HVAC, Appliance, CNC, and VFD Error Code Repair Guides
Browse repair guides for HVAC, appliances, refrigeration, CNC alarms, VFD faults, generators, boilers, water heaters, and commercial equipment.
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Rinnai Error Code 52 — Outlet Water Temperature Sensor Fault
Updated:Rinnai tankless water heater Error Code 52 means the outlet water temperature sensor has failed. Learn causes, diagnostic steps, and the fix.
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Middleby Marshall Oven Fault Codes - PS528 and PS536
Updated:Middleby Marshall oven fault guide for PS528, PS536, WOW, and CTX thermocouple, ignition, high-limit, blower, conveyor, and gas-valve faults.
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True GDM-23 Error Codes
Updated:True GDM-23 guide for digital sensor, defrost, and temperature-control faults, including E1-E6 checks and parts to inspect first.
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True T-49 Refrigerator Error Codes
Updated:True T-49 guide for E1-E6 refrigerator faults, cabinet sensors, evaporator sensors, defrost circuits, fan motors, and controller checks.