MRV Communications HOUSEHOLD MRV AE182FCAHA - Manual (Page 32)

List of troubles
List of displayed troubles on the remote controller
Trouble description
Ambient temperature sensor fault
Indoor unit gas pipe temperature sensor abnormal
Indoor unit and outdoor unit signal transmission abnormal
Faulty communication between indoor unit 846 chip and 808 chip
Indoor unit liquid pipe temperature sensor trouble
Indoor unit and remote controller communication abnormal
Trouble with outdoor unit
Displayed code
E1
E2
E3
E5
E6
E7
E9
List of indicated troubles with outdoor unit (when the remote controller indicates E9,
you may check the indoor unit main board LED1 or outdoor unit main board LED1
(AU242FHAHA), outdoor unit main board LED (ALARMA or ALARMB) (AU422FIA
HA
* AU422FIAIA).
Trouble description
Outdoor unit defrost temperature sensor abnormal
Outdoor unit ambient temperature sensor abnormal
Compressor suction temperature sensor abnormal
Compressor discharge temperature sensor abnormal
Outdoor unit AC overcurrent protection
Outdoor unit DC undervoltage protection
Outdoor unit power module overcurrent protection
Trouble with outdoor unit EEPROM
Compressor discharge gas too hot protection
Abnormal communication between outdoor unit 857 chip and 808 chip
Outdoor unit system pressure too high protection
LED flash times
1
2
3
4
6
7
9
10
11
12
13
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