Is there something wrong with your Trane AC? Check the appliance for an error code. Having found the code in the list below, you will be able to read the explanation and discover what the problem is. Next, you may try to resolve the issue. In case of a minor issue, you may be able to fix it on your own. If the malfunction is serious, the table will advise you to contact customer care.

Trane R410a air conditioner error codes

Error codes	Error Description	Error Displayed on Remote	Unit Response
0x01	EEPROM communication error	Error 01 EEPROM communication error	Unit Stops Working
0x02	Compressor Failure error or refrigerant leakage	Error 02 OutDoorUnit Error
0x03	Filter choke Error	Error 03 Filter choke error - Clean the filter	Unit Operates as per user settings
0x04	Indoor Room temperature sensor error	Error 04 Room temp sensor failure	Cool mode or Dry mode: Unit operate with Compressor OFF. Fan mode: Operates as per user setting
0x06	Indoor coil temperature sensor error	Error 06 Indoor temp sensor failure	Cool mode or Dry mode: Unit operate with Compressor OFF. Fan mode: Operates as per user setting
0x08	Communication error	Error 08 Communication error	Stop indoor unit and outdoor unit
0x09	Low battery	Error 09 Low battery please change the battery	Operates indoor unit and outdoor unit as per user setting.
OxOA	Input Power Error	Error 10 IDU Input Power Problem	Unit stops working
OxOB	IDU Error - Fan failure	Error 11 IDU Error - Fan Failure
OxOD	Communication error (IDU to ODU)	Error 13: Communication error (IDU to ODU)	Cool mode or Dry mode: Unitwill run with Compressor OFF. Fan mode: Run IDU as per user settings."
OxOE	Outdoor discharge temperature sensor error	Error 14: Outdoor discharge temperature sensor error
OxOF	Outdoor EEPROM parameter reading error	Error 15: Outdoor EEPROM parameter reading error
0x13	IPM module failure	Error 19: IPM module failure
0x14	High/ Low Voltage protection	Error 20 :High/ Low Voltage protection
0x17	Compressor position protection	Error 23:Compressor position protection
0x1A	Outdoor Condenser coil temperature sensor error	Error 26: Outdoor Condenser coil temperature error

Trane R-410A Split air conditioner error codes

code	malfunction	Error display/Dual 8 display	LED	Repair method
1	Storage slug	EE	Heating LED-pause 3s and blink 15 times	Replace indoor main board
2	Indoor PCB malfunction	EE	Heating LED-pause 3s and blink 15 times
3	Anti-freezing protection	E2	Running LED- pause 3s and blink 2 times	Outdoor ambient temperature is too low
4	Overload of system	H4	Heating LED-pause 3s and blink 4 times	System is abnormal, check if the evaporator and condenser is dirty and blocked
5	No motor of indoor unit feedback	H6	Running LED- pause 3s and blink 11 times	Is electromotor mounted normally?
6	Indoor pipe temperature sensor malfunction	F2	cooling LED- pause 3s and blink 2 times	Is it loose? Measure the resistance value with universal meter
7	Internal ambient temperature sensor malfunction	F1	Cooling LED- pause 3s and blink 1 times
8	Zero passage abnormal	UF	Heating and cooling LED blinks 7 times at the same time	Replace indoor main board
9	Overload of compressor	H3	heating LED- pause 3s and blink 3 times	Inspect connection state of the overload wire.
10	Startup failure	Lc	heating LED- pause 3s and blink 11 times	Check if the resistance of compressor and resistance to ground is normal. If the compressor is normal, the outdoor main boar d may be wrong.
11	No motor of outdoor unit feedback	UH	Heating and cooling LED blink 8 times at the same time	This malfunction may happen when outdoor DC electromotor is used.
12	Overcurrent protection	E5	Running LED- pause 3s and blink 5 times	Is electric network variable?
13	4-way valve Conversion abnormal	U7	cooling LED- pause 3s and blink 20 times	Replace 4-way valve.
14	Phase current detection malfunction of compressor	U1	Heating LED- pause 3s and blink 13 times	Replace outdoor main board.
15	Sync failure	H7	Heating LED-pause 3s and blink 7 times	Check if the resistance of compressor and resistance to ground is normal. If the compressor is normal, the outdoor main boar d may be wrong.
16	Current diction malfunction of complete unit	U5	Cooling LED-pause 3s and blink 13 times	Replace outdoor main board
17	Outdoor ambient temperature sensor malfunction	F3	Cooling LED-pause 3s and blink 3 times	Is it loose? Measure the resistance value with universal meter
18	Discharge protection of compressor	E4	Running LED-pause 3s and blink 4 times
19	Break-circuit and short-circuit of outdoor discharge temperature sensor	F5	cooling LED- pause 3s and blink 5 times
20	Break-circuit and short-circuit of outdoor condenser temperature sensor	F4	cooling LED- pause 3s and blink 18 times
21	Overheat of carbon fin	P8	heating LED- pause 3s and blink 19 times	Is outdoor ambient temperature is too high? Is radiator mounted correctly?
22	DC overcurrent	UU	Heating and cooling LED blink 11 times at the same time
23	Temperature sensor malfunction of carbon fin	P7	heating LED- pause 3s and blink 18 times	Replace outdoor main board.
24	Lack of Freon or block protection	FO	cooling LED- pause 3s and blink 10 times
25	DC input voltage is too high	PH	cooling LED- pause 3s and blink 11 times	Is voltage of AC power supply normal?
26	DC input voltage is too low	PL	Heating LED- pause 3s and blink 21 times	Is voltage of AC power supply normal?
27	Communication malfunction	E6	Running LED- pause 3s and blink 6 times	Is outdoor connecting wire reliably connected?
28	Setting error, indoor and outdoor unit abnormal	UA	Heating and cooling LED blink 12 times at the same time	Outdoor unit is not matched with indoor unit.