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EN
IMDCFJ. 12.05 6343841_03
Code
Alarm
Code
Pre-alarm
Causes Notes
12 112 High pressure
This signal occurs when the transducer detects a flow pressure
over the set-factory parameter threshold (8) (default: 40 bar).
The pre-alarm state is exited with set_factory (8) – set_factory (b)
pressure (default 40 – 2 = 38 bar)
13 113 No defrosting probe
This signal occurs when the defrosting probe is absent and the
machine is set as heat pump
14 114
Intake pressure transducer
no compressor
This signal occurs when the compressor intake transducer is
absent and the machine is set as heat pump
15 115 Low pressure
This signal occurs when the compressor flow transducer indicates
an intake pressure below the threshold set by the set_factory (9)
parameter in cooling mode (default 4 bar), set_factory(A) ion heat-
ing mode (default 2 bar). The pre-alarm state is exited when the
intake pressure exceeds the intervention set_factory(b) threshold
default equal to 2 bar. The low pressure alarm is suspended in
heating mode for a period of time equal to 3' (set_factory param-
eter (H parameter) from compressor switch on. It is permanently
suspended during cycle reverse
16 - Low performance
Every time the machine is powered, the control checks compres-
sor behaviour once via the yield control procedure (see 8.1); this
control is disabled from dip switch
17 117 Pump magnet circuit breaker
This signal intervenes if the magnet circuit breaker switch protect-
ing the pump is opened. MTP (table 2, contact ID3, clamps M7.5
– M7.6, normally closed). This code is displayed only if the board
is used as a board spare part with SW up to version 3.6.
18 118 High pressure partialisation
This signal occurs every time a partialisation takes place due to
the threshold mentioned in paragraph 8.5 being reached. The
machine blocks in alarm mode when the maximum number of par-
tialisation interventions allowed (expressed by the set_factory (5)
parameter: default 5) is exceeded. With inverter machine mode, it
also indicates a partialisation due to high compression ratio.
19 119 Low pressure partialisation
This signal occurs every time a low pressure partialisation takes
place, par. 8.5. The machine blocks in alarm mode when the maxi-
mum number of partialisations allowed (expressed by the set_fac-
tory (5) parameter: default 5) is exceeded.
20 120 Pressing line temperature partialisation
This signal occurs every time a pressing line temperature par-
tialisation takes place (par. 8.5), the machine blocks in alarm
mode when the maximum number of partialisation interventions
(expressed by the set_factory (5) parameter: default 5) permitted
is exceeded.
21 121 Bemf error
Error in detection of the back emf. This error is returned by the
inverter control board and is linked to compressor peak problems
(longertek 4 code or longertek 20 code)
22 122 Internal communication error
The inverter control board has internal communication problems
(longertek 5 code)
23 123 Over-current
Excess current absorption by compressor (longertek 6 code)
24 124 No load
The compressor does not absorb enough current, it may
turn in idle mode (longertek 7 code)
25 125 Incorrect voltage
The inverter control board indicates incorrect bus voltage
(longertek 8 code)
26 126 Error on start-up
The inverter control board indicates incorrect start-up of
the PMSM motor (longertek code 9)
27 127 IPM protection error Error on the IGBT (longertek 12 code)
28 128 EEPROM error
Eeprom error on the inverter control board (longertek 13
code)
29 129 Compressor stall Code longertek 16
30 130 No communication
The inverter control board does not respond. It may not be
powered or the serial cable could be disconnected or the
A and B signals reversed
31 131 PFC Module PFC inverter module error (longertek 23 code)
32 132
Cooling fin overheating
(code APY 1)
33 133 Over current in acceleration mode Hardware error (cod. APY 2)
34 134 Over-current at constant speed Hardware error (cod. APY 3)
35 135 Over current in deceleration mode Hardware error (cod. APY 4)
36 136 Under-voltage on the DC Bus (code APY 5)
71


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