6 Troubleshooting
6.1
Resolving operating errors
If your appliance malfunctions, the status LED flashes and/or changes
colour and a message containing an error code is displayed on the main
screen of the control panel. This error code is important for the correct and
rapid diagnosis of the type of malfunction and for any technical assistance
that may be needed.
If an error occurs:
1. Make a note of the code displayed on the screen.
2. Remedy the problem described by the error code or contact the
installer.
3. Switch the heat pump off and back on to check that the cause of the
error has been removed.
4. If the code is displayed again, contact the installer.
6.1.1
Types of error code
The control panel can display three types of error codes:
Tab.21
Type of code
Code format
Colour of the status LED
Warning
Axx.xx
Green flashing
Blockage
Hxx.xx
Continuous red
Lock out
Exx.xx
Red flashing
6.1.2
Error codes
An error code is a temporary status, resulting from the detection of a heat
pump anomaly. The heat pump attempts to restart automatically until it
switches on.
When one of the following codes is displayed and the heat pump cannot
restart automatically, contact a maintenance technician.
Tab.22 List of temporary error codes
Error
code
Message
Description
H00.17
DHW sensor Closed
Domestic Hot Water tank temperature sensor is either shorted or measures a
temperature above range
H00.32
TOutside Open
Outside temperature sensor is either removed or measures a temperature below range
H00.33
TOutside Closed
Outside temperature sensor is either shorted or measures a temperature above range
H00.34
TOutside Missing
Outside temperature sensor was expected but not detected
H00.47
HP flow sensor removed
or below range
Heat pump flow temperature sensor is either removed or measures a temperature
below range
H00.48
THp Flow Closed
Heat pump flow temperature sensor is either shorted or measures a temperature
above range
H00.49
THp Flow Missing
Heat pump flow temperature sensor was expected but not detected
H00.51
THp Return Open
Heat pump return temperature sensor is either removed or measures a temperature
below range
H00.52
THp Return Closed
Heat pump return temperature sensor is either shorted or measures a temperature
above range
H00.57
T DHW Top Open
Domestic Hot Water top temperature sensor is either removed or measures a
temperature below range
H00.58
T DHW Top Closed
Domestic Hot Water top temperature sensor is either shorted or measures a
temperature above range
H02.02
Wait Config Number
Waiting For Configuration Number
6 Troubleshooting
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MIT-S
7684505 - v03 - 14052020
