Honda · Miimo HRM4000
Boundary wire / signal problem
If your Honda Miimo HRM4000 shows Boundary wire / signal problem, do not replace parts from the message alone. Start with the checks below to separate installation, obstruction, power, positioning and component faults where applicable.
Most likely causes
- Boundary wire, docking station or installation condition
Diagnostic checks in order
- Check boundary wire, station power and installation against the model owner manual.
Retest after each meaningful change. If the mower returns to normal, stop changing variables and monitor the result.
Safety
- Stop the mower and follow the manufacturer shutdown/isolation procedure before touching blades, wheels, charging contacts or internal components.
Escalate procedures involving mains electricity, battery-pack disassembly, sealed electronics or proprietary service tooling.
Parts potentially involved
- No replacement part should be ordered until the fault is isolated; inspect model-specific components named in the diagnostic procedure.
Association is not diagnosis: confirm the failed path before ordering components.
Evidence
Grade B — Manufacturer/model-family evidence
Applicability: {'model': 'Miimo HRM4000', 'family': 'Honda Miimo family', 'scope': 'Manufacturer/product-family corroboration; exact menu names, limits and part numbers must be confirmed for this model.'}
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