Fujitsu Waterstage WOYK150LJL, Installation Manual

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Fault Diagnosis
Depending on whether the fault comes from the outdoor unit or the hydraulic unit, the fault may be indicated by the
digital display or the LED on the interface cards.
►
Faults in the Hydraulic Unit
Faults or breakdowns on the hydraulic unit are indicated by the display on the user interface.
The display shows the symbol.
Press the key for more details on the origin of the fault.
When the error has been resolved, the faults are re-initialised at zero automatically.
Before any maintenance operation,
ensure that the general power supply is switched off.
Frost protection is not available when the heat pump is not powered up.
OFF
ON
1
2
U0629273-A
Hydraulic unit: Fault visible on the digital display.
Error Designation Probable causes Proposed actions
10 Outside sensor
Short-circuit.
Unplugged or disconnected sensor.
Faulty sensor.
Other fault.
Check the sensor's wiring.
Replace the sensor.
32 Flow sensor 2
33
Flow sensor HP
44 Return sensor HP
50 DHW sensor 1
60
Room sensor 1
65 Room sensor 2
83 BSB, short circuit
Wiring problem (between the sensor
or remote control, display and
controller).
Check the wiring.
127 Legionella temp
Anti-legionella temp setpoint not
reached.
Check the wiring of the DHW backup /
boiler connection.
212 Internal comm failure Unplugged or disconnected sensor. Check the sensor's wiring.
356 Flowmeter Insufficient flow.
Check the opening of the valves of the
installation.
Check the flowmeter's wiring.
Replace the flowmeter.
369
External External safety triggered EX3. -
370 Thermodynamic source See details page 74. -
441 BX31 no function
Short-circuit.
Unplugged or disconnected sensor.
Faulty sensor.
Other fault.
Check the sensor's wiring.
Replace the sensor.
442
BX24 no function
443 BX33 no function
444 BX34 no function
516 Heat pump missing
Loss of connection between
controller and HP.
Check the wiring between X60 and the
interface board.
Waterstage / Installation / 2011 - EN