Order Number: #UT_3864-WH/OUT/65782
Product Name: Dys 80a 2-6s Brushless Esc With 5v/6a Bec For Rc Fixed-Wing Aircraft
Brand: DYS
ESC doesn’t work with RX, connected with and without external RX battery. Beeps constantly but does not recognise top throttle position or any throttle input.
tried same set up with 30a ESC which works without issue.
Hi, good day,
Thanks for the detailed notes — and sorry you’re having a headache with the DYS 80A 2–6S ESC. We’ll get this sorted with you.
First, a couple of quick safety notes (props off, please!) and then a focused checklist that usually fixes “constant beeping / no throttle” on fixed-wing ESCs:
1) Confirm the signal type
This ESC expects a standard PWM throttle signal direct from the receiver’s CH3/Throttle port. If you’re going via a flight controller or using SBUS/PPM, please plug the ESC’s signal lead straight into the receiver’s throttle channel to test.
2) Throttle end-point & direction
A reversed or out-of-range throttle often causes continuous beeping (ESC thinks throttle is “high”). On your radio:
• Make sure throttle isn’t reversed.
• Temporarily widen throttle endpoints (e.g., 110%/110%) to guarantee the ESC “sees” full range. Then try a fresh calibration (next step).
3) Throttle calibration (DYS method)
• TX on, throttle stick full HIGH.
• Connect the flight battery to the ESC; wait for the calibration beeps sequence.
• Move throttle to LOW immediately when the tones finish, wait for confirmation beeps.
• Power-cycle and test.
4) Power & wiring sanity checks
• This ESC has a 5 V/6 A SBEC designed to power the RX/servos — so no external RX battery is required. Please try with the ESC BEC only (and also once with the external pack removed) and confirm the receiver powers up solidly.
• Verify the signal wire orientation at the receiver (signal to “S”, red to “+”, black/brown to “–”).
• If available, try a different RX or a short servo lead to rule out a cable fault.
5) A quick A/B test
You already tested a 30 A ESC successfully — great data. If the above steps don’t resolve it, that strengthens the likelihood of an ESC fault.
If you can, please reply with:
• A short video showing power-up, the beeps, and your throttle stick movement (this lets us confirm the exact beep code and throttle range).
• Your radio & receiver models, and whether you’re connecting the ESC directly to the RX or via a flight controller.
• Order number and the date you received the ESC (so we can check warranty timelines). For faulty items we support up to 6 months from receipt, and we do need basic remote troubleshooting/video before we issue an RMA — that way we can get a quick manufacturer approval for you.
What happens next
• If the video shows a likely fault or the steps above don’t work, we’ll move this to a warranty claim and either arrange a replacement or refund (depending on age/stock). We’ll guide you through the RMA if needed.
• If the manufacturer wants the unit back, we’ll confirm return details; otherwise we’ll proceed based on their guidance.
Optional tool that can help isolate the issue
If you’d like a simple bench test (no receiver), a servo/ESC tester can directly drive the ESC’s PWM input. The ToolkitRC ST8 supports PWM/PPM/SBUS and makes range issues obvious.
We’re keen to get you flying — once we have that short video and the details above, we’ll take it from there right away.
Regards,
David
Unmanned Tech Support
support@unmannedtech.co.uk | +44 (0)118 230 0123