Wolf Control / Thermostat Communication Issue

Boiler display works but does not respond to room thermostat changes, heating stays on or off permanently

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

Faulty room thermostat or Wolf controller, Broken communication cable, Incorrect control mode configuration, Stuck relay in external control

Safety: Isolate power before working on control wiring.

Check thermostat batteries: For wireless or battery-powered thermostats, replace batteries and re-pair if necessary.
Verify setpoints and modes: Ensure the controller is not in holiday, frost, or manual override mode.
Inspect wiring: Check that low-voltage control cables are intact and firmly connected at both the boiler and controller.
Technician tasks: A professional can test the thermostat output, eBUS communication, and replace the controller or PCB if required.

Medium 3/5

Room Controller / Thermostat

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