The Wacker Neuson Control Box is a genuine OEM component designed for the HI 300D Indirect Diesel Heater. Sourced directly from Wacker Neuson, this part meets the same specifications as the original unit installed at the factory. If your HI 300D is showing control or ignition faults, or the existing control box has failed, this is the correct direct replacement to restore full operation.
Key Features
- OEM-Matched Electrical Specification — Manufactured to the same output and switching specs as the original, ensuring correct ignition sequencing and burner control on the HI 300D.
- Drop-In Wiring Compatibility — Connects directly to the existing wiring harness using the original connector layout, so installation follows the standard service procedure without adapters.
- Confirmed Fitment for the HI 300D Series — Verified for the HI 300D Indirect Diesel Heater (part number 5200021261), eliminating guesswork when ordering.
- Restores Full Burner Sequencing — A functioning control box manages ignition, fuel delivery timing, and safety shutoff cycles; a faulty unit can cause no-heat faults, failed starts, or uncontrolled shutdown.
- Electrical Safety Compliance — As the primary control and safety-shutoff interface on a diesel-fired heater, using a genuine OEM unit ensures all protective cutout functions operate within the designed parameters.
The control box is the central electronic brain of the indirect diesel heater, managing the ignition sequence, fuel valve timing, airflow monitoring, and safety shutoff functions. It continuously monitors operating conditions and triggers automatic cutoff if unsafe conditions — such as flame-out or overtemperature — are detected. When the control box fails, the heater will typically refuse to start, cycle off unexpectedly, or display fault codes, leaving the unit unable to deliver heat until the component is replaced.
Part Details
| Part Number | 5200021261 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Control Box |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
