The Wacker Neuson Control Box is a genuine OEM component designed for the HI 300D, HI 300HD D, and HI 200HD D diesel indirect air heaters. As a direct factory replacement, it restores proper heater operation and ensures full compatibility with the original wiring harness and control circuitry on these machines. Sourced directly from Wacker Neuson, part number carries the same specifications as the unit installed at the factory, giving you confidence in both fit and function.
Key Features
- Genuine OEM Electrical Integrity — Manufactured to Wacker Neuson's exact circuit specifications, ensuring correct voltage regulation, switching logic, and signal output for these indirect-fired heater systems.
- Drop-In Replacement — Connects directly to the factory wiring harness on the HI 300D, HI 300HD D, and HI 200HD D with no adaptation or rewiring required.
- Broad HI-Series Compatibility — Confirmed fitment across HI 300D, HI 300HD D, and HI 200HD D diesel indirect air heater models, covering both standard and heavy-duty variants.
- Restores Full Heater Control — A functioning control box governs ignition sequencing, burner operation, and safety shutdowns; a failed unit can result in a heater that will not start, runs erratically, or fails to respond to temperature settings.
- Safety-Critical Component — The control box manages the safety interlock and shutdown logic on these diesel-fired heaters, making correct specification and reliable operation essential for safe use on the worksite.
The control box is the electronic brain of the indirect air heater, managing ignition sequencing, burner firing, airflow control, and protective shutdowns in response to temperature and fault conditions. It continuously monitors the heater's operating state and triggers automatic cutoffs if unsafe conditions are detected, such as overheating or flame failure. When the control box fails or degrades, the heater may refuse to start, cycle off unexpectedly, or lose the ability to regulate output temperature — all of which disrupt heating operations in cold-weather jobsite environments where consistent heat output is critical.
Part Details
| Part Number | 5000186784 |
|---|---|
| Old Part Number | 0186784 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Control Box |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 200HD D Indirect Air Heater | HI200HDD | 5000620916 |
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.
