Alarms and Messages of UA 300 D
96
Version 2.03 27. Juni 2008
No. Message Cause Correction
Messages
128 Sensor Fault Sensor disconnected, short circuiting of sensor. Tem-
perature on sensor outside set measuring range. Re-
quired or optional sensors are monitored when detec-
ted by controller through sensor scan.
Check connecting cable,
check cable screening,
replace sensors affected
134 Safety loop Safety Loop digital input actuated. −
135 Oil press.fault1 Not used. −
136 Oil press.fault2 Not used. −
189 Refrig. Pt. Disabl. Refrigeration point enabling disabled. −
240 Setpoint Change Setpoint changed. −
8.1 Alarms
Open coldroom door alarm (controller type UR 141)
Alarm is generated if the coldroom door remains open beyond a definable time (Menu 6−2−3).
High or low temperature alarm
High or low temperature is alarmed when temperature rises or falls to the alarm setpoint on the supply air sen-
sors (UA 111 X / UA 111 XP) or room air sensors (UR 141) and the set delay has expired.
LOW TEMPERATURE
REFERENCE VALUE
ALARM ON
ALARM OFF
°C
t
dd
TEMPERATURE
d = DELAY TIME
OVER TEMPERATURE
ZNR. 51203 58 630 E0
The high temperature setpoint is entered in °C, whereas the low temperature setpoint is entered as a difference
to the cooling setpoint in K. High and low temperature setpoints can be set separately for each temperature
zone. The time delay applies to all.
This alarm is inactive during defrosting. Any delay that may have started is reset at the commencement of defro-
sting and restarts from the beginning on completion of defrosting.
No defrost alarm
Alarm is generated if defrosting does not take place during a definable interval, but not if defrosting is suppres-
sed due to high temperature or by demand defrosting.
The delay for the No Defrost alarm should not be set too small so as to avoid false alarms (No Def-
rost parameter in Menu 6−2−3). If the maximum interval between set defrost times (Menu 3−2) is 48
hours, for example, the delay for No Defrost alarm must be set at least 1 hour longer, i.e. 49 hours
To Next Page
