Panasonic CU-PW18MKD [9/44] Troubleshooting

ENGLISH

The following symptoms do not indicate malfunction.

SYMPTOM

CAUSE

Mist emerges from indoor unit. ► • Condensation effect due to cooling process.

Water ﬂ owing sound during operation. ► • Refrigerant ﬂ ow inside the unit.

The room has a peculiar odour. ► • This may be due to damp smell emitted by the wall,

carpet, furniture or clothing.

Indoor fan stops occasionally during automatic fan speed

setting.

► • This helps to remove the surrounding odours.

Operation is delayed a few minutes after restart. ► • The delay is a protection to the unit’s compressor.

Outdoor unit emits water/steam. ► • Condensation or evaporation occurs on pipes.

Timer indicator is always on. ► • The timer setting repeats daily once set.

Power Indicator blinks during operation and the indoor fan

is stopped.

► • The unit is in defrost mode, and the melted frost is

drained from the outdoor unit.

Indoor fan stops occasionally during heating operation. ► • To avoid unintended cooling effect.

Cracking sound during operation. ► • Changes of temperature cause the expansion/contraction

of the unit.

Check the following before calling for servicing.

SYMPTOM

CHECK

Heating/Cooling operation is not working efﬁ ciently. ► • Set the temperature correctly.

• Close all doors and windows.

• Clean or replace the ﬁ lters.

• Clear any obstruction at the air inlet and air outlet vents.

Noisy during operation. ► • Check if the unit has been installed at an incline.

• Close the front panel properly.

Remote control does not work.

(Display is dim or transmission signal is weak.)

► • Insert the batteries correctly.

• Replace weak batteries.

The unit does not work. ► • Check if the circuit breaker is tripped.

• Check if timers have been set.

The unit does not receive the signal from the remote

control.

► • Make sure the receiver not obstructed.

• Certain ﬂ uorescent lights may interfere with signal

transmitter. Please consult authorized dealer.

TROUBLESHOOTING