3516526A02 Ed. 01
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Other defrost parameters
(They have an effect in standard and SELFDRIVE mode)
Drip time
It is set by parameter d9 and defines the time added at the end of defrost to allow the evacuation of the remaining
defrost water from the evaporator, during which time there is no cooling regulation.
Fan start-up delay
This is established through parameter F4 and allows for the possible drops left in the evaporator to freeze before the
fans activate, preventing them from being projected into the cold room. It also prevents heat being supplied to the
cold room due to defrost in the evaporator.
If defrost is cancelled before 1 minute has elapsed, the drip time (d9) is not applied and the fans are
activated without taking into account the start-up delay (F4).
If defrost is by air or is static, the drip time (d9) and fan start-up delay (F4) are deactivated.
Message displayed during defrost
This is established using parameter d2, and you can choose between displaying the real temperature captured by
sensor 1 (d2=0), showing the temperature captured by sensor 1 at the start of the defrost (d2=1), or displaying the
dEF (d2=2) message. Parameter d3 defines the time during which the aforementioned message will be displayed
once the drip time (d9) and fan stop time (F4) are complete.
Remote defrost
This function allows defrost of the unit to be activated using an external key, connecting it to one of the digital inputs
that must be configured as remote defrost (I10 or I20=5).
Defrost locking
This prevents defrost starting at unusual points by means of an external switch, which may be useful for ensuring that
the installation's load does not excessively increase, exceeding the permitted limits.
The external switch must be connected to one of the digital inputs, which should be configured as “Defrost locking”
(I10 or I20=6).
Defrosting in a second evaporator
This function allows for defrost to be controlled in a second evaporator, provided that defrost is by electric heat, by
air or is static. The same type of defrost should be used for the first and second evaporators.
This requires configuration of input D2/S4 as a 2nd evaporator sensor (l120=10). In the event of an error in the 2nd
evaporator sensor, defrost completes once the time defined in d1 has elapsed.
Electric defrosting
This requires configuration of relay AUX 2 as 2nd evaporator defrost (o10=4). Defrost begins simultaneously in
both evaporators. When the sensor of evaporator 1 reaches the temperature defined in d4, the DEF relay deac-
tivates, completing defrost of evaporator 1. Defrost of evaporator 2 is completed when the evaporator 2 sensor
reaches the temperature defined in d4. Drip time begins when both defrosts are complete.
Defrost by air
The fans of both evaporators are connected in parallel to the FAN relay. Defrost begins simultaneously in both
evaporators and does not complete until both probes reach the temperature defined in d4. Drip time subse-
quently begins.
Static defrost
Defrost begins simultaneously in both evaporators and does not complete until both probes reach the temper-
ature defined in d4. Drip time subsequently begins.
Summary of Contents for 16526A
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