19. DIAGNOSIS AND TROUBLESHOOTING
19.1 Troubleshooting
All units are checked and tested at the factory before delivery, however, it is possible that some anomaly or failure may occur
during operation.
It is recommended to reset an identification alarm only after removing the cause that generated it; repeated
resets may result in irreversible damage to the unit.
CODE
ALARM DESCRIPTION
AL07
Heater overheating alarm
AL08
Air filter pressure switch
AL13
Fire/smoke alarm
AL18
Ambient/return air sensor faulty or disconnected
AL19
Supply air sensor faulty or disconnected
AL20
Outdoor air sensor faulty or disconnected
AL22
Exhaust air sensor faulty or disconnected
AL23
Duct pressure sensor faulty or disconnected
AL24
Air quality sensor faulty or disconnected
AL28
I/O configuration error
AL29
RTC faulty or disconnected
(1)
These alarms cause the turn off of the unit, putting it on the OFF by alarm status.
(1)
RESET
CONSEQUENCE
Manual
Turns off all the heaters and forces the fans to 100%
Manual
Display only
Automatic
Turns off all devices
Automatic
Disables regulations that depends on it
Automatic
Disables regulations that depends on it
Automatic
Disables regulations that depends on it
Automatic
Disables regulations that depends on it
Automatic
Disables regulations that depends on it
Automatic
Disables regulations that depends on it
Automatic
Turns off all devices
Automatic
Disabled time band management
EN
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