The Toyotomi High Limit Switch, part number 20476706, is a safety-critical thermostat switch used in select Toyotomi Toyostove heaters to detect excessive internal temperatures and interrupt the heater’s operation if unsafe heat levels are reached. It monitors air or component temperatures and opens the electrical circuit when the preset limit is exceeded, helping protect the heater and surrounding areas from overheating conditions. This high limit switch is manufactured to match original equipment specifications and provides reliable thermal safety performance when installed in place of a worn or failed limit switch.
This switch is intended for service replacement when the original high limit switch no longer responds accurately to temperature changes, shows signs of wear, or has failed open or closed. Proper routing of wiring and correct mounting are important to ensure the switch senses the intended temperature zone within the heater. Installation must follow the manufacturer’s service instructions so that the switch is positioned and connected per the specific heater model’s safety circuit configuration.
What’s Included: One (1) Toyotomi high limit switch for specified Toyostove models.
Installation Limits: For use only with compatible Toyotomi heaters; install with the heater powered off and follow the service manual to ensure correct wiring and placement to maintain safety functions.
Compatibility: Designed for use on Toyotomi Toyostove models such as OM-180 and Oil Miser 128HH that require the specified high limit switch in their safety control circuits.
Oil Miser 128HH, High Limit Switch is located next to Heat Exchanger Assembly.
Oil Miser 180, High Limit Switch is located next to Heat Exchanger Assembly.
