Panasonic CU3E18LBE - Manual (Page 8)

8
TROUBLESHOOTING
The following symptoms do not indicate malfunction. The following symptoms do not indicate malfunction.
SYMPTOM SYMPTOM CAUSE 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.
Airfl ow continues even after operation has stopped. ► • Extraction of remaining heat from the indoor unit
(maximum 30 seconds).
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 HEAT mode with no warm air
supply (and louver is closed).
► • The unit is in defrost mode (and AIR SWING is set to
AUTO).
Indoor fan stops occasionally during heating operation. ► • To avoid unintended cooling effect.
Power indicator blinks before the unit is switched on. ► • This is a preliminary step in preparation for the operation
when the ON timer has been set.
Cracking sound during operation. ► • Changes of temperature cause the expansion/
contraction of the unit.
Check the following before calling for servicing. Check the following before calling for servicing.
SYMPTOM SYMPTOM CHECK 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.
Patrol sensor or e-ion indicator on the indoor unit is
blinking.
► • Stop Patrol or e-ion operation then restart. If the patrol
sensor or e-ion indicator still blinking, please consult
authorized dealer.