Hello, We have a Coleman heater that has the indicator light blinking 11 times. It is in our place in Tahoe and the battery had died in the thermostat so there was a error message and nothing was happening when we got here. We changed the battery in the thermostat, turned it off, turned off the heater at the breaker, and turned them all back on... blinking 11 times, cold air blowing out. Any suggestions? Burrrrr... in Tahoe