Inspect electrical terminal blocks for signs of heat discoloration or loose wires. Electrical Cabinet
The manual outlines several parameters essential for setting up the hot (heating) functionality. Access these via the front keypad. Primary Parameter Setup: thermotech tt91 manual hot
This unit is intended for indoor use only. Avoid areas with high vibration, flammable gases, or high humidity. Error Messages OPEn: Indicates a sensor break or open circuit. Inspect electrical terminal blocks for signs of heat