Problems; Error Codes - Viessmann FS0900SE Betriebsanleitung

14.

Problems

In case of defects, the warning light will flash and an error
code will appear on the display.
lf the unit is not in cooling operation and not defrosting, the
defect reporting relay is interrupted. The report can be
transferred using the potential-free contact.

14.1 Error codes

F1: Short circuit in the temperature sensor
F2: Break in the temperature sensor
During failure of temperature sens ons and a nominal
temperature < 2°C, the compressor will continue to run
with the last running and stand by settings.
F3: The high pressure pressostat has been activated.
The pressostat switches the compressor off. lf the
pressure is too low, the compressor will be switched on.
The display will remain the same. It can be deleted by
pressing a switch.
F4: Temperatures are too low or too high.
This code appears when the temperature setting of
the coldroom has been exceeded by 7K for one hour.
By pressing the
temperature will be shown. lf the temperature
deviation is still too great after one hour, the error
code will be shown again.
F5: Coldroom door has been open for more than
four minutes.
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Page No. 5237341-06 GB
or the button, the coldroom
14 - 14.1
GB
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