Panasonic CS-E12NKEW Service Manual

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16.4.22 F91 (Refrigeration Cycle Abnormality)
Malfunction Decision Conditions
 During cooling, compressor frequency = Fcmax.
 During heating, compressor frequency > Fhrated.
 During cooling and heating operation, running current: 0.65A < I < 1.65A.
 During cooling, indoor intake - indoor pipe < 4°C.
 During heating, indoor pipe - indoor intake < 5°C.
Multi Models Only
 Gas shortage detection 1: A gas shortage is detected by checking the CT-detected input current value
and the compressor running frequency. During startup and operating of cooling and heating, input
current < 8.78/256 (A/Hz) x compressor running frequency + 0.25.
 Gas shortage detection 2: A gas shortage is detected by checking the difference between indoor pipe
temperature and indoor intake air temperature during cooling and heating.
Malfunction Caused
 Faulty indoor intake air or pipe temperature sensor.
 2/3 way valve closed.
 Refrigerant shortage (refrigerant leakage).
 Clogged expansion valve or strainer.
 Faulty outdoor unit.
 Poor compression of compressor.
Troubleshooting

Panasonic CS-E12NKEW Specifications

General

Type	Air conditioner indoor unit
Built-in display	No
Remotely operated	Yes
Cooling capacity (max)	- BTU/h
Air conditioner functions	cooling, heating
Cooling capacity in watts (max)	3500 W
Heating capacity in watts (max)	4400 W
Cooling energy efficiency (EER, W/W)	3.87
Heating energy efficiency (COP, W/W)	4.04
Indoor unit type	Wall-mountable
Indoor units quantity	1
Outdoor units quantity	0
Noise level (low speed)	20 dB
Noise level (high speed)	42 dB
Noise level (medium speed)	28 dB
Power requirements	AC 230 V

Weight and Dimensions

Dimensions (WxDxH)	870 x 214 x 290 mm