TROUBLESHOOTING · REPLACEMENT · B2B MATCHING
A door that will not move is not automatically a motor failure. Use this safe, observable checklist to record the symptom, control context and visible door condition before a qualified assessment or B2B replacement inquiry.
SIX SAFE CHECKS
State whether the door is unresponsive, stops part-way, moves unevenly, makes an unusual sound or responds inconsistently. Note when the symptom first appeared and whether it affects opening, closing or both.
Record the wall control or remote used, whether other controls respond, the visible indicator state and any recent power interruption, site work or impact to the door. Do not open electrical enclosures.
From a safe position, record visible debris, a bent curtain, damaged guide, unusual gap, loose exterior hardware or a door that is visibly out of alignment. Do not force the door or release springs, shafts or drive components.
If the door is jammed, makes a persistent abnormal sound, travels unexpectedly or has a visible mechanical problem, stop repeated operation and arrange an on-site assessment. Repeated running can make the original fault harder to assess.
Photograph the complete motor nameplate, controls, receiver, shaft or drum, drive arrangement and the affected door. Record site voltage, phase and frequency only when confirmed by qualified personnel.
Send the symptom record and system evidence for a B2B replacement review. A model match should be considered only after the actual door, drive, electrical supply, controls, use and required package are checked.
No. An unresponsive door can involve the control path, site power, a visible obstruction, the door mechanism or the motor. Record the symptom and the installed system before requesting a replacement match.
Stop repeated operation, keep people clear of the door and record the observable symptom. Mechanical, electrical and drive diagnosis should be handled by qualified personnel under applicable local rules.
No. A remote, receiver, controller and motor need to be checked as a system. Similar housing, button layout or a replacement remote alone does not establish compatibility or identify the fault.
Provide the complete motor nameplate, door and curtain, shaft or drum, roller, sprocket or chain where applicable, controller, receiver and the visible installation arrangement. Include the symptom and the required package.
After recording the door, drive, electrical supply, controls, operating use, existing motor evidence and the observable symptom. The final model, package contents and commercial terms remain quotation-specific.
Use the replacement evidence checklist → · Check the control-system inputs → · Put the facts into an RFQ →
This page is a symptom-record and procurement guide, not a repair, installation or electrical-work procedure. Isolation, testing, wiring and mechanical work should be handled by qualified personnel under the applicable local rules.REQUEST A QUALIFIED REVIEW
YERQI can identify missing B2B replacement inputs before a model-specific response.