Bed suddenly wont go above 50 degrees

since my last print my bed wont go above 50 degrees celsius… it behaves as normal in every other aspect.
what can cause this?

[quote=“Alloca”]since my last print my bed wont go above 50 degrees celsius… it behaves as normal in every other aspect.
what can cause this?[/quote]

Try swapping the thermistor connectors on the controller (i.e. plug Hotend to heatbed and vice versa)
Does that give you other readings on your heatbed thermistor?

Make sure there is no draft blowing across the bed and the room temp is reasonable.