Replacement Circuit Board for a 4700 Model MaxxAir Roof Vent

Updated 06/28/2026 | Published 05/01/2022

Question:

Need replacement circuit board for MaxAir 10 speed exhaust only roof vent. It has 4700k_board_v1.6 written on the panel. Do you have the right board? 2018 Dynamax DX3 Thanks

asked by: Fred S

Expert Reply:

Yes! According to your provided numbers, you have the MaxxAir model 4700k. For that model, the part you need is the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan # MA10A21275K. This is the same as the MaxxAir replacement panel part 10C21275K.

I went ahead and attached the blueprints of the panel replacement spec sheets to show you verification.

expert reply by: Bob C

Control Board Specs for the MaxxAir Fan Model 4700K
(click to enlarge)

Kelly P.

4/25/2025

Been dealing with this situation and worried about ordering the wrong one. I have the 4700K but I cannot find the exact looking Board.

Jerred H.

5/7/2025

@KellyP Since you have a MaxxFan Plus 00-04700K fan, you'll need the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan item # MA10A21275K. Do you have any idea how old your fan is? This board is designed for the fans manufactured after 2010.

Joseph

6/28/2026

Hey Etrailer I have the same failing PCB control board from a 4700K fan. The replacement part you are suggesting has what looks like 2 rj45 connectors and my board has a 4 pin connector and a capacitor where these connections live on the new board. the actual part number on my board is 1627-2a please advise. Thank you Joseph