Faults - Zehnder Rittling ComfoBox Q User Manual

Table of Contents

1.15

Faults

The heat pump continuously monitors a number of parameters. If any parameter is out of range, the control unit

activates the alarm and generates an error message, which is registered in the ALARMS menu.

If there is a malfunction, the heat pump will not allow the compressor to start. To indicate the presence of a fault,

the button

illuminates continuously in red and the operating mode EMERGENCY STOP is activated

automatically.

Depending on the type of problem, different situations may arise.

Active alarms

Active alarms indicate malfunctions occurring at this time. At the beginning of the ALARMS menu, successive

menu windows are displayed, showing the text with the reason for the alarm. The

continuously in red and is displayed in the menu window

If the problem is corrected, these alarms will be cleared and the heat pump will continue to operate automatically.

The button

then flashes red to indicate that an error has occurred but has been corrected. When the alarm

Locked due to repeated alarms

There are a number of critical malfunctions in the operation of the heat pump, in which a permanent shutdown

is activated if the malfunctions are repeated more often than 5 times a day. The

continuously in red and is displayed in the menu window

Even after eliminating the problem, such a lock must be manually removed from the ALARMS menu so that the

heat pump can be put into operation again.

The ALARMS menu contains a historical data register that contains information about the last 50 errors.

In the event of a malfunction of the heat pump, the electric hot water heater must be

activated from the rotary switch in the electrical cabinet.

In case of malfunction of the heat pump, the electric emergency heating of the heat pump

must be activated on the heat pump display.

Zehnder ComfoBox Q / ComfoHeat User Manual, BA-CBQ_DE-CH V1.0

will no longer illuminate.

button illuminates

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