Panasonic CS-E7NKEW User Manual

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16.4.28 F99 (Output Over Current Detection)
Malfunction Decision Conditions
 During operation of cooling and heating, when an output over-current (DC peak current value at IPM Prevention
Control) is detected by checking the current that flows in the inverter DC peak sensing circuitry.
Malfunction Caused
 Faulty outdoor unit PCB
 Faulty compressor
Troubleshooting
 Checking the power transistor
 Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
 If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using
the tester.
 For the UVW, make measurement at the Faston terminal on the board of the relay connector.
Tester’s negative terminal Power transistor (+) UVW Power transistor (-) UVW
Tester’s positive terminal UVW Power transistor (+) UVW Power transistor (-)
Normal resistance Several kΩ to several MΩ
Abnormal resistance 0 or ∞

Panasonic CS-E7NKEW Specifications

General

Indoor unit type	Wall-mountable
Indoor units quantity	1
Indoor unit dimensions (WxDxH)	870 x 214 x 290 mm
Timer	Yes
Built-in display	No
Cooling capacity (max)	- BTU/h
Air conditioner functions	cooling, heating
Cooling capacity in watts (max)	2050 W
Heating capacity in watts (max)	2800 W
Cooling energy efficiency (EER, W/W)	4.36
Heating energy efficiency (COP, W/W)	4.41
Outdoor units quantity	0
Noise level (low speed)	20 dB
Noise level (high speed)	37 dB
Noise level (medium speed)	24 dB
Power requirements	AC 230 V