IOM BASIC CLIMATIC CONTROLLER - Page 21
Diagnostics
Alarms
Basic CLIMATIC
TM
can perform full systems diagnostics
and signal a series of alarms.
Alarm trigger and reset modes are set using parameters
Pa A01 – Pa A26.
Alarms events per hour
For some alarms the signal will not be given for a certain
amount of time, determined by a parameter.
For some alarms the number of alarm events is
counted; if the number of alarm events in the past hour
exceeds a certain
threshold set by a parameter, the alarm will switch from
automatic to manual reset.
Alarms are sampled every 226 seconds;
Example: if the number of events/hour is set to 3, the
duration of an alarm must fall between 2*226 seconds
and 3*226
seconds for the alarm to be switched from automatic
to manual reset.
Automatic reset
Counter
Alarm
Alarm sampling
Manual reset
Time
If an alarm is triggered more than once within
one sampling period (226 seconds), only one
alarm will be counted.
Alarms
with
manual reset
are
reset
by pressing the
ON-OFF button and releasing.
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36,75
Manual reset
shuts down corresponding
loads
and
requires an operator to intervene (
reset
the alarm using
the ON-OFF
control).
Manual reset alarms
are used mainly to identify
problems which could result in damage to the
system.
Alarm code
DESCRIPTION EFFECT
Reset ACTION
High pressostat alarm
This alarm may indicate the following
Press the ON/OFF button, until the alarm
problems:
disappeared, if the alarm shows up again
- High pressostat protection
Unit
check:
E01
stops
Manual
- Compressor electrical protection
•Coil clean and no blocked.
(only EAC 047 o 081)
• Water flow on the cooling cycle
- Indoor fan electrical protection
•Check fuses of the fan
- Fuses of the fan burn out
Low presostat alarm
When this alarm shows up repeteally,
This alarm may indicate the following
and the alarm keeps on, make a electrical
E02 problems:
Compressor
Manual
reset and check:
- Low amount of refrigerant
1 stops
•Coil clean and no blocked.
- Low water flow in cooling cycle
• Water flow on the cooling cycle
- Blocked coil in heating cycle
•Check fuses of the fan
- Fuses of the fan burn out
•Check refrigerant charge.
After two automatic resets in one hour, it
comes to be a manual reset
Press the ON/OFF button until the alarm
Compressor and fan thermal protection
disappeared, if alarm shows up again
alarm: Compressor
Manual
check continuity and change the faulty
E03
- Compressor and fan thermal protection
1 stops
component
open
•Check refrigerant charge
- Faulty power supply
•Check the refrigerant circuit is not
blocked
•Check connections and fusses
•Check power supply
