Fits
ReefLED 90 (G1)
Part no.
R35172
Genuine part
Yes, genuine Red Sea
For
ReefLED 90 G1 only
Red Sea ReefLED 90 Electronic Board Top G1 Only
Genuine top electronic board for a G1 ReefLED 90 that's lost app control or gone unresponsive on the buttons. This is Red Sea's factory top board for the first-generation ReefLED 90, part number R35172. It carries the light's control electronics – Bluetooth and app connectivity, the on-unit button interface and display – separately from the lower board that drives the LEDs themselves. Fitting a genuine replacement resolves faults isolated to control and connectivity without replacing the whole fixture.
Key features
- Genuine Red Sea part – factory board, not a generic replacement, part number R35172.
- Control-side repair – targets Bluetooth/app connectivity, button response and display faults.
- Board-level fix – replaces the faulty electronics without a full light replacement.
Will it fit my light?
This board fits the first-generation (G1) ReefLED 90 only. Red Sea's later ReefLED G2 range – the G2 60, G2 115 and G2 170 – uses different electronics and does not take this board. A light labelled simply "ReefLED 90" with no "G2" on the case or in the app is the G1 unit this part is made for. Check the model label on the underside of the fixture if you're unsure.
Specifications
| Part name | ReefLED 90 top electronic board |
|---|---|
| Part number | R35172 |
| Fits | ReefLED 90, first generation (G1) only |
| Does not fit | ReefLED G2 60, G2 115, G2 170; ReefLED 50; ReefLED 160S |
| Companion part | ReefLED 90 bottom electronic board, sold separately |
| Sold as | Single board |
What's included
- 1 x ReefLED 90 top electronic board, genuine Red Sea part
Fitting
A board-level swap done with basic hand tools. Photograph connector positions before disconnecting the old board – the ribbon and power connectors are keyed but easy to mix up on reassembly.
Suitable for, and not suitable for
Suitable for a G1 ReefLED 90 with a confirmed control-board fault – no app connection, unresponsive buttons, or a blank or faulty display, with the LEDs still lighting normally. Not suitable for the G2 range, and not the right part if the fault is LED output itself rather than control.
Warranty and delivery
Covered by Red Sea's manufacturer warranty on genuine spare parts, in addition to your consumer guarantee rights under Australian Consumer Law. Standard parcel delivery.
Common questions
How do I tell a G1 ReefLED 90 from a G2 light?
The G2 range is labelled ReefLED G2 60, G2 115 or G2 170 on the unit and in the app. A light labelled plainly "ReefLED 90" is the first-generation unit this board fits.
Will this fix dim or discoloured LEDs?
No – that's an LED array or lower-board issue, not something the top control board affects. This board only addresses connectivity, button and display faults.




