Troubleshooting; Faults Displayed On Hydraulic Module - Fujitsu AOYA18LALL Installation And Operating Manual

Heat pump air/water split single service
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Heat pump, Split, single service

6 Troubleshooting

Depending on whether the fault comes from the
outside unit or the hydraulic module, the fault may be
indicated by the digital display or the diode on the
interface cards.
Faults displayed on hydraulic
6.1
module
Faults or breakdowns on the hydraulic mode are
indicated by the display on the user interface.
Hydraulic module : Fault visible on the digital display
Error number
Error description
-
No connection
10
Outdoor sensor
33
Heat pump initial temperature sensor error
44
Heat pump return temperature sensor error
50
DHW temperature sensor
60
Ambient temperature sensor 1
65
Ambient temperature sensor 2
105
Maintenance message
121
Flow temperature for (HC1) not reached
122
Flow temperature for (HC2) not reached
127
Anti-legionella temperature not reached
369
External fault (safety component)
370
Outside unit connection error
Hydraulic module : Flashing of the diode visible on the interface card
Diode display
Erroneous element
1 Flash
Transmission error, "hydraulic module - outside unit"
2 Flashes
Abnormal discharge temperature or defective discharge sensor
3 Flashes
Defective exchanger sensor
4 Flashes
Defective outside temperature sensor
Abnormal compressor temperature or defective compressor
5 Flashes
temperature sensor
6 Flashes
HP pressure switch cut off
7 Flashes
Abnormal current quality
8 Flashes
Current quality detection circuit defective
9 Flashes
Active filter error
10 Flashes
Compressor is not operating
11 Flashes
External fan error
12 Flashes
Compressor casing resistance fault
13 Flashes
Active filter cut off for over-intensity
Installation and operating manual "1350-EN"
The display shows the "Bell" symbol
Press the Info key
of the fault.
When the error has been resolved, the faults are
re-initialised at zero automatically.
Error location
Failure to comply with room
thermostat's polarity
B9
B21
B71
B3
See below and fig. 58 and 59
.
for more details on the origin
Heat pump operation
despite the error
No
Yes with OT = 0 °C
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
CN9
CN1
CN7
CN8
CN2
CN4
CN5
CN14
CN15
57

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