Fault Diagnosis; Faults In The Hydraulic Unit - Fujitsu Waterstage WOYG160LJL Installation Manual

 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.
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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
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.
Hydraulic unit: Fault visible on the digital display.
Error Designation
10 Outside sensor
32 Flow sensor 2
33 Flow sensor HP
Return sensor HP
44
50 DHW sensor 1
60 Room sensor 1
65 Room sensor 2
83 BSB, short circuit
Legionella temp
127
212 Internal comm failure
356 Flowmeter
369 External
Thermodynamic source
370
441 BX31 no function
442 BX24 no function
443 BX33 no function
BX34 no function
444
516 Heat pump missing
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.
- 74 -
symbol.
Probable causes
Short-circuit.
Unplugged or disconnected sensor.
Faulty sensor.
Other fault.
Wiring problem (between the sensor
or remote control, display and
controller).
Anti-legionella temp setpoint not
reached.
Unplugged or disconnected sensor.
Insufficient flow.
External safety triggered EX3.
See details
Short-circuit.
Unplugged or disconnected sensor.
Faulty sensor.
Other fault.
Loss of connection between
controller and HP.
page 74.
Proposed actions
Check the sensor's wiring.
Replace the sensor.
Check the wiring.
Check the wiring of the DHW backup /
boiler connection.
Check the sensor's wiring.
Check the opening of the valves of the
installation.
Check the flowmeter's wiring.
Replace the flowmeter.
-
-
Check the sensor's wiring.
Replace the sensor.
Check the wiring between X60 and the
interface board.
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Waterstage / Installation / 2011 - EN
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U0629273-A