Brand: Panasonic
Category: Air Conditioner
Document Type: Manual
Language: EN
Manual for CS-E9DKEW CU-E9DKE / CS-E12DKEW CU-E12DKE
Uploaded: Nov. 21, 2025, 6:54 p.m.
Warranty Information
All parts are supplied from PHAAM, Malaysia (Vendor Code: 061). 'O' marked parts are recommended to be kept in stock.
The manual covers product specifications, dimensions, refrigeration cycle diagrams, block diagrams, wiring diagrams, operation details, installation instructions, and servicing information for the Panasonic CS-E9DKEW CU-E9DKE and CS-E12DKEW CU-E12DKE air conditioners. It details troubleshooting, breakdown self-diagnosis, and component replacement procedures, along with technical data and performance charts.
Troubleshooting and error codes
| Diagnosis display | Abnormality / Protection control | Abnormality Judgement | Emergency operation | Primary location to verify |
|---|---|---|---|---|
| H11 | Indoor / outdoor abnormal communication | > 1 min after starting operation | Indoor fan operation only | • Internal / external cable connections • Indoor / Outdoor PCB |
| H12 | Connection capability rank abnormal | Continue for 5 sec. | — | - |
| H14 | Indoor intake air temperature sensor abnormality | Continue for 5 sec. | — | • Intake air temperature sensor (detective or disconnected) |
| H15 | Outdoor compressor temperature sensor abnormality | Continue for 5 sec. | — | • Compressor temperature sensor (detective or disconnected) |
| H16 | Outdoor Current Transformer open circuit | — | — | • Outdoor PCB |
| H19 | Indoor fan motor mechanism lock | — | — | • IPM (Power transistor) module • Indoor PCB • Fan motor |
| H23 | Indoor heat exchanger temperature sensor abnormality | Continue for 5 sec. | O (Cooling only) | • Heat exchanger temperature sensor (defective or disconnected) |
| H26 | Ionizer breakdown | — | — | • Ionizer |
| H27 | Outdoor air temperature sensor abnormality | Continue for 5 sec. | O | • Outdoor temperature sensor (defective or disconnected) |
| H28 | Outdoor heat exchanger temperature sensor abnormality | Continue for 5 sec. | O | • Outdoor heat exchanger temperature sensor (defective or disconnected) |
| H33 | Indoor/Outdoor wrong connection | — | — | • Indoor/Outdoor supply voltage |
| H38 | Indoor / outdoor mismatch (brand code) | — | — | - |
| H98 | Indoor high pressure protection | — | — | • Air filter dirty |
| H99 | Indoor heat exchanger anti-freezing protection | — | — | • Air circulation short circuit • Insufficient refrigerant |
| F11 | Cooling / Heating cycle changeover abnormality | 4 times occurance within 30 minutes | — | • Air filter dirty • 4-way valve • V-coil • Voltage at PFC |
| F90 | PFC control | 4 times occurance within 10 minutes | — | - |
| F91 | Refrigeration cycle abnormality | 2 times occurance within 20 minutes | — | • No refrigerant (3-way valve is closed) |
| F93 | Compressor rotation failure | 2 times occurance within 20 minutes | — | • Compressor |
| F95 | Cool high pressure protection | 4 times occurance within 20 minutes | — | • Outdoor refrigerant circuit |
| F96 | IPM (power transistor) overheating protection | 4 times occurance within 10 minutes | — | • Excess refrigerant • Improper heat radiation • IPM (Power transistor) |
| F97 | Outdoor compressor overheating protection | 4 times occurance within 10 minutes | — | • Insufficient refrigerant • Compressor |
| F98 | Total running current protection | 3 times occurance within 20 minutes | — | • Excess refrigerant • Improper heat radiation • Compressor |
| F99 | Outdoor Direct Current (DC) peak detection | 7 times occurance continuously | — | • Outdoor PCB • IPM (Power transistor) • Compressor |