Error code

Mitsubishi Electric CMB code 6607

For your safety

This fault is rated high and involves an area that affects personal safety. No remote repair or do-it-yourself instructions are given; do not use the appliance or try to open or repair it.

Hazard area: mains voltage and refrigerant gas circuit

Do not use the appliance and call an authorised service. If there is a risk to life, move to a safe place and see the emergency numbers.

The emergency numbers here are for Turkey. If you are outside Turkey, call your local emergency number.

All emergency numbers and province details

No approved translation for this record yet; showing the original text.

Meaning

No 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

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Possible causes

no ACK signal is detected in 6 continuous side controller, the transmission The address/attribute shown on not providing the answer (ACK). Cause Poor contact of transmission line of OC Damping of transmission line voltage/signal by acceptable range of transmission exceeded. Farthest : Less than Remote controller wiring : Less than Erroneous sizing of transmission line within the range below). Wire diameter : 1.25mm2 or more Faulty control circuit board of OC. When Fresh Master address is changed modified during operation. Faulty or slipping off of transmission wiring BC controller. Slipping off of BC unit connector (CN02). Faulty BC controller circuit board. When IC unit address is changed or modified during operation. Faulty or slipping off of transmission wiring IC. Slipping off of IC unit connector (CN2M). Faulty IC unit controller. Faulty remote controller. Faulty transmission wiring at IC unit side. Faulty transmission wiring of RC. When remote controller address is changed or modified during operation. Faulty remote controller. Meaning, detecting method no ACK signal is detected in 6 continuous by transmission side controller, Note: The address/attribute shown controller not providing the same that for single refrigerant system. Cause of 1) ~ 5) of “Cause for single ant system”. Slipping off or short circuit of transmission of OC terminal block for centralized (TB7). Shut down of OC unit power source re-frigerant system. Neglecting insertion of OC unit power connector (

Solution

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.