PLUS 200 2 PLT
Page 20
Rev. 02-06
MANUALE D’USO E MANUTENZIONE
MANUAL DEFROSTING
To defrost just press the dedicated key (see section 5.2) to activate the elements relay.
Defrosting will not take place if the end-of-defrost temperature setting (d21 or d22) is lower
than the temperature detected by the evaporator sensor. Defrosting ends when the end-of-
defrost temperature (d21 or d22) or maximum defrost time (d31 or d32) is reached.
Manual defrosting is possible even if real time clock defrosting is set.
HOT GAS DEFROSTING
Set parameter d1 =1 to manage defrost in cycle inversion mode.
The compressor relay and defrost relay are activated throughout the defrost phase. During
dripping (d7) the compressor shuts down but the defrost relay remains activated.
To ensure proper control of the system the installer must use the defrost output: this must
allow opening of the cycle inversion solenoid valve and closure of the liquid solenoid valve.
For capillary systems (without thermostat valve) it is only necessary to control the cycle
inversion solenoid valve via the defrost relay control.
MODIFYING DATE AND TIME
To change date and time settings just modify the values as per the parameter setting
procedure described in section 5.9 of this manual.
CHAP. 5 - Parameter programming
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