pag 23
C23
Clogged filter signal *** Automatic - no intervention ( even if electrostatic filters)
E24
Water temperature out of limit Automatic - water coil reclusion
E25
Ventilation block due to external low temperature Automatic
E26
Ventilation block due to external high temperature Automatic
E27
Ventilation block due to ambient low temperature Automatic
E28
Ventilation block due to ambient high temperature Automatic
E29
Unit configuration error Automatic - it switches off the outputs, except the alarm relay
E30
Overtemperature alarm from water probe Manual - total blockout of the unit
E31
Alarm of max supply temperature limit Manual - total blockout of the unit
C32
Fast dehumidification in progress *** Dehumidification signalling with reduced flow rate
E33
Recovery compressor lockout for low
enthalpy/ambient air temperature (heat mode)
Automatic - Recovery compressor lockout and ventilation
lockout (off for Timecycle)
E34
Recovery compressor lockout for high ambient air
temperature (cool mode)
Automatic - Recovery compressor lockout and ventilation
lockout (off for Timecycle)
C35
Humidifier on in antifreeze protection Automatic - signalling only
*** Cumulative shutdown relay not activated by alarms
The code C indicates a warning, but it doesn’t compromise the unit operating.
Example: C23 indicates that filters have to be replaced or cleaned.
The E code indicates alarms that compromise the unit operating.
The passage from a code C to a code E occurs if the alarm switches from an automatic to a manual reset, this because the
number of events per hour that occurred exceeded the critical threshold.
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