Error code

Mitsubishi Electric PFD 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

System composition system refrigerant Single (1): No ACK error Generating Display of Detecting unit address trouble method 1 Outdoor Remote No reply unit (OC) controller (ACK) at (RC) IC transmission to OC 2 Indoor Remote No reply unit (IC) controller (ACK) at (RC) RC transmission to IC 3 Remote Remote No reply controller controller (ACK) at IC (RC) (RC) transmission to RC | (continued) System composition refrigerants plural using system operation Group (2): No ACK error Generating Display of Detecting unit address trouble method 1 Outdoor Remote No reply unit (OC) control- (ACK) at ler (RC) BC transmission to OC 2 Indoor Remote No reply unit (IC) control- (ACK) at ler (RC) RC transmission to IC 3 Remote Remote No reply controller control- (ACK) at IC (RC) ler (RC) transmission to RC | (continued) System composition (MELANS) controller system with system Connecting (3): No ACK error Generating Display of Detecting unit address trouble method 1 Outdoor Remote No reply unit (OC) controller (ACK) at (RC) IC transmission to OC 2 Indoor Remote No reply unit (IC) controller (ACK) at (RC) transmission of SC to IC 3 Remote Remote No reply controller controller (ACK) at (RC) (RC) transmission of IC to RC No reply (ACK) at transmission of MELANS to RC | (continued) System composition (MELANS) controller system with system Connecting (3) system with relation No: No ACK error Generating Display of Detecting unit address trouble method 5 System Remote No reply controller controller (ACK)

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Possible causes

When no ACK signal is detected in 6 continuous transmission side controller, the transmission side Note: The address/attribute shown on remote not providing the answer (ACK). Cause (1) Poor contact of transmission line of OC. (2) Damping of transmission line voltage/signal by acceptable range of transmission wiring exceeded. Farthest : Less than 200m Remote controller wiring : Less than 10m (3) Erroneous sizing of transmission line (Not within the range below). Wire diameter : 1.25mm2 or more (4) Faulty control circuit board of OC. (1) When IC unit address is changed or modified during operation. (2) Faulty or slipping off of transmission wiring of IC. (3) Slipping off of IC unit connector (CN2M). (4) Faulty IC unit controller. (5) Faulty remote controller. (1) Faulty transmission wiring at IC unit side. (2) Faulty transmission wiring of RC. (3) When remote controller address is changed or modified during operation. (4) Faulty remote controller. Meaning, detecting method When no ACK signal is detected in 6 continuous interval by transmission side controller, the transmission Note: The address/attribute shown on remote controller not providing the answer (ACK). As same that for single refrigerant system. (1) Cause of 1) ~ 5) of “Cause for single refrigerant system”. (2) Slipping off or short circuit of transmission line of OC terminal block for centralized control (TB7). (3) Shut down of OC unit power source of one re-frigerant system. (4) Neglecting insertion of OC unit power

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.