Itho Daalderop WPU 5G 25 c, User Manual

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10. Faults
10.1. Error messages
Service
If a connected device or appliance has a malfunction, this
is shown on the screen via the flashing
SERVICE button.
The service notification is shown flashing after the
thermostat is activated.
By pressing the SERVICE button, more information
appears on the screen.
●
If the heat pump displays a message, the
temperature symbol also appears (see Temperature
error message).
●
If the ventilation unit displays a message, the
ventilation symbol also appears. (see Ventilation
error message)
By pressing the SERVICE button again or after 20 seconds
of no operation, the thermostat will return to operating
status.
If you can't fix the error or the defect
yourself, contact your installer or service
organisation.
10.2. Temperature error
Temperature
Error code
Service
By pressing the SERVICE button, the temperature symbol
and an error code appear on the screen. This error code
allows you to determine the cause of the error.
For example: The error code A1 13 consists of a device code (A1) and
a serial number (13) that are shown alternately.
If another device has an error at the same time, the
INCREASE or REDUCE buttons will be visible. By pressing
these buttons, the various errors can be viewed. The
small grey digits show the serial number of the error.
Follow the instructions as described in the
Error tables on page 39.
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