Language Selection; Alarms; Table Of Alarms - Lennox @DNOVA pCO1 User Manual

4.3.4 Language selection

English is the language automatically selected, but it can be changed into: Italian, French, German, Spanish.
To modify the language, operate as follows:
1. Press the PROGRAM key, select the MAINTENANCE item and press ENTER
2. Press ENTER in the screen A0, and UP or DOWN to modify the language
3. Press ENTER to confirm the new language.

5 ALARMS

The alarms managed by the program safeguard soundness of the connected devices and provide signals in
case the control parameters have exceeded the normal values or the board is faulty. The alarms originate
from alarm digital inputs, probes or board. Their effect ranges from the simple block signalling of one or more
devices to the air-conditioning unit stop. Many alarms are subject to programmable delay times.
When an alarm state is identified, the following signals occur:

the red LED under button ALARM turns on

abbreviation AL starts blinking on the Menu screen
Pushing button Alarm, the buzzer switches off and the alarm screen is displayed. If more alarms are active,
the screen of the first alarm is displayed; the other alarms can be displayed by using the arrow buttons. If
other buttons are pressed, the alarm screens are left but they keep stored and are displayed again whenever
the Alarm button is pressed.
To rearm the alarms and delete the message manually, simply move the cursor on the alarm screens and
push button Alarm again; if the alarm causes have disappeared (digital inputs rearmed, temperature within
the normal values, etc...), the screens disappear, the red led switches off and message "NO ALARM
ACTIVE" is displayed. If the cause of one or more alarms is still active, the disabled alarms only disappear,
whereas the other alarms keep displayed and the buzzer and the red led switch on again.
Alarms are divided into two categories: manually-rearmed alarms or automatically-rearmed alarms.
The manually-rearmed alarms require alarm screen deleting (as described above) to restart the devices or
the air-conditioning unit. The automatically-rearmed alarms unlock the device or restart the air-conditioning
unit after the cause has disappeared, but the alarm screen keeps stored in the memory.

5.1 Table of alarms

CODE
A01 Compressor 1 general alarm
A02 Compressor 2 general alarm
A03 Compressor 1 low pressure
A04 Compressor 2 low pressure
A05 No air flow
A06 Outlet fan thermal
A07 Heater 1 thermal
A08 Heater 2 thermal
A09 Fire / Smoke detection
A10 Dirty filters
A11 High ambient temperature
A12 Low ambient temperature
A13 High ambient humidity
A14 Low ambient humidity
A15 Compressor 1 working hours threshold reached
A16 Compressor 2 working hours threshold reached
A17 Outlet fan working hours threshold reached
A18 Ambient temperature probe faulty or disconnected
Recovery water
A19
disconnected
A20 External air temperature probe faulty or disconnected
A21 Outlet air temperature probe faulty or disconnected
A22 Ambient humidity probe faulty or disconnected
A23 Condenser 1 pressure probe faulty or disconnected
A24 Condenser 2 pressure probe faulty or disconnected
A25 Condenser 1 temperature probe faulty or disconnected
A26 Condenser 2 temperature probe faulty or disconnected
A27 High humidifier current
INNOV@-pCO1-IOM-0907-E
DESCRIPTION
temperature probe faulty
DELAY UNIT OFF
-
-
see T2
see T2
see T4
-
-
-
-
-
see T2
see T2
see T2
see T2
-
-
-
60 sec (fixed)
or
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
60 sec (fixed)
-
DISABLED
- Compressor 1
- Compressor 2
- Compressor 1
- Compressor 2
yes All
yes All
- Heater 1
- Heater 2
yes All
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- Humidifier
23