ตู้ ATM ไม่จ่ายเงิน? เงินติดในชุดจ่าย ถังคืนธนบัตร เซนเซอร์ และการอ่านรหัสข้อผิดพลาด

When an ATM accepts a withdrawal but doesn’t hand over cash, the dispenser failed somewhere in its pick-and-present cycle — almost always a note jam, a blocked sensor, or a reject-bin issue. The fault code tells you which. But because cash is involved, the order of operations matters:

The cash dispenser unit (CDU) runs a tight cycle for every withdrawal: it picks notes one at a time from a cassette, counts them and checks for doubles with optical sensors, transports them along a feed path, and presents them at the shutter. Any note it can’t verify as a clean single is diverted to the reject bin.

Understanding the cycle explains the symptoms: a jam stops transport; a dirty double-detect sensor mis-reads notes and over-rejects; a missing or mis-sensed reject bin halts the cycle for safety. The fault code maps to the stage that failed.

Match the symptom to narrow the cause before you open anything:

Work the sequence in order, always within your documented procedure and security rules. Stop and escalate if the fault is beyond routine clearing.

There is no universal ATM fault-code list — each manufacturer has its own. The code is still your fastest diagnosis, so look it up against your machine’s table:

When cleaning and clearing don’t fix it, these are the parts that wear or fail in a dispenser — replace via authorized service, matched to your machine:

For related power and parts sourcing, see our power supply failure guide, and browse repair parts in our terminal repair parts, other parts and power supplies categories. For the ATM card-reader side, see our ATM card reader heads guide. Tell us your ATM model and the fault code and we’ll help identify the right dispenser part — fitted by authorized service.