ICP Definite Purpose Contactor for RHS243H0CA0AAAA – 24V Coil, 2/3-Pole 30-60A | Ships Today
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Overview
This OEM definite purpose contactor is the magnetic switch that energizes the compressor and condenser fan motor in your ICP / Heil / Tempstar RHS243H0CA0AAAA heat pump. When the thermostat calls for cooling or heating, the 24-volt control coil pulls the contactor's silver-cadmium contacts closed, delivering line voltage to the compressor. Three OEM options are available for this model: a 2-pole 30A (P/N 1171554), a 3-pole 40A (P/N 1172449), and a 3-pole 60A (P/N 1183374). Contactors are a high-wear component — the contacts arc and pit every time they cycle, eventually welding shut or burning open. Typical failure symptoms include a unit that won't start, chattering or buzzing at the contactor, a compressor that runs continuously even with the thermostat off, or visibly pitted and blackened contact points.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1171554 / 1172449 / 1183374 |
| Type | Definite Purpose Contactor |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Coil Voltage | 24 VAC |
| Poles | 2-Pole & 3-Pole |
| Current Rating | 30A / 40A / 60A |
| Fitment | RHS243H0CA0AAAA |
Compatibility
Directly fits the ICP / Heil / Tempstar RHS243H0CA0AAAA heat pump and shares the same contactor platform used across many ICP-family condensing units. Confirm your existing contactor's pole count, amp rating, and 24V coil before ordering so the replacement matches your wiring.
Installation Guide
- Safety First – Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
- Access – Remove the condenser service panel to expose the control compartment.
- Document – Photograph all line and 24V coil wires before disconnecting.
- Remove – Transfer wires one at a time, or label them, then unscrew the old contactor from the bracket.
- Install – Mount the new contactor, reconnect line voltage to L1/L2 (and L3 if 3-pole) and the 24V coil per your photo.
- Test – Restore power, call for cooling, and confirm smooth pull-in with no chatter.
Signs You Need a Replacement
- Pitted, burned, or welded contact points
- Loud humming, buzzing, or chattering when energized
- Compressor won't start or won't shut off
- Coil reads open on the multimeter (no continuity)
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