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

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