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1184655 |
| Type | Low Pressure Switch (refrigerant safety) |
| Brand | Tempstar (ICP / Heil family) |
| Circuit | 24V control circuit |
| Function | Loss-of-charge / low suction pressure cutout |
| Fit | OEM direct replacement |
Compatibility
Engineered as a direct-fit replacement for the Tempstar TCH936GKA100 heat pump. Because ICP, Tempstar, Heil, Comfortmaker and Arcoaire share a common parts platform, this switch also services many equivalent models across those brands. Always verify your existing part number (1184655) before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, and verify zero voltage with a multimeter.
- Access — Remove the service/control panel to reach the switch and refrigerant line connection.
- Document — Photograph the wire routing and terminal connections before disconnecting anything.
- Remove — Disconnect the two control wires, then unthread or unclip the switch from the refrigerant fitting (recover charge if the connection is brazed/Schrader-dependent per equipment design).
- Install — Mount the new switch, reconnect the control wires per your photo, and confirm a leak-free fitting.
- Test — Restore power and verify the unit starts, runs, and the safety closes under normal pressure.
Signs You Need a Replacement
- Compressor will not start or locks out on a safety fault
- System short cycles or trips on low pressure with a verified normal charge
- Switch fails a continuity test when refrigerant pressure is within range
- Visible corrosion, cracked housing, or damaged terminals
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