The Toyotomi Temperature Fuse, part number 20476920, is a safety over-temperature protective component designed for use in select Toyotomi Toyostove oil-fired water heaters such as the OM-122DW and OM-128HH Type B models. It acts as a one-time safety cutoff that interrupts operation if internal temperatures exceed safe limits, helping prevent damage caused by overheating. This fuse is manufactured to meet original equipment specifications so it installs directly in the appropriate location within the heater’s safety control system when replacing a blown or tripped temperature fuse.
This temperature fuse is intended for use during routine service or when the heater has been shut down by its safety system due to excessive internal temperatures, making resetting or normal restart impossible without replacement. It helps protect internal components and combustion systems by stopping operation when an abnormal heat condition occurs. Installation should follow the heater’s service manual guidelines and be performed with the heater powered off to ensure correct placement and secure connections within the safety circuit.
What’s Included: One (1) Toyotomi temperature fuse 20476920.
Installation Limits: For replacement use only in compatible Toyotomi oil-fired water heaters; install with the heater powered off and confirm correct positioning and secure mounting as specified in the service documentation.
Compatibility: Compatible with Toyotomi Toyostove OM-122DW and OM-128HH Type B oil-fired water heaters that require a temperature fuse safety cutoff component.
