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INSUFFICIENT SUPERHEATING
Logical variable : DSURFn
Incident codes KP02 : n4
KP07 icon :
Description
This fault is only processed on units fitted with electrical expansion valves.
A compressor on circuit n has been operating for at least 2 minutes and one of the 2 following conditions
remains satisfied for at least 2 minutes :
TASPn ≥ (TEEG+3°C)
(TASPn-TBPn) ≤ 2°C
With :
TASPn ó Suction temperature on circuit n (°C)
TBPn ó Evaporation temperature on circuit n (°C)
TEEG ó Chilled water intake temperature (°C)
Action
F Immediate halt of circuit n.
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
Evaporation, suction or chilled water intake sensor
fault.
Wiring fault or disconnection of one of these sensors.
Replace the sensor.
Check sensor connections.
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