Models 3.2 - 13.2, controller µchiller
Blue Box - Page 65
SYMPTOM
OPERATION
PROBABLE CAUSE
POSSIBLE CORRECTIVE ACTION
COOLING
HEATING
C)
No compressor
running.
⊗ ⊗
No water flow at
evaporator
Check hydraulic system
(display On with alarm
"FL")
⊗ ⊗
Faulty flow switch Check contact of flow switch
and replace if necessary
D)
No compressor
running. Fans stopped
(display On with alarm
“F1” or “F2”)
(only version LC and
LC/HP)
⊗ ⊗
Fan thermal protection
intervention
Check insulation between
windings and between windings
and earth; replace fan if
necessary.
E)
No compressor
running. (display On
with alarm "A1")
⊗ ⊗
No consent of defrost
thermostat due to
insufficient water flow rate
Check hydraulic circuit and wait
until the water temperature
exceeds the value necessary for
the unit to restart
⊗ ⊗
No consent of defrost
thermostat due to
insufficient glycol
concentration
The programmed set-point is too
low for the percentage of glycol
in the circuit. Increase the glycol
percentage and reduce the
defrost set-point.
F)
No compressor
running. (display On,
with alarm "E1")
⊗ ⊗
Connections to evaporator
inlet temperature sensor
interrupted
Restore correct connection of
temperature sensor
⊗ ⊗
Evaporator inlet
temperature sensor faulty
Replace temperature sensor
To Next Page
Loading...
