Customer Reviews for SPT 15 in.1200 - Watt Ceramic Heater with Humidifier and Thermostat

JUST brought this back to our 30 foot Airstream today (not a big space), put in the water, plugged it in and set the heat/humidity and temp controls on high to warm it up in here. It comes on ....and then goes off again in 20 seconds. HOW is it ever going to warm up? It's off much longer than it's on. I called the 909 number in the manual (which has no trouble shooting section) but it is "no longer in service".. lovely.