Carel iJW handleiding
Handleiding
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ENG
iJW +0300103EN rel. 1.1 - 31.03.2025
Index
10.8 Refrigerant leak alarm rSF
The iJW controller manages an algorithm that checks if the temperature decreases after the compressor is switched on; if the
temperature does not decrease suffi ciently, the controller attempts to perform a number of defrosts. If even after defrosting
the temperature still does not fall, it is assumed that there has been a refrigerant leak and manual-reset alarm rSF is generated,
which stops the unit.
Code Description Def. Min Max UOM User User terminal
d20 Sampling time for alarm rSF 0 0 240 min S NO
d16 Time with no temperature decrease before starting defrost 30 Add 240 min S NO
d21 Number of defrosts allowed before signalling alarm rSF 2 1 5 - S NO
d22 Temperature diff erence to verify decrease 0.1/0.2 0.1/0.2 0.5/0.9 Δ °C/°F S NO
300100_162_R01
Regulation Defrost
Sv
time
ON
St
OFF
COMP
rd
d20
Download tendency
reset time d16
Ref. Description
Sv Control probe
St Control set point
rd Control diff erential
d16 Time with no temperature decrease
before starting defrosting
d20 Sampling time
for alarm rSF
t Time
Fig. 10.h
After switching on the compressor, the iJW controller checks at the intervals set for d20 that the control temperature falls by at
least by the value set for parameter d22; at the end of each interval, if the temperature decreases, the time with no temperature
decrease is reset; on the other hand, if the temperature remains constant or increases, the controller starts counting the time
with no temperature decrease, and on reaching the threshold set by parameter d16, a defrost is started. This operating cycle is
repeated for a maximum number of defrosts set by parameter d21, after which alarm rSF is activated and the unit is switched off .
Alarm rSF is reset manually using parameter rSA.
10.9 Maintenance alarm
The iJW controller can count the time that elapses since maintenance was last carried out, and signal a maintenance request
alarm.
Code Description Def Min Max UOM User User terminal
HMP Operating hour threshold for maintenance alarm hx1000 0 0 45 hours/
1000
SNO
HMr Reset operating hours 0 0 1 - S NO
If the RTC clock is available and working correctly, the iJW controller can count the number of hours that have elapsed since
the last time the operating hours were reset. When the threshold set by parameter HMP is exceeded, the maintenance request
alarm SrC is signalled. Alarm SrC is reset manually by resetting the operating hours using parameter HMr. Parameter HMr can be
used to reset the count of operating hours since maintenance was last carried out even if the alarm has not been activated. If
the operating hour threshold HMP=0 (default), the alarm is disabled.
Notice: the maintenance alarm can only be activated on models fi tted with RTC and with the clock set correctly.
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Productinformatie
| Merk | Carel |
| Model | iJW |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14964 MB |
