Alarms And Troubleshooting; Alarm Summary Table - Carel heaterSteam User Manual

15. ALARMS AND TROUBLESHOOTING

15.1 Alarm summary table

When an alarm is activated a message identifying the alarm is displayed on the control module.
In the case of potentially dangerous alarms, the control module automatically shuts the humidifier down.
For some alarm events (see Table 15.1.1), the signalling of the alarm is accompanied by the activation of an alarm relay, as
described in: Other auxiliary contacts.
If the cause of the alarm is no longer valid, the humidifier and alarm relay output can be reset automatically or manually,
according to the type of problem, while the message displayed is deactivated manually by pressing the reset-PRG button.
If no longer active, the alarm status continues to be indicated until the reset-PRG button is pressed.
Still active alarms can not be reset.
9
5
In the type C control module the presence of an alarm is indicated by the illumination of LED 9 and a combination of the
LEDs 5 (Fig. 15.1.1); in the event of more than one alarm, these are indicated in sequence, at 2 second intervals.
In the type H or T control module, if not in programming phase, in the presence of an alarm LED 9 (see Fig. 15.1.2) begins
flashing, while the display 5 indicates the alphanumeric alarm code.
The message is displayed cyclically, for a duration of two seconds, alternating with the measurement normally displayed (if the
measurement normally displayed corresponds to a disconnected probe, the measurement is not displayed; this will
automatically return to the display if the probe is reconnected).
In the event of more than one alarm, the display indicates all the corresponding codes in sequence, at two second intervals.
The alarm Ec cannot be reset.
In the event of the alarm CL (regular maintenance required), the alarm can be reset only by resetting the hour counter; see
Resetting the hour counter.
The alarm E1 may appear in two distinct cases:
1. Malfunction when reading from the parameter memory (typically on start-up)
The default parameters are temporarily recalled, without being saved in the parameter memory (the parameters can be
accessed and the correct values restored).
In any case the default parameter recall procedure is recommended; see Recalling the default parameters.
2. Malfunction when writing to the parameter memory (typically on pressing the PRG button)
Any modifications made will be cancelled; the parameters can be accessed, the values modified and save operation
repeated.
Table 15.1.1 lists the alarm indications, the causes, the conditions and the possible solutions.
The remote terminal column indicates the alarm message which appears on the LCD display of the Carel Humivisor remote
control panel, if one is connected to the humidifier.
Carel code +030221761
Fig. 15.1.1
50
preliminary version - rel. 2.0 - 03/09/99
heaterSteam
5
Fig. 15.1.2
9