Mitsubishi Electric CMB error codes
Codes
- 5201Error codeHigh-pressure sensor fault (63HS1): If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more. If the high pressure sensor detects 0.098MPa [14psi] or less just before the restart, the outdoor unit makes an error stop, and the error code "5201" will appear. During 3-minute antirestart mode, preliminary errors will be displayed on the LED displ | High-pressure sensor fault (Outdoor unit 63HS1/HBC controller PS): When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error codes "5201" and "5203" will appear. The unit will continue its operation by using other sensors as a backup.
- 5203Error codeIntermediate pressure sensor fault (HBC PS3): When a pressure sensor reading of 4.06 MPa [589 psi] or above or 0.098 Mpa [142psi] or below is detected, error codes "5201" or "5203" will appear. The unit will continue its operation by using other sensors as a backup.
- 5301Error codeDCCT sensor fault (Detail code 116): When the bus current less than 18 Apeak is detected at startup (6Hz) | ACCT sensor circuit fault (Detail code 117): When an error value is detected with the ACCT detection circuit just before the inverter starts | DCCT sensor circuit fault (Detail code 118): When an error value is detected with the DCCT detection circuit just before the inverter starts. | Faulty ACCT wiring (Detail code 120): Presence of target current cannot be detected during the self-diagnostic operation immediately before startup. (Detection of improperly mounted ACCT sensor) | DCL Current sensor circuit fault (Detail code 127): When an abnormal value is detected by the DCL current sensor detection circuit
- 5401Error codeTemperature sensor fault: A short-circuit or an open-circuit of the humidity sensor is detected during operation.
- 5701Error codeLoose float switch connector: Detection of the disconnected float switch (open-phase condition) during operation
- 6201Error codeRemote controller board fault (nonvolatile memory error): This error is detected when the data cannot be read out from the built-in nonvolatile memory on the remote controller.
- 6202Error codeRemote controller board fault (clock IC error): This error is detected when the built-in clock on the remote controller is not properly functioning.
- 6600Error codeMultiple address error Transmission from units with the same address is detected. Note: The address/attribute shown on remote controller indicates the controller which has detected error.
- 6601Error codePolarity setting error: The error detected when transmission processor cannot distinguish the polarities of the M-NET transmission line.
- 6602Error codeTransmission processor hardware error: Although "0" was surely transmitted by the transmission processor, "1" is displayed on the transmission line. The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6603Error codeTransmission line bus busy error: Generated error when the command cannot be transmitted for 4-10 minutes in a row due to bus-busy Generated error when the command cannot be transmitted to the transmission line for 4-10 minutes in a row due to noise Detail code 001: Transmission Bus-Busy error in centralized control system Detail code 002: Transmission Bus-Busy error in indoor unit system The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6606Error codeCommunication error between device and transmission processors: Communication error between device processor on circuit board and transmission processor or M-NET processor Detail code 003: Communication error between device processor on circuit board and M-NET processor The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6607Error codeNo System Generating compounit sition 1 Outdoor unit system 2 BC controller (BC) refrigerant Single 3 Indoor unit (1) 4 Remote controller (RC): ACK error When transmission Note: Display of Detecting address trouble method Remote No reply 1) (OC) controller (ACK) at 2) (RC) BC transmission to OC 3) 4) Remote No reply 1) controller (ACK) at IC (RC) transmis2) sion to BC 3) 4) Remote No reply 1) (IC) controller (ACK) at (RC) RC 2) transmission to IC 3) 4) 5) Remote No reply 1) controller (ACK) at IC 2) (RC) transmis3) sion to RC 4) | No (continued) System Generating compounit sition 1 2 3 refrigerants plural using system operation Group 4 (2): ACK error When interval Display of Detecting address trouble method Outdoor Remote No reply As unit (OC) control- (ACK) at ler (RC) BC transmission to OC BC Remote No replay As controller control- (ACK) at IC (BC) ler (RC) transmission to BC Indoor Remote No reply 1) unit (IC) control- (ACK) at ler (RC) RC 2) transmission to IC 3) 4) 5) For ed ed. Remote Remote No reply 1) controller control- (ACK) at IC (RC) ler (RC) transmis2) sion to RC 3) 4) 5) At once, | No (continued) System Generating compounit sition 1 Outdoor unit 2 BC controller (BC) 3 Indoor unit (MELANS) controller system with system 4 Remote controller Connecting (RC) (3): ACK error When interval Note: Display of Detecting address trouble method Remote No reply As (OC) controller (ACK) at (RC) BC transmission to OC Remote No reply Same controller (ACK) at frigerants. (RC) RC t
- 6608Error codeNo response error: When no response command is returned although acknowledgement (ACK) is received after transmission, an error is detected. When the data is transmitted 10 times in a row with 3 seconds interval, an error is detected on the transmission side. The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6831Error codeMA controller signal reception error (No signal reception): Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 3 minutes.
- 6832Error codeMA remote controller signal transmission error (Synchronization error): MA remote controller and the indoor unit is not done properly. Failure to detect opening in the transmission path and unable to send signals Indoor unit : 3 minutes Remote controller : 6 seconds
- 6833Error codeMA remote controller signal transmission error (Hardware error): Communication between the MA remote controller and the indoor unit is not done properly. An error occurs when the transmitted data and the received data differ for 30 times in a row.
- 6834Error codeMA controller signal reception error (Start bit detection error): Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 2 minutes.
- 7100Error codeTotal capacity error Total capacity of indoor units in the same refrigerant system exceeds limitations. Trouble source: Outdoor unit
- 7101Error codeCapacity code error Error display at erroneous connection of Indoor unit of which model name can not be connected. Trouble source : Heat source unit Indoor unit
- 7102Error codeConnected unit count over Number of units connected in the same refrigerant system exceeds limitations. Trouble source: Outdoor unit | Connected unit count over
- 7105Error codeAddress setting error • Erroneous setting of OC unit address • Erroneous setting of BC controller address Trouble source : Heat source unit BC controller
- 7107Error codePort setting error: The port with wrong number is connected to the indoor unit.The model total connected to the port is greater than the specification.
- 7111Error codeRemote control sensor error Error not providing the temperature designed to remote controller sensor. Trouble source : Indoor unit
- 7117Error codeModel setting error 2.
- 7130Error codeIncompatible unit combination 2.