1143W24E4.00 · EV3 200 Web
03/2021
| 31 |
7.5 EVAPORATOR FANS
The evaporator fan regulator is activated in the following conditions:
• The delay F3 has elapsed at the end of dripping;
• The temperature of the evaporator probe Pb3 is higher than the threshold F1 (if F0
=3,4);
• The fans are not deactivated during defrost F2 = 0;
• There is no dripping active d7.
7.5.1 Regulator operation
The evaporator fan regulator may be activated following a request from another regulator as follows:
•
Compressorrequest,toencourageproductionanddiffusionofcoolair(heatregulationfunction);
•
Defrostrequest,tocontrol/limitthediffusionofhotair;
•
Humidification/dehumidificationrequest,tospreadorlimitthediffusionofhumidity.
7.5.2 Operating mode
The evaporator fans operate according to parameter F0:
Par. Description
MU
Range
F0
Evaporator fan mode in normal operating mode.
With F0 = 0 it is possible to manage cycles by setting F11
,
F12.
0 = In cycles;
1
=AlwaysON;
2 = On with compressor ON;
3 = Thermostat controlled (F1 relative to temperature control);
4 = Thermostat controlled with compressor ON (F1 relative to temperature control).
---
0...4
Evaporator fan cycles with F11 > 0
ON
OFF
F11
F9
F12
ON
OFF
Pb3
Se F1
Se F1+F8
Fig. 32.
Operation of evaporator fans with
F11
> 0
7.5.3 Operation during defrost
Operation of the evaporator fans during defrost depends on F2.
Par. Description
MU
Range
F2 Evaporator fan mode during defrost. 0
=OFF;
1 = ON; 2
=Accordingto
F0.
---
0...2
7.5.4 Fan operation during dripping
Duringdripping,theevaporatorfansstayoffforthetimesetby
d7
.Afurtherdelayof
F3 may be set when the evaporator fans
areactivatedafterdripping.Inthiscase,thefansareactivatedafter
F3 has elapsed.
Par. Description
MU
Range
d7 Evaporator dripping time after defrost.
min
0...15
F3 Maximum time evaporator fans off after dripping.
min
0...15
