ICP Control Board for RGS150LDAA0AAAA — OEM Kit 1183618 | Ships Today
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Overview
The ICP control board kit (OEM part 1183618) is the integrated furnace control (IFC) that manages ignition sequencing, blower timing, gas valve operation, and safety lockouts for your ICP/Tempstar/Heil RGS150LDAA0AAAA gas furnace. It is the central electronic brain of the unit: it reads the thermostat call, energizes the inducer, verifies pressure-switch closure, fires the igniter, opens the gas valve, and proves flame before staging the blower. When this board fails, the furnace typically will not start, locks out after a few ignition attempts, or short-cycles unpredictably. Common failure symptoms include a furnace that hums but never ignites, a blinking diagnostic LED indicating a control fault, no response to a thermostat call, or relays that chatter. This factory kit includes the board and the mounting/wiring hardware needed for a direct replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Function | Ignition, blower, gas valve & safety control |
| Fitment | OEM direct replacement |
Compatibility
Engineered for the ICP / Tempstar / Heil model RGS150LDAA0AAAA gas furnace and its sister units that originally shipped with control board 1183618. Always confirm the part number printed on your existing board before ordering, as ICP used several board revisions across this platform.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace control/blower compartment service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting anything.
- Remove — Unplug the harness connectors and low-voltage terminals, then unscrew the failed board from its standoffs.
- Install — Mount the new board, transfer each connector to the matching terminal per your photos, and confirm DIP switch settings match the original.
- Test — Restore power, initiate a heat call, and confirm a full ignition sequence and proper blower operation.
Signs You Need a Replacement
- Furnace will not respond to a thermostat heat call.
- Repeated ignition lockouts or a hard-lockout diagnostic LED code.
- Blower or inducer relays chatter, stick, or fail to energize.
- Visible burn marks, scorched traces, or a cracked board.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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