one shot thermostat tripped,2 ways,u can either either give me the part number and i'll post a set out to u or if u take the back panel off and removed the 2 scews holding the heater in,theres 2 stats on top,one has a small hole init big enuff to push a paper clip init to pop it back,tho it does go for a reason,give me the model number and i can help more