PLUS 100 AB
Page 24
Rev. 01-08
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 (d2) is lower than
the temperature detected by the evaporator sensor. Defrosting ends when the end-of-
defrost temperature (d2) or maximum defrost time (d3) is reached.
HOT GAS DEFROSTING
Set parameter d1 =1 to manage the defrost cycle in inversion mode.
The compressor relay and defrost relay are activated throughout the defrost phase.
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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