Panasonic CS-Z25VKEW Installation Instruction

113
18.4 Self-diagnosis Method
18.4.1 H11 (Indoor/Outdoor Abnormal Communication)
Malfunction Decision Conditions
 During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal
transmission is checked whether it is normal.
Malfunction Caused
 Faulty indoor unit PCB.
 Faulty outdoor unit PCB.
 Indoor unit-outdoor unit signal transmission error due to wiring error.
 Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the
indoor and outdoor units.
Troubleshooting
YES
YES
YES
NO
When abnormality indication starts again
Measure the AC voltage at terminal 1 & 2 of outdoor unit
terminal board
Is the measured voltage 230/240V?
● AC power supply abnormal fluctuation
● Defect in communication circuitry
of outdoor unit PCB
● Replace the PCB
●
Measure the DC voltage at terminal 2 & 3 (communication
Is the measured DC voltage fluctuate between 10~70V?
Measure the AC voltage at terminal 1 & 2 of indoor unit
Is the measured voltage 230/240V?
YES
Measure the DC voltage at terminal 2 & 3 of indoor unit
Is the measured DC voltage fluctuate between 10~70V?
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Caution
NO
NO
NO
terminals) of outdoor unit terminal board
(Value depend on multimeter accuracy)
terminal board
terminal board
Improper connection at terminals
●
Check indoor/outdoor connecting cable
indoor/outdoor
●
Improper connection at terminals
●
Check indoor/outdoor connecting cable
indoor/outdoor
●
Defect in receiver/transmitter module of
the communication circuitry in indoor
●
Replace the indoor unit PCB
unit PCB

Panasonic CS-Z25VKEW Specifications

General

AC input voltage	230 V
Design load (cooling)	2.5 kW
Annual energy consumption (cooling)	103 kWh
Hourly energy consumption (cooling)	- kWh
Design load (heating) (Warmer heating season)	- kW
Design load (heating) (Average heating season)	2.7 kW
Energy efficiency class (heating) (Colder heating season)	-
Energy efficiency class (heating) (Average heating season)	A+++
Annual energy consumption (heating) (Average heating season)	741 kWh
Type	Air conditioner indoor unit
Multi-split	No
Product color	White
Dehumidifying capacity	1.5 l/h
Air conditioner functions	Cooling, Dehumidifying, Heating
Cooling capacity in watts (max)	3200 W
Cooling capacity in watts (min)	850 W
Heating capacity in watts (max)	5000 W
Heating capacity in watts (min)	800 W
Cooling capacity in watts (nominal)	2500 W
Cooling energy efficiency (EER, W/W)	4.81
Heating energy efficiency (COP, W/W)	4.79
Seasonal efficiency rating (cooling) (SEER)	8.5
Seasonal efficiency rating (heating) (SCOP)	5.1
Heating capacity in watts (nominal) (Warmer heating season)	- W
Heating capacity in watts (nominal) (Average heating season)	3400 W
Indoor unit type	Wall-mountable
Indoor unit depth	194 mm
Indoor unit width	919 mm
Indoor unit height	295 mm
Indoor unit weight	10000 g
Indoor units quantity	1
Cooling airflow (indoor unit)	612 m³/h
Heating airflow (indoor unit)	672 m³/h
Indoor unit sound power level	55 dB
Indoor unit noise level (low speed)	19 dB
Indoor unit noise level (high speed)	39 dB
Wi-Fi	Yes
Outdoor unit noise level	- dB