Panasonic H 79 error code

What it means

Panasonic lists H 79 as Wireless LAN module write error. The network module is not writing data correctly.

Urgency

Likely causes

1. Wireless LAN module memory or firmware write has failed
2. Wireless LAN module lost power or connection during setup
3. Wireless LAN module connector or wiring is loose or damaged
4. Indoor control board or wireless module fault

Homeowner fix

Power cycle the indoor unit once and retry app setup only from normal controls. Do not open the indoor unit or remove the wireless module.

When to call a pro

Call an authorized Panasonic dealer if H 79 returns. Tell them Panasonic lists H 79 as Wireless LAN module write error.

Repair vs replace

Wireless module faults are usually repairable and do not justify replacing the whole system by themselves.

• Panasonic ClimaPure XZ Series 9,000 BTU R-32 208/230V (CS-XZ9AKUAW / CU-XZ9AKUAC)

  ClimaPure XZ Series

• Panasonic ClimaPure XZ Series 12,000 BTU R-32 208/230V (CS-XZ12AKUAW / CU-XZ12AKUAC)

  ClimaPure XZ Series

• Panasonic ClimaPure XZ Series 15,000 BTU R-32 208/230V (CS-XZ15AKUAW / CU-XZ15AKUAC)

  ClimaPure XZ Series

• Panasonic ClimaPure XZ Series 18,000 BTU R-32 208/230V (CS-XZ18AKUAW / CU-XZ18AKUAC)

  ClimaPure XZ Series

For your technician

Official Panasonic diagnostic display: H 79 - Wireless LAN module write error. Page context: Panasonic maps this display to the ClimaPure XZ Series line; source: Panasonic Operating Instructions Air Conditioner CS-XZ, CS-MXZ, CU-XZ, CU-xZxxABUC and CU-xZxxBBUC Series, English, ACXF55-35103; display convention: match the letter H and seventy nine marker exactly before comparing neighboring codes.

Which systems show it

ClimaPure XZ Series

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

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