I’ll put money on the fact that many steam cleaners like this one are thrown away needlessly due to blockages which could be easily cleared using everyday items.
This Hoover S2IN1300C hand held steam cleaner appeared to switch on OK (LED lamp on), the pump ran OK, but even with a full tank of water, no steam came out of the steam nozzle.
Off with the cover and after checking the pipes for leaks and pinches, it appeared that all was well. The pump did indeed run and the boiler appeared to get very hot.
After a fair bit of dismantling, it appeared that the nozzle was blocked by a build-up of chalk.
Cost of replacement; £30-50, cost of repair – some white vinegar.
Have a look at the video…