Merlin Stuck Light Relay or Misconfigured Light Timer

Courtesy light stays on continuously and does not turn off after the usual timeout.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Relay contacts welded closed, Light timer set to maximum, Wall station light button latched on, Control board fault

Safety first: Turn off power before opening the housing.

Check wall station light button: Press the light button on the Merlin wall control to toggle the light. Ensure it is not stuck.
Verify timer setting: In the opener menu, check the courtesy light timeout and set it to a normal value (e.g., 2–5 minutes).
Inspect relay: With power off, examine the light relay on the PCB. If it shows signs of overheating or if the light remains on even with the relay coil unpowered (requires technical testing), the board must be replaced.

Medium 3/5

Merlin Control Board (Logic PCB)

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