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This OEM control board kit (part 1183618) is the brain of your ICP, Heil, or Tempstar RGS214HDCU4BAAA furnace. The integrated furnace control manages the entire heat sequence — it reads the thermostat, runs the inducer and pressure-switch proving, energizes the igniter and gas valve, times the blower on/off delays, and monitors flame and safety limits. It also flashes diagnostic fault codes through its onboard LED. A failed board produces erratic behavior: no response to the thermostat, blower or inducer that won't start, parts cycling out of sequence, or a furnace that locks out and flashes an error code.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board (Kit) |
| Brand | ICP / Heil / Tempstar |
| Control Voltage | 24V |
| Features | Ignition sequencing, blower timing, diagnostics LED |
| Fits Model | RGS214HDCU4BAAA |
Direct fit for the ICP/Tempstar/Heil RGS214HDCU4BAAA and shared-platform Comfortmaker furnaces using this OEM control kit. Verify the board layout, connector positions, and any onboard jumper/dip settings against your original.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.