Mitsubishi 4240, 4245, 4246 Error Code

Mitsubishi 4240, 4245, 4246 Error Code Code Text Description Cause Check Procedure 4240, 4245, 4246 Over current protection. If high current is detected for more than 10mins. Check inverter balance. Reduced airflow through heat sink. 1. Error code definitionOverload protection2. Error definition and error detection methodIf the output current of “(Iac) >Imax (Arms)” or “THHS

Mitsubishi 4235, 4236 Error Code

Mitsubishi 4235, 4236 Error Code Code Text Description Cause Check Procedure 4235, 4236 Fan inverter heat sink overheat protection. Reduced airflow through heat sink. Fan motor problem. THHS thermistor problem. 1. Error code definitionHeatsink overheat protection (Detail code 125) (outdoor unit)2. Error definition and error detection methodDetection of fan INV heatsink temperature (THHS) ≥ 100°C3.

Mitsubishi 4230 Error Code

Mitsubishi 4230 Error Code Code Text Description Cause Check Procedure 4230 High temp on Heat sink on inverter. Blockage in air passage of inverter heatsink, Inverter board failure, inverter fan failure. Check blockages in air duct failure of INV fan or failure of thermistor. 1. Error code definitionHeatsink overheat protection (Detail code 125)2. Error definition

Mitsubishi 4220, 4225, 4226 Error Code

Mitsubishi 4220, 4225, 4226 Error Code 1. Error code definitionAbnormal bus voltage drop (Detail code 108)2. Error definition and error detection methodIf Vdc 289V or less is detected during Inverter operation. (S/W detection)3. Cause, check method and remedy (1) Power supply environmentCheck the power-supply wiring for an open phase. Refer to item (6) in section

Mitsubishi 4124 Error Code

Mitsubishi 4124 Error Code Code Text Description Cause Check Procedure 4124 Thermal switch (49c) open circuit on Mr Slim on M-Net. Low refrigearnt charge, reduced airflow, faulty 49c switch. Reset and check pressures and airflow, check continuity of 49c. Error Code 41241. Error code definitionElectric system not operate due to damper abnormality2. Error definition and

Mitsubishi 4121 Error Code

Mitsubishi 4121 Error Code 1. Error code definitionFunction setting error2. Error source, cause, check method and remedyCause Check method and remedy(1) Fan motor connector contact failure Check the fan motor connector CNMF for proper connection.(2) Contact failure of the relay connector for the fan motorCheck the relay connector for the fan motor for proper connection.(3)

Mitsubishi 4116 Error Code

Mitsubishi 4116 Error Code 1. Error code definitionRPM error/Motor error2. Error definition and error detection methodLOSSNAYThe motor keep running even if the power is OFF.The thermal overload relay is ON. (Only for the three-phase model)Indoor unitIf detected less than 180rpm or more than 2000rpm, the indoor unit will restart and keep running for 3 minutes.If

Mitsubishi 4114 Error Code

Mitsubishi 4114 Error Code 1. Error code definitionIndoor unit fan motor error2. Error definition and error detection methodWhen the fan motor output from the indoor unit circuit board is ON and when the rotation speed input from the fan motor cannotbe detected for 30 seconds or more3. Cause, check method and remedy

Mitsubishi 4109 Error Code

Mitsubishi 4109 Error Code 1. Error code definitionIndoor unit fan operation error2. Error definition and error detection method1) Connector CN28 has remained open-circuited for 100 consecutive secondsduring operation.3. Cause, check method and remedyCause Check method and remedy(1) Auxiliary relay fault The coil or the wiring of the auxiliary relay connected toCN28 is faulty.(2) Connector (CN28)

Mitsubishi 4106 Error Code

Mitsubishi 4106 Error Code Code Text Description Cause Check Procedure 4106 Transmission (M-Net) power supply fault. Transmission (M-Net), incorrect wiring. Check wiring, high current, incorrect voltage on transmission line and/or M-Net board. Make sure M-net transmission wiring is daisy chained. 1. Error code definition 2. Error definition and error detection method Transmission power output failure