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Panasonic CU-XKU24XKT device hub

Use this device hub to troubleshoot Panasonic CU-XKU24XKT (Air Conditioner). Start with the most common codes and compare the published fix paths before opening parts.

Air ConditionerCU SeriesH99 H98 H85 H79

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Fix pages

55

Error codes

42

Last updated

Apr 17, 2026

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Jump to common codes8 Open the full code directory42

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4 troubleshooting themes

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55 published fix pages

Most common error codes

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Panasonic CU-XKU24XKT error code H99 means indoor operating unit freeze protection. This guide explains the li

Panasonic CU-XKU24XKT error code H98 means indoor high pressure protection. This guide explains the likely cau

Panasonic CU-XKU24XKT error code H85 means abnormal communication between indoor and wireless LAN module. This

Panasonic CU-XKU24XKT error code H79 means wireless LAN module write error. This guide explains the likely cau

Panasonic CU-XKU24XKT error code H72 means abnormality tank temperature sensor. This guide explains the likely

Panasonic CU-XKU24XKT error code H70 means light sensor abnormality. This guide explains the likely causes, th

Panasonic CU-XKU24XKT error code H67 means nanoe abnormality. This guide explains the likely causes, the safes

Panasonic CU-XKU24XKT error code H64 means outdoor high pressure sensor abnormality. This guide explains the l

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Common troubleshooting themes

These patterns are derived from the currently published fixes for this model and help you pick the right route faster.

Doors and locks

Temperature and heating

Sensors and readings

Motors and moving parts

Recently updated fixes

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Air ConditionerH99

Panasonic CU-XKU24XKT Error Code H99

Panasonic CU-XKU24XKT error code H99 means indoor operating unit freeze protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH99

Panasonic CU-XKU24XKT Error Code H99

Panasonic CU-XKU24XKT error code H99 means indoor operating unit freeze protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH98

Panasonic CU-XKU24XKT Error Code H98

Panasonic CU-XKU24XKT error code H98 means indoor high pressure protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH98

Panasonic CU-XKU24XKT Error Code H98

Panasonic CU-XKU24XKT error code H98 means indoor high pressure protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH97

Panasonic CU-XKU24XKT Error Code H97

Panasonic CU-XKU24XKT error code H97 means outdoor fan motor mechanism lock. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH85

Panasonic CU-XKU24XKT Error Code H85

Panasonic CU-XKU24XKT error code H85 means abnormal communication between indoor and wireless LAN module. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH85

Panasonic CU-XKU24XKT Error Code H85

Panasonic CU-XKU24XKT error code H85 means abnormal communication between indoor and wireless LAN module. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air ConditionerH79

Panasonic CU-XKU24XKT Error Code H79

Panasonic CU-XKU24XKT error code H79 means wireless LAN module write error. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

All error codes

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Air Conditioner

Panasonic CU-XKU24XKT error code F11 means 4-way valve switching abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code F18 means dry circuit blocked abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code F87 means control box overheat protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code F90 means pFC circuit protection or system/compressor microcomputer communication error. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code F94 means compressor discharge pressure protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code F99 means outdoor direct current (DC) peak detection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H12 means indoor unit capacity unmatched. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H16 means outdoor current transformer abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H17 means outdoor suction temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H21 means indoor float switch operation abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H23 means indoor heat exchanger temperature sensor 1 abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H24 means indoor heat exchanger temperature sensor 2 abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H25 means indoor ion device abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H26 means minus ION abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H27 means outdoor air temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H28 means outdoor heat exchanger temperature sensor 1 abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H30 means outdoor discharge pipe temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H31 means abnormal swimming pool sensor. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H32 means outdoor heat exchanger temperature sensor 2 abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H33 means indoor/outdoor misconnection abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H34 means outdoor heat sink temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H35 means indoor/outdoor water adverse current abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H36 means outdoor gas pipe temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H37 means outdoor liquid pipe temperature sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H38 means indoor/outdoor mismatch (brand code). This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H39 means abnormal indoor operating unit or standby units. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H41 means abnormal wiring or piping connection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H50 means ventilation fan motor locked. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H51 means ventilation fan motor locked. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H52 means left-right limit switch fixing abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H58 means indoor gas sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H59 means eco sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H64 means outdoor high pressure sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H67 means nanoe abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H70 means light sensor abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H71 means dC cooling fan inside control board abnormality. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H72 means abnormality tank temperature sensor. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H79 means wireless LAN module write error. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H85 means abnormal communication between indoor and wireless LAN module. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H97 means outdoor fan motor mechanism lock. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H98 means indoor high pressure protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

Air Conditioner

Panasonic CU-XKU24XKT error code H99 means indoor operating unit freeze protection. This guide explains the likely causes, the safest first checks, and when support or service is the better next step.

About this device hub

If your device shows an error code, start with the matching fix page. When a code returns repeatedly, it often points to an underlying cause (temperature, power delivery, sensors, locks, or wear).

Always follow basic safety: unplug before opening anything, and stop if you smell burning or see damage.

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