Service Check Function SiUS341615E173 Service Diagnosis2.4 Error Codes - Sub CodesIf an error code like the one shown below is displayed when the navigation remote controller (BRC1E series) is inuse, make a detailed diagnosis or a diagnosis of the relevant unit.2.4.1 Indoor Unit2.4.2 Outdoor UnitRefer to page 131.Error code TroubleshootingDescription of error Description of diagnosisA0 - 01 External protection device abnormality Refer to page 175.A6 - 01 Fan motor locked A locked fan motor current has been detected.Turn the fan by hand to check for the connection of connectors.A6 - 10 Fan overcurrent error A fan motor overcurrent has been detected.Check for the connection of the connector between the fan motorand the fan PCB. If the connection is normal, replace the fanmotor. If this still cannot solve the error, replace the fan PCB.A6 - 11 Fan position detection error An error in the detection of position of the fan motor. Check for theconnection of the connector between the fan motor and the fanPCB. If the connection is normal, replace the fan motor. If this stillcannot solve the error, replace the fan PCB.A6 - 20 Indoor fan motor status abnormality Refer to page 188.A6 - 21 Indoor fan motor insufficient airflow abnormality Refer to page 189.A8 - 01 Power supply voltage error Check for the input voltage of the fan motor.A9 - 01 Electronic expansion valve error There is an error in the electronic expansion valve coil or aconnector disconnected.A9 - 02 Refrigerant leakage detection error Refrigerant leaks even if the electronic expansion valve is closed.Replace the electronic expansion valve.AH - 03 Transmission error (between the self-cleaningdecoration panel and the indoor unit)(when the self-cleaning decoration panel is mounted)Check for the connection of the harness connector between thepanel PCB and the indoor unit PCB.AH - 04 Dust detection sensor error(when the self-cleaning decoration panel is mounted) Check for the connections of the connector X12A on the panelPCB and the connectors X18A and X19A on the sensor PCB.AH - 05 Dust collection sign error(when the self-cleaning decoration panel is mounted) Check for clogging with dust at the dust collection port as well as inthe brush unit, S-shaped pipe, and dust box. Furthermore, check forany stains of the light receiving and emitting parts of the infrared unit.AH - 06 Air filter rotation error(when the self-cleaning decoration panel is mounted) Check for anything getting in the way of rotating the filter (e.g. thefilter comes off or the drive gear is clogged with foreign matter).AH - 07 Damper rotation error(when the self-cleaning decoration panel is mounted) The damper does not rotate normally. Check for any foreignmatter around the damper and for the operation of the gear andlimit switch.AH - 08 Filter self-cleaning operation error(when the self-cleaning decoration panel is mounted) The unit has not yet completed the filter self-cleaning operationeven after the lapse of specified period of time. Check for anyexternal noise, etc.AH - 09 Filter self-cleaning operation start disabled error(when the self-cleaning decoration panel is mounted) The unit has been put into a state in which the filter self-cleaningoperation is disabled. Check the unit for the operating conditions.AJ - 01 Capacity setting error There is an error in the capacity setting of the indoor unit PCB.AJ - 02 Electronic expansion valve setting error There is a fault in the setting of the gear type electronic expansionvalve/direct acting type electronic expansion valve.C1 - 01 Transmission abnormality between indoor unitPCB and fan PCB Check for the conditions of transmission between the indoor unitPCB and the fan PCB.C1 - 07 Blower motor communication error Refer to page 199.C6 - 01 Defective combination of indoor unit PCB andthe fan PCBBlower motor HP mismatchA combination of indoor unit PCB and the fan PCB is defective.Check whether the capacity setting adaptor is correct and thetype of the fan PCB is correct.C6 - 02 Indoor blower does not have requiredparameters to function Refer to page 203.U4 - 01 Indoor-outdoor transmission error Refer to the U4 flow chart.UA - 13 Refrigerant type error The type of refrigerant used for the indoor unit is different fromthat used for the outdoor unit.UA - 15 Not applicable for self-cleaning decorationpanel [when the self-cleaning decoration panelis mounted]An outdoor unit is not applicable for the self-cleaning decorationpanel is connected.UA - 17 Incorrect electric heater capacity setting Refer to page 283.
