BLUEFIRE HEAT PUMPS MANUAL
pag. 20 di 20
Ver.06
–
2018-05-28
13.
ERROR CODES
CODE
CAUSE
1
Anti-freeze protection coolant (not available at the moment)
2
Lack of protective coolant (not available at the moment)
3
Protection coolant pressure too low
4
High temperature protection for gas compression
5
Compressor overcurrent protection
6
High pressure refrigerant circuit protection
7
Inlet flow refrigerant system protection sensor (not available at the moment)
8
Outflow refrigerant system protection sensor (not available at the moment)
9
High temperature protection sensor for compressed gas
EE
Electrical protection - Power supply phases connection error (400 V devices)
1) Anti-freeze protection coolant (not available at the moment)
2) Lack of protective coolant (not available at the moment)
3) Refrigerant pressure protection too low: after 3 minutes from starting the compressor, the system checks
the pressure of the refrigerant circuit, if the low pressure sensor is open the system enters protection mode
(error code 3). When the system detects that the sensor contact has closed, the system exits the protection
mode.
4) Protection from high temperatures for gas compression: after 5 minutes from the start of the compressor,
the system detects the temperature of the gas circuit under compression, which if it turns out to be T3 ≥120
° C enters the protection mode (error c
ode 4) . If, on the other hand, T3 ≤ 90 ° C, the system exits the
protection mode.
Note 1: the protections P1, P2, P4 are active only when the compressor related to the system is running. If
the compressor is off, even if the temperature point is reached, the protection does not activate.
1) Overcurrent protection of the compressor: the system detects the compressor phases (phase 1 or 2) for three
seconds. If current phase 1 (or 2) ≥ 1 the system enters the overcurrent protection phase (error code 5). If curren
t
phase 1 (or 2) ≤ 1, the system exits the overcurrent protection.
2) Protection from high temperatures for gas compression: the system detects the contact status of the high
temperature safety sensor, if it is open the system enters protection mode (error code 6), otherwise it does not
intervene.
3) Inlet flow refrigerant system protection sensor (not available at the moment)
4) Outflow refrigerant system protection sensor (not available at the moment)
5) High temperature protection sensor for compressed gas: the system detects the system temperature for 5 seconds.
If the sensor is disconnected or faulty the system enters the high temperature protection mode (error code 9),
otherwise it exits this mode.
6) Protection sensor for the power supply phases (not valid during the operation phase of the pump): Within 10
seconds of connecting to the power source, the system continuously detects the power supply phases for 2 seconds; if
the phase is incorrect or there is a lack of phase, the system enters protection (error code EE). When this protection is
active, the system cannot return to the normal phase unless the machine has been correctly reconnected to the power
source (phase verification)
Note 2: The following error codes, high pressure protection E6, low pressure protection E3, overcurrent
protection E5, gas circuit protection on compressor side E4, all indicate a serious malfunction: if the system
error appears 3 times in 30 minutes, the system cannot return to normal operation unless the power is cut off
and the problem is solved when the pump is re-connected to the mains.
During the defrost period, the high / low pressure protection system is not active