Incubation · Troubleshooting

Diagnose with a method.

Simple, safe checks to understand the problem before replacing a part.

Reviewed procedures

Identify a controller before intervention

XH-W3001 and XM-18 families exist with different voltages, probes, terminals and functions. Record the full reference, photograph the label and compare the diagram in the exact manual before replacement. A shared trade name does not guarantee compatible wiring.

Follow the alarm-diagnosis method →

Safety first

Work on 220V must be performed with the supply isolated by a competent person. General checks in this library never justify inferring a mains connection without the manual for the exact hardware.