Trane Air Conditioner Error Codes

1. Trane Split System Error Codes
2. Mini TVR 5G Error Codes
3. Ceiling-Cassette Error Codes

1-Trane Split System Error Codes:

Trane Split AC Error Codes

9, 12 MBH – 60 and 50 Hz ( No LED light on outdoor PCB)

Error Code	Problem
EE	Storage slug
E1	Indoor PCB malfunction
E2	Anti-freezing protection
H4	Overload system
H6	No motor of indoor unit feedback
F2	Indoor pipe temperature sensor malfunction
F1	Internal ambient temperature sensor malfunction
UF	Zero passage abnormal
H3	Overload of compressor
Lc	Startup failure
UH	No motor of outdoor unit feedback
E5	Overcurrent protection
U7	4-way valve conversion abnormal
U1	Phase current detection malfuntion of compressor

2-Trane Mini TVR 5G Error Codes:

Trane Air Conditioner Error Codes

Malfunction Code Of Outdoor Unit (12/14/16kw):

Display: H0

Malfunction or Protection: M_Home unmatching

Display: E0

Malfunction or Protection: EEPROM Fault

Display: E2

Malfunction or Protection: Communication fault of the outdoor chip and the indoor chip

Display: E3

Malfunction or Protection: Communication error between Main board and IR341
Display: E4

Malfunction or Protection: Outdoor unit sensor fault

Display: E5

Malfunction or Protection: Voltage protection fault

Display: E6

Malfunction or Protection: Direct-current fan fault

Display: E7

Malfunction or Protection: Heating fan fault in the area A lasts for 5 minutes

Display: E8

Malfunction or Protection: There are two times E6 fault in 10 minutes (recovery will be after power off)

Display: P0

Malfunction or Protection: The cooling fin high temperature protection

Display: P1

Malfunction or Protection: High pressure protection

Display: P2
Malfunction or Protection: Low pressure protection

Display: P3

Malfunction or Protection: Compressor current protection

Display: P4

Malfunction or Protection: Discharge temperature protection

Display: P5

Malfunction or Protection: Outdoor condenser high temperature protection

Display: P6

Malfunction or Protection: IPM modules protection

Display: P7

Malfunction or Protection: Evaporator high temperature protection

Display: P8

Malfunction or Protection: Typhoon protection

Display Function Instruction:

1. When stand by, LED displaying the amount of indoor units online which communicate with outdoor units.
2. When operation, LED displaying frequency value of compressor.
3. When defrost, LED displaying “dF”.

Malfunction Code Of Outdoor Unit (8/10.5/18kW):

Display: E2

Malfunction or Protection: Communication malfunction between indoor/outdoor units

Display: E4

Malfunction or Protection: T3&T4 temperature sensor malfunction

Display: E5

Malfunction or Protection: Power voltage protection

Display: E6

Malfunction or Protection: Fan Protection

Display: E7

Malfunction or Protection: Compressor discharge temperature sensor malfunction
Display: E9

Malfunction or Protection: EEPROM malfunction

Display: EA

Malfunction or Protection: A fan in the Aregion run for more than 5 minutes in Heat mode

Display: Eb

Malfunction or Protection: 2 times of E6 protection in 10 minutes

Display: H0

Malfunction or Protection: Communication malfunction between IR341/main board

Display: P1

Malfunction or Protection: Hi-pressure protection

Display: P2

Malfunction or Protection: Low-pressure protection

Display: P3

Malfunction or Protection: Input current protection

Display: P4

Malfunction or Protection: Compressor discharge protection temperature

Display: P5

Malfunction or Protection: Condenser high temperature protection

Display: P6

Malfunction or Protection: Inverter module protection

Display: P8

Malfunction or Protection: Typhoon protection

Display: PE

Malfunction or Protection: Indoor evaporator hi-tempprotection

Display: L0

Malfunction or Protection: Module malfunction

Display: L1

Malfunction or Protection: DC generatrix low voltage protection

Display: L2

Malfunction or Protection: DC generatrix high voltage protection

Display: L3

Malfunction or Protection: Reserved

Display: L4

Malfunction or Protection: MCE malfunction/simultaneously/cycle loop

Display: L5

Malfunction or Protection: Zero speed protection

Display: L6

Malfunction or Protection: Reserved

Display: L7

Malfunction or Protection: Wrong phase protection

Display: L8

Malfunction or Protection: Speed difference>15Hz protection between the front and the back clock

Display: L9

Malfunction or Protection: Speed difference>15Hz protection between the real and the setting speed

Display Function Instruction:

1. When stand by, LED displaying the amount of indoor units online which communicate with outdoor units.
2. When operation, LED displaying frequency value of compressor.
3. When defrost, LED displaying “dF”.

3-Ceiling-Cassette Error Codes:

Trane Cassette Indoor Unit Error Codes

Error code: 416

Explanation: Compressor down due to protection control of the discharge temperature sensor

Error code: 450

Explanation: Error due to condenser temperature sensor when in cooling mode
Error code: 451

Explanation: Error of the low pressure switch (Protection control)

Error code: 425

Explanation: Reverse phase error (Protection control)

Error code: 551

Explanation: In removing frost

Error code: 221

Explanation: Error of outdoor temperature sensor (Open/Short)

Error code: 237

Explanation: Error of condenser temperature sensor (Open/Short)

Error code: 201

Explanation: System down caused by communication error after completion of tracking Mismatching of indoor unit quantity setting error after completion of tracking 5 times

Error code: 251

Explanation: Error of discharge temperature sensor (Open/Short)

Error code: 121

Explanation: Error of temperature sensor in the indoor unit (Open/Short)

Error code: 122

Explanation: Error of the heat exchanger sensor in the indoor unit (Open/Short)

Error code: 419

Explanation: Error of electronic expansion valve open in the outdoor unit (when it is detected more than once)

Error code: 422

Explanation: Error of electronic expansion valve close in the outdoor unit (when it is detected more than once)

Error code: 601

Explanation: Error of communication between the indoor unit and the wired remote controller

Error code: 602

Explanation: Master wired remote controller / slave wired remote controller

Error code: 606

Explanation: Polarity error (F1/F2, F3/F4 switched)

Error code: EA

Explanation: Error of setting option for wired remote controller COM2