Code
Alarm code
Pre-alarm
22
122
Internal communication error
23
123
24
124
25
125
26
126
27
127
28
128
29
129
30
130
31
131
32
132
33
133
Over current in acceleration mode
34
134
Over-current at constant speed
35
135
Over current in deceleration mode
36
136
Under-voltage on the DC Bus
37
137
PFC Converter Fault Error in the PFC
40
140
41
141
Over current in acceleration mode
42
142
43
143
Over-current at constant speed
44
144
Over current in deceleration mode
45
145
Over current in acceleration mode
46
146
47
147
Cooling fin temperature sensor error
51
151
54
--
55
155
Water inlet high temperature
Cycle reverse due to high temperature of
--
156
Reading error of the DHW control board
57
157
Outdoor air temperature probe reading
58
158
Inlet water probe no condenser (ONLY
59
159
Output water probe no condenser (ONLY
60
160
61
161
62
162
Compressor motor overload
63
163
64
164
65
165
66
166
67
167
68
168
69
169
70
170
71
171
72
172
No communication between inverter and
73
173
74
174
Drive temperature sensor fault
75
175
76
176
77
177
78
178
Cooling fan Inverter faulty
79
179
80
180
81
181
82
182
83
183
84
184
85
185
86
186
87
187
88
188
89
189
90
190
91
191
High pressure alarm (uPC)
92
192
54
Causes
The inverter control board has internal communication problems (longertek 5 code)
Overcurrent
Excess current absorption by compressor (longertek 6 code)
No load
The compressor does not absorb enough current, it may turn in idle mode (longertek 7 code)
Incorrect voltage
The inverter control board indicates incorrect bus voltage (longertek 8 code)
Error on start-up
The inverter control board indicates incorrect start-up of the PMSM motor (longertek code 9)
IPM protection error
Error on the IGBT (longertek 12 code)
EEPROM error
Eeprom error on the inverter control board (longertek 13 code)
Compressor stall
Cod. longertek 16
The inverter control board does not respond. It may not be powered or the serial cable could be discon-
No communication
nected or the A and B signals reversed
PFC Module
PFC inverter module error (longertek 23 code)
Cooling fin overheating
(cod. APY 1)
Hardware error (cod. APY 2)
Hardware error (cod. APY 3)
Hardware error (cod. APY 4)
(cod. APY 5)
DC Bus over-voltage
(cod. APY 6)
Software error (code APY 9)
module
Software error (code APY 10)
Overload
(cod. APY 11 )
Software error (code APY 12)
Software error (code APY 13)
(cod. APY 14)
No communication
(cod. APY 15)
(cod. APY 16)
Anomalous condition
Protection frequency against over-current and overheating reduced. (code APY 20)
Cycle reverse valve faulty
The cycle reverse valve could be faulty or broken. (see paragraph 8.4)
The water inlet temperature has exceeded the set_installer (H) parameter value. Probable boiler pres-
ence on same plant. At the third intervention of the pre-alarm, the machine goes into alarm mode and
blocks
This pre-alarm indicates the intervention of defrosting due to cycle reverse without having respected
the times between cycle reverses. Cycle reverse has been triggered by the pressing line gas high tem-
the pressing line gas
perature partialisation threshold being exceeded, set_factory (6)-set_factory (4) = default 130°. This pre-
alarm does not cause compressor stop and does not have a limited number of interventions
This pre-alarm indicates a remote probe fault or a communication problem with the DHW control board.
remote probe
The alarm is only active if the parameter (0)=2 or the parameter (8)=4 in the menu with password = 30
This pre-alarm indicates an outdoor air temperature probe fault when the DCP is present or the machine
error
is in heat pump mode.
This pre-alarm indicates a condenser inlet water temperature probe fault
WRL)
This pre-alarm indicates a condenser outlet water temperature probe fault
WRL)
Overcurrent
Carel Inverter
Carel Inverter
Overvoltage
Carel Inverter
Undervoltage
Carel Inverter
Drive overheating
Carel Inverter
Drive underheating
Carel Inverter
Hardware over-current
Carel Inverter
Compressor overheating
Carel Inverter
Reserved
Carel Inverter
CPU error
Carel Inverter
Default parameters
Carel Inverter
DC bus ripple
Carel Inverter
Carel Inverter
uPC
Carel Inverter
Self-configuration failed
Carel Inverter
Inverter drive disabled
Carel Inverter
Motor phases error
Carel Inverter
Carel Inverter
Speed fault
Carel Inverter
PFC fault
Alarm that occurs with PFC enabled while the bus DC is very low
PFC overload trip
This alarm will no longer be present in the new firmware versions
Input voltage error
When the power supply drops below 170 V with engine running
Generic inverter error
Carel Inverter, carel modbus address 213
Probe B1 fault (uPC)
Control wiring
Probe B2 fault (uPC)
Control wiring
Probe B3 fault (uPC)
Control wiring
Probe B4 fault (uPC)
Control wiring
Probe B5 fault (uPC)
Control wiring
Probe B6 fault (uPC)
Control wiring
Probe B7 fault (uPC)
Control wiring
Control wiring
Low pressure alarm (uPC)
Control wiring
Note
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