Cooling Mode Operation - Panasonic CS-C18CKR Service Manual

CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR
8.2.

Cooling Mode Operation

Cooling in operation according to Remote Control setting.
Time Delay Safety Control (3 minutes)
• • • • When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
• • • • When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes.
7 minutes Time Save Control
• • • • The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.
Anti-Freezing Control
• • • • If the temperature of the indoor heat exchanger falls
continuously below 2°C for 4 minutes or more, the
compressor turns off to protect the indoor heat exchanger
from freezing. The fan speed setting remains the same.
• • • • Compressor will restart again when the indoor heat
exchanger temperature rises to 10°C (Recovery).
3 minutes waiting of Time Delay Safety Control is valid for
Cooling Operation.
Compressor Reverse Rotation Protection Control
• • • • If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and
indoor heat exchanger is 2.5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid)
! T = Intake air temperature - Indoor heat exchanger temperature
This is to protect reverse rotation of the compressor when there is a instantaneous power failure.
Anti-Dew Formation Control
• • • • Purpose is to prevent dew formation on indoor unit air discharge area.
• • • • When room temperature is constant (±1°C) the following conditions occur for 30 minutes continuously, anti-dew formation will
activate:
− − − − Indoor intake air temperature is more than 24°C and less than 30°C.
− − − − Remote Control setting temperature is less than 25°C.
− − − − Compressor is on.
− − − − Cooling operation mode.
− − − − Indoor Fan motor operate at Low fan speed or QLo.
• • • • This control is cancelled immediately when above condition is changed.
• • • • Anti-Dew formation is control by:
1. Lo fan speed
Lo fan is changed to Lo+ fan
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