Sage Output drive failure / safety interlock not engaging

Timer counts down but heater and fan never start.

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

Door/basket switch not recognized, Failed relay drivers on control PCB, Broken trace between MCU and relays, Corrupted control firmware

Safety first: Unplug before internal checks.

Confirm basket detection: Ensure the basket is fully inserted and any door indicator shows closed.
Listen for relays: When starting a cycle, you should hear clicks from relays. No clicks suggest a control issue.
Inspect board: Look for burnt or cracked solder joints around relay pins. Reflowing joints is possible for experienced technicians; otherwise replace the board.
Switch testing: Verify the basket/door switch operates correctly with a multimeter. Replace if faulty.

Hard 4/5

Main Control PCB

Check Price on Amazon

We may earn a commission from links on this page.