Faults; Fault List; Hydraulic Unit Fault - Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document

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Split system single phase type

2 Faults

2.1

Fault List

2.1.1 Hydraulic Unit Fault

Faults which occur on the Hydraulic Unit are shown
by the symbol
. Press the info key for details on the
cause of the fault. The following information is
displayed :
• Description of the error
• Location of the error (sensor or contact)
• Reset. Depending on its type, the fault can be
manually or automatically deleted:
No.: Designation of error
10: Outdoor sensor
33: Flow sensor HP
44: Return sensor HP
50: DHW sensor 1
60: Room sensor 1
65: Room sensor 2
105: Maintenance message
121: Flow temp HC1 (too low)
122: Flow temp HC2 (too low)
127: Legionella temp
369: External fault (safety component)
370: Thermodynamic source*
No connection
* A fault in the outdoor unit is indicated by LED located on the Hydraulic Unit interface board.
LED display
LED 2 (green)
1 Flash
4 Flashes
4 Flashes
6 Flashes
6 Flashes
7 Flashes
7 Flashes
7 Flashes
7 Flashes
7 Flashes
8 Flashes
8 Flashes
9 Flashes
9 Flashes
9 Flashes
10 Flashes
10 Flashes
10 Flashes
Continuous flashing
(1 sec ON / 1 sec OFF)
ON
OFF
Maintenance Document 1589-3
Fault description
LED 1(red)
1 Flash
Communication error between Hydraulic Unit and Outdoor unit.
1 Flash
Heat pump capacity signal error (Open or short).
2 Flashes
Hydraulic Unit heat-exchange thermistor Error.
4 Flashes
Active filter error.
4 Flashes
PFC error
1 Flash
Discharge thermistor error.
2 Flashes
Compressor thermistor error.
3 Flashes
Heat-exchange thermistor (outlet) error.
4 Flashes
Outdoor thermistor error.
8 Flashes
Expansion valve thermistor error.
4 Flashes
Current sensor error.
6 Flashes
Pressure sensor error.
4 Flashes
Current trip.
5 Flashes
Detection of compressor position error.
Compressor start up error.
7 Flashes
Outdoor unit fan motor error.
1 Flash
Discharge temperature protection.
3 Flashes
Compressor temperature protection.
5 Flashes
Low pressure abnormal.
Pump down operation.
OFF
During defrost
OFF
Normal operation / Operation stops
Manual delete: the text displayed when pressing
the info key shows "reset ?". Press OK once, the
yes flashes; press again to confirm deletion of the
fault.
Faults
whose
automatically reset.
• Heat pump op: shows whether or not the heat pump
operates despite the fault.
Location
(connection)
Manual
X86
X70
X70
X84
the polarity of the
room sensor is not
respected.
deletion
is
automatic
Reset
HP op
Auto
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
-
-
Clear
are
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
1, 2
4
5
21
21
7
11
8
9
14
16
24
15
17
18
22
25
26
5

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This manual is also suitable for:

Waterstage ws a100dd6 seriesWaterstage wg a050dd6 seriesWaterstage wg a100dd6 seriesWaterstage wo a060ldc seriesWaterstage wo a080ldc seriesWaterstage wo a100ldt series

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