The Wacker Neuson Pressure Switch is a genuine OEM component designed for the HI 400HD G Indirect Air Heater. Sourced directly from Wacker Neuson, this part matches the original specification installed at the factory, ensuring a correct, reliable fit. If your HI 400HD G is failing to ignite, cycling incorrectly, or throwing a fault related to combustion air pressure, replacing the Pressure Switch is a straightforward, targeted fix.
Key Features
- OEM-Calibrated Switching Threshold — Manufactured to the exact pressure set point required by the HI 400HD G burner control system, so the heater responds accurately to real operating conditions.
- Direct Drop-In Replacement — Matches the original mounting configuration and electrical connector of the factory-installed switch, allowing straightforward installation without adapters or modifications.
- Confirmed Fitment for HI 400HD G — Verified for the HI 400HD G Indirect Air Heater, so you can order with confidence knowing this is the correct part for your machine.
- Protects Burner Operation — A correctly functioning pressure switch confirms adequate combustion airflow before allowing ignition, keeping the heater running efficiently through demanding heating cycles.
- Electrical Safety Assurance — As a control-circuit safety component, using a genuine OEM switch ensures the correct contact rating and response characteristics, helping prevent unsafe ignition attempts under low-airflow conditions.
A pressure switch on an indirect air heater monitors airflow from the combustion blower and signals the control board that safe operating conditions exist before allowing the burner to ignite. If the switch fails — either staying open when it should close, or failing to open when airflow drops — the heater will either refuse to start or, in the case of a stuck-closed switch, may attempt ignition under unsafe conditions. Replacing a faulty pressure switch restores proper communication between the blower and control board, keeping the ignition sequence operating as intended.
Part Details
| Part Number | 5200011966 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
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.
