Trane FTXS15DVJU, FTXS18DVJU, FTXS24DVJU operation manual Fault diagnosis

Fault diagnosis

FAULT DIAGNOSIS BY REMOTE CONTROLLER

In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes.

1.When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.

F F

O N

HOME LEAVE	ON/OFF
POWERFUL	TEMP
MODE	FAN
SILENT	SENSOR SWING
ON	CANCEL	TIMER CANCEL button
OFF		It cancels the timer setting.
	TIMER

2.Press the TIMER CANCEL button repeatedly until a continuous beep is produced.

•The code indication changes as shown below, and notifies with a long beep.

	CODE	MEANING
	00	NORMAL
SYSTEM	U0	REFRIGERANT SHORTAGE
	U2	DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
	U4	FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
	A1	INDOOR PCB DEFECTIVENESS
INDOOR	A5	HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
	A6	FAN MOTOR FAULT
UNIT
	C4	FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
	C9	FAULTY SUCTION AIR TEMPERATURE SENSOR
	EA	COOLING-HEATING SWITCHING ERROR
	E5	OL STARTED
	E6	FAULTY COMPRESSOR START UP
	E7	DC FAN MOTOR FAULT
	E8	OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT
	F3	HIGH TEMPERATURE DISCHARGE PIPE CONTROL
OUTDOOR	H6	OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
UNIT	H8	CT ABNORMALITY
	H9	FAULTY SUCTION AIR TEMPERATURE SENSOR
	J3	FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
	J6	FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
	L4	HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
	L5	OUTPUT OVERCURRENT
	P4	FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR

NOTE

1.A short beep and two consecutive beeps indicate non-corresponding codes.

2.To cancel the code display, hold the TIMER CANCEL button down for 5 seconds. The code dis- play also cancel itself if the button is not pressed for 1 minute.

28