Thermo King Heater Not Working. Your thermo king’s engine should be running in a/c mode while doing this procedure. 9131 10th avenue south, seattle, wa 98108 phone:

Heater starts smoking like crazy out the exhaust at rear of truck, after 3 minutes of this bunk heater shuts down. If the engine coolant temperature rises above an acceptable level, the microprocessor records alarm code 41 and possibly 18. Thermo king heater not working.