Zehnder Rittling ComfoAir Q, Installer Manual

Page: 34 / 52

34 - EN
9.8 Malfunction alerts on the display of the unit
AUTO
sensor
SHIFT MENU
Tu 14:02
When there is a malfunction in the unit the LED next
to the display of the unit will flash.
When accessing the display the corresponding
malfunction code will be displayed.
Code Meaning
AIRFLOW_EHA ERROR The exhaust airflow is not reaching its set point.
AIRFLOW_SUP ERROR The supply airflow is not reaching its set point.
DANGER! OVERHEATING! Two or more sensors are detecting an incorrect temperature.
The ventilation has stopped.
Fix the error as soon as possible to prevent build-up of moisture and CO2.
EXTERNAL FILTER ALARM It is necessary to replace or clean the external filter.
FAN_EHA ERROR The exhaust air fan has a malfunction.
FAN_SUP ERROR The supply air fan has a malfunction.
CHANGE FILTERS NOW It is necessary to replace the internal filters.
EXPECT FILTER CHANGE SOON It is almost necessary to replace the internal filters.
Order the new filters now.
FROST ERROR The supply air temperature is too low.
GROUND_HEAT_ CONNECT ERROR There is no communication between the ComfoFond-L Q and the unit.
GOUND_HEAT_TEMP ERROR The temperature sensor of the ComfoFond-L Q is detecting an incorrect temperature.
HUMID_EHA ERROR The exhaust air humidity sensor is detecting an incorrect humidity.
HUMID_ETA ERROR The extract air humidity sensor is detecting an incorrect humidity.
HUMID_ODA ERROR The outdoor air humidity sensor is detecting an incorrect humidity.
HUMID_SUP ERROR The supply air humidity sensor is detecting an incorrect humidity.
INIT ERROR The unit has not been commissioned.
OPTION_BOX CONNECT ERROR There is no communication between the option box and the unit.
POSTHEAT_ CONNECT ERROR There is no communication between the post-heater and the unit.
POSTHEAT_TEMP ERROR The temperature sensor of the post-heater is detecting an incorrect temperature.
PREHEAT ERROR The pre-heater has a malfunction.
PREHEAT_PRES ERROR There is no communication between the pre-heater and the unit.
PREHEAT_LOCATION ERROR The pre-heater is not in the expected location.
PRESSURE_EHA ERROR The exhaust air pressure sensor has a malfunction.
PRESSURE_SUP ERROR The supply air pressure sensor has a malfunction.
SENSOR_EHA ERROR The exhaust air sensor has a malfunction.
SENSOR_ETA ERROR The extract air sensor has a malfunction.
SENSOR_ODA ERROR The outdoor air sensor has a malfunction.
SENSOR_SUP ERROR The supply air sensor has a malfunction.
SERVICE MODE The basic functions of the unit are stopped.
The ventilation has stopped.
Fix the error as soon as possible to prevent build-up of moisture.
TEMPCONTROL_SUP ERROR The modulating by-pass actuators have a malfunction.
TEMP_SENSOR_EHA ERROR The exhaust air temperature sensor is detecting an incorrect temperature.
TEMP_SENSOR_ETA ERROR The extract air temperature sensor is detecting an incorrect temperature.
TEMP_SENSOR_ODA ERROR The outdoor air temperature sensor is detecting an incorrect temperature.
TEMP_SENSOR_SUP ERROR The supply air temperature sensor is detecting an incorrect temperature.