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Daikin SM-TS3 HVAC Self-Diagnosis

Daikin SM-TS3 HVAC Self-Diagnosis Error Codes

Complete alarm and error code reference for the Daikin SM-TS3 HVAC Self-Diagnosis. Browse all 139 documented fault codes below, each linking to a detailed troubleshooting guide.

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Complete Alarm List

External protection device activated

Malfunction of indoor unit PCB

Drain Level Control System Abnormality

Malfunction of freezing protection

High pressure control in heating, freeze-up protection control in cooling

Malfunction of fan motor

Malfunction of swing flap motor

Malfunction of power supply or AC input overcurrent

Malfunction of electronic expansion valve

Heater overheat

Malfunction of a humidifier system

Malfunction of dust collector of air cleaner

Malfunction of capacity setting (Indoor unit PCB)

Failure of transmission (between indoor unit PCB and sub PCB)

Malfunction of liquid pipe thermistor for heat exchanger

Malfunction of gas pipe thermistor for heat exchanger

Malfunction of fan motor sensor or fan control driver

Front panel driving motor fault

Malfunction of suction air thermistor

Malfunction of discharge air thermistor

Malfunction of humidity sensor system

Room temperature thermistor in remote controller abnormality

Protection devices activated (unified)

Defective outdoor unit PCB

Actuation of high pressure switch (HPS)

Actuation of low pressure switch (LPS)

Inverter compressor motor or overheat

STD compressor motor overcurrent/lock

Malfunction of outdoor unit fan motor system

Overcurrent of inverter compressor

Malfunction of electronic expansion valve coil

Malfunction of four way valve or cool/heat switchin

Malfunction of entering water temperature

Malfunction of discharge pipe temperature

Abnormal high pressure or refrigerant overcharged

Malfunction of sensor system of compressor

Malfunction of room temperature sensor or humidifier unit damper

Malfunction of high pressure switch (HPS)

Malfunction of low pressure switch (LPS)

Malfunction of compressor motor overload thermistor

Malfunction of position detection sensor

Malfunction of outdoor unit fan motor signal

Malfunction of compressor input (CT) system

Malfunction of outdoor air thermistor

Malfunction of (hot) water temperature thermistor

Alarm in thermal storage unit or storage controller

Malfunction of thermal storage tank water level

Malfunction of pressure sensor

Malfunction of current sensor of compressor

Malfunction of discharge pipe thermistor

Malfunction of low pressure equivalent saturated temperature sensor system

Malfunction of suction pipe thermistor

Malfunction of heat exchanger thermistor

Malfunction of thermistor (Refrigerant circuit)

Malfunction of thermistor (Refrigerant circuit)

Malfunction of thermistor (Refrigerant circuit)

Malfunction of high pressure sensor

Malfunction of low pressure sensor

Malfunction of oil pressure sensor or sub-tank thermistor

Malfunction of oil level sensor or heating heat exchanger thermistor

Malfunction of inverter system

Malfunction of inverter PCB

El.compo. box temperature rise

Malfunction of inverter radiation fin temperature rise

nverter instantaneous overcurrent (DC output)

Inverter instantaneous overcurrent (AC output)

Malfunction of overcurrent inverter compressor

Malfunction of inverter compressor startup error (Stall prevention)

Malfunction of power transistor

Malfunction of transmission between control and inverter PCB

Malfunction of central remote controller PCB

Malfunction of transmission between optional controllers for centralized control

Improper combination of optional controllers for centralized control

Address duplication, improper setting

Shortage of refrigerant amount (thermal storage unit)

Power voltage imbalance or inverter PCB

Automatic refrigerant charge operation stop

Malfunction of thermistor in switch box

Malfunction of radiation fin temperature sensor

Heat exchanger freezing protection during automatic refrigerant charging

Malfunction of fan motor (humidifier unit)

Refrigerant cylinder during automatic refrigerant charging

Refrigerant cylinder during automatic refrigerant charging

Automatic refrigerant charge operation nearly completed

Refrigerant cylinder during automatic refrigerant charging

Malfunction of capacity setting (Outdoor unit PCB)

Shortage of refrigeran

Reverse phase, open phase

Malfunction of power supply or instantaneous power failure

Check operation not executed or transmission error

Malfunction of transmission between indoor and outdoor unit

Malfunction of transmission between indoor unit and remote controller

Malfunction of transmission between indoor units

Malfunction of transmission between outdoor units or outdoor storage unit

Malfunction of transmission between remote controllers

Malfunction of transmission (other system)

Defect of indoor/outdoor power supply

Malfunction of setting of centralized control equipment address

Malfunction of transmission between indoor unit and centralized control equipment

System is not set yet

Malfunction of system

Malfunction of transmission (accessory device)

External protection device activated (Heat reclaim ventilator)

Malfunction of indoor air thermistor (Heat reclaim ventilator)

Malfunction of outdoor air thermistor (Heat reclaim ventilator)

Malfunction of damper system (Heat reclaim ventilator)

System No. 2 Compressor overheat

System No. 2 Compressor overcurrent

System No. 2 Fan motor overcurrent

System No. 2 Actuation of high pressure switch (HPS)

System No. 2 Actuation of low pressure switch (LPS)

System No. 2 Malfunction of low pressure sensor

System No. 2 Malfunction of high pressure sensor

System No. 1 Malfunction of fan inter lock

System No. 2 Malfunction of fan inter lock

System No. 2 Malfunction of compressor current sensor

System No. 2 Malfunction of pump inter lock

Malfunction of entering water temperature thermistor

Malfunction of leaving water temperature thermistor or drain pipe heater

System No. 1 Malfunction of refrigerant thermistor

System No. 2 Malfunction of refrigerant thermistor

System No. 1 Malfunction of heat exchanger thermistor

System No. 2 Malfunction of heat exchanger thermistor

System No. 1 Malfunction of discharge pipe thermistor

System No. 2 Malfunction of discharge pipe temperature

Malfunction of brazed-plate heat exchanger freezing

System No. 2 Malfunction of leaving water temperature thermistor

System No. 1 Malfunction of suction pipe thermistor 1 for heating

System No. 1 Malfunction of suction pipe thermistor 2 for heating

Abnormal hot water high temperature

Abnormal chilled water quantity or abnormal AXP

System No. 2 Malfunction of electronic expansion valve

System No. 2 Malfunction of suction pipe thermistor

Malfunction of transmission (between heat reclaim ventilator and fan unit)

System No. 1 Malfunction of inverter system

System No. 2 Malfunction of inverter system

Malfunction of thermal storage unit

Malfunction of thermal storage brine pump

Malfunction of thermal storage brine tank