MRV Communications AE072FCAKA, AE212FCAKA Malfunction, Indoor unit malfunction display code

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Malfunction

Indoor unit malfunction display code

Indoor unit malfunction

Display code

 

Float switch or water motor abnormal

E0

 

Outdoor unit abnormal

E1

 

Setting running mode is different with outdoor

E2

running mode

 

 

Liquid temperature sensor is abnormal

E3

 

Gas temperature sensor is abnormal

E4

 

 

The communication between indoor 846 chip and

E5

 

communicationchipis abnormal

 

 

The communication with electronic expansion box

E7

is abnormal

 

 

The communication between the wire remote

E8

controller and indoor unit control board is abnormal

 

 

The communication between indoor and outdoor unit

E9

is abnormal

 

 

 

 

 

Water temp. sensor is abnormal

EB

 

 

 

Outdoor unit malfunction display code

(When the wire remote controller display E1,can check the indoor unit control board LED1 or the outdoor unit control board LED1 Outdoor unit control board LED (ALARMA or ALARMB)).

Outdoor unit malfunction

LED flashing times

 

Outdoor unit defrost temp. sensor is abnormal

flashing once

 

Outdoor unit environment temp. sensor is abnormal

flashing twice

 

 

Outdoor unit suction temp. sensor is abnormal

flashing 3 times

 

Outdoor unit discharge temp. sensor is abnormal

flashing 4times

 

 

 

 

Outdoor unit AC over-current protection

flashing 6times

 

Outdoor unit DC voltage is insufficient protection

flashing 7times

IPM protection

flashing9times

Outdoor unit EEPROM abnormal

flashing 10times

 

Compressor Discharge temperature overheat

flashing 11times

protection

 

 

The communication between outdoor unit 857 and

flashing 12times

communication chipis abnormal

 

 

 

 

 

Outdoor unit system over-high pressure protection

flashing 13 times

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Contents Ceilingconcealedtypeairconditionerindoorunit ContentsPage DB C AE072FCAKA AE242FCAKA Fig1 Calibration of clock Remote controller Operation of remote controller 20 1.ON/OFF button Clock set Important Points of Safety Smell etc. occurs, stop running Important Points of Safety Recommendations Operating Instructions Timer OperationTimer ON-OFF Sleep Function Health Function Following cases are not troubles Trouble ShootingSystem couldnt start Is power on/off switched on? Poor cooling When Fault OccursPoor cooling or heating Information about application Installation Precautions Electrical requirements Installing toolsFigure showing installation dimensions unitmm Installation ProcedureInstallation of indoor unit Transitive air duct New concrete slab Remove upper cover of wire controller Installation of remote controllerInstallation of receive display Requirements Drain pipePipe cutting and expanding Pipe expansion dimensions as followsRefrigerant piping Open all valves Ring terminal connection method Electric wiringField setting Outdoor unit malfunction display code MalfunctionIndoor unit malfunction display code Outdoor unit malfunction Indoor unit malfunction