14
Installation and Operation Manual
Table 6-3 displays the alarm message, cause, and outputs.
Message
Cause
Outputs
P1
Room probe failure
Compressor output acc. to par. Con and CoF
P2
Evaporator probe failure
Defrost end is timed
P3
Third probe failure
Outputs unchanged
P4
Fourth probe failure
Outputs unchanged
HA
Maximum temperature alarm
Outputs unchanged.
LA
Minimum temperature alarm
Outputs unchanged.
HA2
Condenser high temperature
It depends on the AC2 parameter
LA2
Condenser low temperature
It depends on the bLL parameter
dA
Door open
Compressor restarts
EA
External alarm
Output unchanged.
CA
Serious external alarm (i2F=bAL)
All outputs OFF.
CA
Pressure switch alarm (i2F=PAL)
All outputs OFF
rtF
Real time clock board failure
Alarm output ON; Other outputs unchanged; Defrosts
according to par. idF. Contact the service.
Silencing an Alarm
To silence an alarm:
•
If tbA = Y, press any key to silence the buzzer and the relay.
•
If tbA = n, press any key to silence the buzzer. The alarm relay however, is still ON until the alarm condition
recovers.
Alarm Recovery
Probe alarms
(P1, P2, P3, and P4) start some seconds after the fault in the related probe. Probe alarms
automatically stop after a short delay once the probe restarts normal operation. Check connections before replacing a
probe.
Temperature alarms
(HA, LA, HA2, and LA2) automatically stop as soon as the temperature returns to normal
values.
External alarms
(CA-serious and EA) recover as soon as the digital input is disabled.
The pressure switch alarm
, CA, recovers only by switching OFF and ON the device
Viewing the Minimum and Maximum Temperatures
See Table 6-4 for instructions to:
•
View the minimum temperature
•
View the maximum temperature
•
Reset the minimum and maximum temperatures
#
View and Reset Minimum and Maximum Temperatures
View Minimum Temperature
1
Press and release the
DOWN
button.
2
The
Lo
message will be displayed followed by the minimum temperature recorded.
Table 6-3. Alarm Codes, Causes, and Outputs
