Operation Control - Panasonic CU-J50DBE8 Service Manual

9.6.

Operation Control

9.6.1. Odour Cut Control
• Odour cut operation removes the odour generated at indoor heat exchanger by using drain water come out from indoor heat
exchanger.
• Press "Odour" button at remote control to enable odour cut operation.
• Odour cut operation starts when compressor or thermostat is on.
Thermostat &
Compressor ON/OFF
Time
Cooling
Soft Dry
9.6.2. Energy Saving
• During Operation, press "Economy" button at remote control to enable Energy Saving Operation.
• The air conditioner judges the stable condition, where the different between indoor suction temperature and setting temperature
is 1°C for 30 minutes and moderately shifts the set temperature in 0.5°C steps (Maximum 2°C) to control energy saving
operation.
• If temperature different is out of range, energy save operation will not start.
• Energy Save Operation is canceled by pressing the "Economy" button again.
9.6.3. Dew Form Prevention Control
• During cooling or soft dry operation, if outdoor temperature is less than 30ºC, and indoor fan speed is low or auto setting, indoor
heat exchanger temperature become lower, dew form prevention control start to prevention dew form at indoor discharge grille.
• When indoor pipe temperature decrease, the cooling capacity will be reduced and the louver angle will be fixed at certain angle.
9.6.4. Freeze Prevention Control
• After compressor starts operation for 4 minutes, the outdoor unit will stop its operation if indoor pipe temperature falls below 0ºC
for 6 minutes.
• After 3 minutes stops, compressor restarts operation if indoor pipe temperature is 6ºC or more.
• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid from
returning to the compressor.
9.6.5. Time Delay Safe Control
• The compressor will not start for three minutes after stop of operation.
9.6.6. Outdoor Fan Remaining Heat Removal Control
• When compressor stop, outdoor fan operates at High speed for 1 minute to remove the remaining heat.
Thermostat &
Compressor ON
40 sec. 50 sec. -
Off Lo Normal
Operation
Off Lo Lo
Energy save control time chart
Thermostat &
Compressor OFF
20 sec. 120 sec. 20 sec.
Lo Off Lo
Lo Off Lo
41
Thermostat &
Compressor ON
40 sec. 50 sec. -
Off Lo Normal
Operation
Off Lo Lo