-00
35
EXPANSION VALVE OPENING INCORRECT
Logical variable : DCDETn
Incident codes KP02 : n7
KP07 icon :
Description
This fault is only processed on units equipped with electric expansion valves DANFOSS TQ type.
No compressor on circuit n is working. A compressor start-up command has been issued and the expansion
valve is in the pre-heat phase.
After 6 minutes, the expansion valve opening value calculated for start-up of the compressor has still not been
reached.
Action
F Circuit n start-up is not authorised.
F The fault is displayed on the screen.
F The remote fault report is delayed for 6 minutes.
Resetting
Fault resetting is manual.
Trouble-shooting Solution
Expansion valve sensor fault.
Wiring fault or disconnection of the sensor.
24V supply fault on expansion valve.
The green LED on the static relay is lit up but the
expansion valve is not heating.
Replace expansion valve.
Check sensor connection.
Check supply
Check the static relay and the expansion valve
controller card.
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