Tempstar Pressure Switch Set Hi/Lo for TSH460GKA101 — Heat Pump | Ships Today
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Overview
This OEM high/low pressure switch set protects the compressor on your Tempstar TSH460GKA101 heat pump by monitoring refrigerant pressure and opening the control circuit before damaging conditions occur. The high-pressure switch (1184656) trips on excessive discharge pressure from a dirty condenser, failed fan, or overcharge; the low-pressure switch (1184655) trips on loss of charge or restricted flow. When a switch fails or sticks open, the unit will lock out and refuse to run, often with no obvious mechanical fault. Symptoms include a compressor that won't start, intermittent lockouts on hot or cold days, or a control board flashing a pressure fault code. These switches are built to original specification with matching trip thresholds and connections.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1184656 (Pressure Switch Hi), 1184655 (Pressure Switch Lo) |
| Type | High & Low Refrigerant Pressure Switch Set |
| Brand | Tempstar (ICP / Heil) |
| Function | Compressor Safety / Lockout Protection |
| Application | Heat Pump, AC Compressor Circuit |
| Fitment | OEM Direct Replacement |
Compatibility
Fits the Tempstar TSH460GKA101 heat pump and other ICP-family units (Heil, Comfortmaker, Arcoaire) that use the 1184656 high and 1184655 low pressure switches. Verify thread/connection style and trip ratings against your existing switches.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
- Access — Remove the condenser service panel to reach the switches on the refrigerant lines.
- Document — Photograph the wiring at each switch and note hi vs. lo line locations.
- Remove — Disconnect leads, then unscrew the old switch from its Schrader-style port (capture any minor refrigerant loss per EPA practice).
- Install — Thread on the new switch, reconnect the leads per your photo, and confirm the port seals.
- Test — Restore power and start the unit; confirm normal pressures and that no lockout fault is reported.
Signs You Need a Replacement
- Compressor locks out and will not start despite normal charge.
- Intermittent shutdowns flagged as high- or low-pressure faults.
- Switch reads open on the ohmmeter at normal operating pressure.
- Control board displays a recurring pressure-switch error code.
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