TROUBLESHOOTING (BEFORE CALLING FOR SERVICE). Panasonic CU-3KE19NBU, CS-MKE7NKU, CU-4KE24NBU, CS-MKE9NKU, CS-MKE12NKU, CU-4KE31NBU

TROUBLESHOOTING (BEFORE CALLING FOR

SERVICE)

If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center.

Air conditioner does not run at all.

1. Power failure.

2. Leakage circuit breaker tripped.

3. Line voltage is too low.

4. Batteries in remote controller have run down.

Trouble in system.

OPERATION lamp blinks and air conditioner does not operate.

Compressor runs but soon stops.

Obstruction in front of condenser coil.

(Outdoor Unit)

Poor cooling (or heating) performance.

1. Dirty or clogged air filter.

2. Heat source or many people in room.

3. Doors and/or windows are open.

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

1. Restore power.

2. Contact service center.

3. Consult your electrician or dealer.

4. Replace batteries.

Contact service center.

Remove obstruction.

1. Clean air filter to improve airflow.

2. Eliminate heat source if possible.

4. Obstacle near air intake or air discharge port.

5. Thermostat is set too high for cooling (or too low for heating).

6. (Outdoor temperature is too low for heating.)

In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur.

The use of cellular phones near the air conditioner may cause disturbance to its normal operation.

3. Shut them to keep the heat (or cold) out.

4. Remove it to ensure good airflow.

5. Set the temperature lower (or higher).

6. (Consult your dealer or try to use another heat appliance.)

This is normal, and the sound will soon disappear.

1. Turn off the power then restart the air conditioner after a while.

2. Consult your dealer.

OPERATING RANGE

The air conditioner is operable within the temperature ranges as listed below:

Temperature Indoor air temperature

COOLING

HEATING

Max.

Min.

Max.

Min.

95 °F DB / 71 °F WB

67 °F DB / 57 °F WB

80 °F DB / 67 °F WB

– DB / – WB

Outdoor air temperature

115 °F DB

14 °F DB

75 °F DB / 65 °F WB

– DB / 0 °F WB

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