Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
Control circuit abnormality causes a Control circuit error. The manual's first action is: “CALL SERVICE ENGINEER”
Control clock lost causes a Control circuit error. The manual's first action is: “CALL SERVICE ENGINEER”
Control microprocessor abnormality causes a Control circuit error. The manual's first action is: “CALL SERVICE ENGINEER”
Control microprocessor abnormality causes a Control circuit error. The manual's first action is: “CALL SERVICE ENGINEER”
Fin temp. abnormal because IGBT unit fin temperature is abnormally high. The manual's first action is: “CALL SERVICE ENGINEER”
Inverter overcurrent due to excessive current drawn by the inverter. The manual's first action is: “CALL SERVICE ENGINEER”
Inv. control abnormal from inverter current control error. The manual's first action is: “CALL SERVICE ENGINEER”
52C abnormal because 52C turns off unexpectedly during inverter load. The manual's first action is: “CALL SERVICE ENGINEER”
Power unit error detected during load on bypass due to IGBT unit failure. The manual's first action is: “CALL SERVICE ENGINEER”
Inv. Volt. (DC) abn. occurs when output voltage contains unwanted DC components. The manual's first action is: “CALL SERVICE ENGINEER”
52C abnormal because 52C fails to turn on properly. The manual's first action is: “CALL SERVICE ENGINEER”
Output undervoltage happens when output voltage drops below acceptable levels under load. The manual's first action is: “CALL SERVICE ENGINEER”
Output overvoltage occurs during load on the inverter, exceeding safe output levels. The manual's first action is: “CALL SERVICE ENGINEER”
DC unbalanced due to voltage imbalance across DC capacitors. The manual's first action is: “CALL SERVICE ENGINEER”
DC voltage abnormal when DC overvoltage or reversal voltage is detected. The manual's first action is: “CALL SERVICE ENGINEER”