TUZIGUAIGUAI Replacement PCB for MaxxAir/Maxxfan Deluxe RV Vents — Fits 7000K–8900K, Restores Fan & Motor Control

This TUZIGUAIGUAI replacement printed circuit board restores electronics for Maxxfan MaxxAir Deluxe RV roof vents compatible with a long list of MaxxAir/Maxxfan models.

If your RV vent stopped responding, stalls, or behaves unpredictably, swapping the PCB often brings the vent back to reliable operation without replacing the whole unit. This replacement board is designed to match the original electrical connectors, mounting points, and control functions used across many Maxxfan/MaxxAir Deluxe series roof vent models.

Which Maxxfan/MaxxAir models will this board fit?

This circuit board is cross-referenced to numerous factory part numbers and model codes used in MaxxAir Deluxe vents. It covers both older and recent revisions so you can match it to the listed model codes on your vent or in the vent manual.

• Fits model groups: 7000K through 8900K series and 4500/4800 series variants.
• Compatible with OEM part numbers like 10-21275K, 10-21275K-V3.8, V3.9 and related KE variants.
• Works with SKU ranges beginning 00-07xxx, 00-08xxx, 00-04xxx for Deluxe vents.

How do I know this PCB will plug into my existing vent?

Before buying, inspect the connector layout, screw hole positions, and label information inside your vent. This TUZIGUAIGUAI board was made to match the original form factor and terminal arrangement used in many MaxxAir Deluxe boards.

• Compare connector types and pin counts visually to your old board.
• Check that mounting hole spacing aligns with your vent chassis.
• Confirm the model code on your vent matches one of the listed compatible numbers.

What functions does the replacement board restore?

The board provides the control logic for fan speeds, vent motor operation, and accessory circuits used by the Deluxe series. Replacing it restores the electronic control layer while leaving mechanical parts intact.

• Restores multi-speed fan controls and motor actuation signals.
• Sends proper signals to limit switches and position sensors.
• Supports the same external controls and remote interfaces as the original board.

Is installation difficult and what tools are needed?

Installation is straightforward for anyone comfortable with basic RV electrical work and removing the vent cover. Turn off power, document wiring orientation, swap the board, and reassemble; no soldering required if connectors match exactly.

• Common tools: screwdriver set, socket or nut driver, and flashlight.
• Turn off RV 12V supply before starting to avoid shorts or damage.
• Photograph wiring and connector positions to ensure correct reassembly.

Who this is for: This replacement PCB is intended for RV owners, repair technicians, and DIYers who want to fix a malfunctioning Maxxfan/MaxxAir Deluxe roof vent without replacing the entire vent assembly. It’s ideal when the mechanics (fan blades, motor, lid) are sound but the control electronics have failed, offering a cost-effective route to restore full vent functionality.