4.3.- Fan control
(only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control
(only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
ON
ON
Fan control
SP
F0
(probe 2)
F0+F1
(probe 2)
Only if F2=1
SP+C1
OFF
OFF
COOL
FAN
Time
4.3.- Fan control
(only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control
(only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
4.3.- Fan control
(only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control
(only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
15
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