Tempstar Pressure Switch Kit (Hi/Lo) for TSH524HKA200 — OEM 1184656 & 1184655 | Ships Today
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Overview
This OEM pressure switch set protects your Tempstar TSH524HKA200 refrigerant circuit from damaging pressure extremes. The kit includes the high-pressure switch (OEM 1184656) and the low-pressure switch (OEM 1184655). The high-pressure switch opens the control circuit if discharge pressure climbs to unsafe levels — commonly from a dirty condenser coil, failed condenser fan, or overcharge. The low-pressure switch opens on loss of charge or restricted flow to keep the compressor from running in a vacuum. When either switch fails or trips, the system typically won't start, short-cycles, or locks out on a fault. Replacing both with genuine ICP/Heil/Tempstar parts restores reliable safety operation at the factory cut-in/cut-out set points.
Specifications
| Spec | Value |
|---|---|
| High Pressure Switch | OEM 1184656 |
| Low Pressure Switch | OEM 1184655 |
| Type | Auto-reset refrigerant pressure switch |
| Brand | Tempstar (ICP / Heil) |
| Circuit | 24V control / safety lockout |
| Fit | OEM factory replacement |
Compatibility
Engineered as a direct factory replacement for the Tempstar TSH524HKA200 heat pump. The same 1184656 / 1184655 switches are shared across many ICP, Heil, and Comfortmaker units built on this platform — verify your existing part number before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control/service panel to reach the refrigerant lines and switch leads.
- Document — Photograph all wiring before disconnecting anything.
- Remove — Disconnect the spade terminals and unthread the failed switch from its Schrader-style port; expect minimal refrigerant loss on self-sealing fittings.
- Install — Thread on the new switch, snug to spec, and reconnect the leads per your photo.
- Test — Restore power and confirm the unit starts and holds without tripping on a pressure fault.
Signs You Need a Replacement
- Unit locks out or won't start on a high- or low-pressure fault
- Short-cycling that clears when the switch is jumped (diagnostic only)
- Visible corrosion, cracked housing, or burnt terminals
- Switch fails a continuity/set-point test against spec
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