Trane VRF Error Codes

Trane VRF Error Codes

If an error occurs, one of more of the LEDs on the display (see “Components” for their location) will flicker.

As a protection strategy, the unit stops operating (and the LED turns off). If the unit is turned on before the problem is resolved, the LED will resume flickering and the unit will stop operating again.
4-Way Cassette-Indoor
1-Way Cassette-Indoor
Mini-4-Way Cassette-Indoor
Convertible Ceiling-Floor-Indoor
High Wall-Indoor
Big Duct-Indoor
Slim, MSP, and HSP Duct-Indoor
Mini-Outdoor
Outdoor
 Variable Refrigerant Volume 
E121- Indoor temperature sensor error (shorted or open)
E122- Evap-in sensor error (shorted or open)
E123- Evap-out sensor error (shorted or open)
E126- Discharge sensor error (shorted or open)
E154- Indoor fan error
E221- Outdoor temperature sensor error (shorted or open)
E237- Condenser sensor error (shorted or open)
E251- Discharge sensor error
E101- No communication between indoor and outdoor units for 2 minutes
E102- Communication error received from outdoor unit
E202- 3-minute tracking error on outdoor unit
E201- Communication error after tracking due to non-matching quantity of installed indoor units
E108- Error due to repeated communication address
E109- Communication address not confirmed
E151- Error due to opened EEV (2nd detection)
E152- Error due to closed EEV (2nd detection)
E128- Evap-in sensor is loose
E129- Evap-out sensor is loose
E198- Thermal switch error (open)
E241- Condenser mid-sensor is loose
E554- Refrigerant leakage (2nd detection)
E450- Abnormally high temperature on condenser (2nd detection)
E451- Low pressure switch (2nd detection)
E416- Abnormally high discharge air temperature on outdoor unit (2nd detection)
E559- Indoor unit operation stopped due to unconfirmed error on outdoor unit
E425- Reverse phase detection error
E403- Compressor operation stop due to freeze detection(6th detection)
E301- High pressure sensor is loose
E306- Low pressure sensor is loose
E428- Outdoor unit compression ratio error
E413- Outdoor sump down_1 prevention control
E410- Compressor operation stopped due to low pressure sensor prevention control
E180- Simultaneous opening of cooling/heating MCU solenoid valve (1sst detection)
E181- Simultaneous opening of cooling/heating MCU solenoid valve (2nd detection)
E153- Float switch (2nd detection)
E162- EEPROM error
E163- EEPROM option error
E164- Incompatible indoor unit error