ISU-689:2016/GB
15
Error 03 description
–
Heating water has reached 97°C or thermal
protection of the heat exchanger (BW1) or (BW2) has been activated.
Error 07 description
–
Flue gas temperature is too high. Back to
operation after about 10 minutes since the switching off. Check the
thermal fuse. In case it is damaged - replace for new one. If not -
check the wiring.
Disconnect from the power supply to reset.
Error 13 description
–
Permissible number of faults reset has been
exceeded (5 x within 15min). It is necessary to disconnect and turn
on again the power again in order to remove the error.
Error 15 and 81 description
–
If, during standby the temperature
difference on the supply temp. sensor (2.15) and return (2.14) is too
high, an error E15 is displayed. If after 24 hours of error, temperature
difference is still out of range, an error E81 is displayed.
Error 16 description
–
Each time the burner ignites, the value read by
the sensor m
ust change by at least ± 0.25°
C. If the sensor did not
read the change within 2 minutes, an E16 error is displayed.
Error 17 description
–
Within 24h the value of the read temperature
m
ust change by at least ± 0.25°
C.
Error 18 description
–
In continuous mode, the temperature
difference on each sensor is measured if there occurs a temperature
change on any of the sensors above 30K/s, an error E18 is displayed.
Sensors should be checked; defective one or both at once should be
replaced.
Error 21 description
–
An internal control has identified an error of
ADC transducer. Deleting a lockout will be possible if the internal
tests do not show the error again. Probably, the transducer is
damaged and the controller should be replaced.
Error 25 description
–
Software in the microprocessor and EEPROM
memory are not the same. The controller should be replaced.
Error 34 description
–
The supply voltage has dropped below 157V
(+/- 10V).
Error 37 description
–
It appears when the pressure in system read
by the pressure sensor (2.8) is less than 0.5 bar. Check whether the
system pressure is in the range of 1-1.5bar and complete the
installation (if it is needed).
Error 80 description
–
Each time the boiler is started, the NTC supply
and return sensor measures the temperature on both sensors at
short intervals. I
f the return temperature is higher by 3°
C, the time
180s is measured. If the return temperature remains higher during
this time, an error E80 is displayed.
Error 94 description
–
The display in the control panel (2.6) has been
damaged. Replace the display plate.
Error 95 description
–
For boilers connected in series, the
temperature sensor in the supply collector (CS) is not connected or
the sensor is damaged (closed/open). In the case of a single boiler,
the control console does not receive a signal from the NTC supply
sensor. Check the electrical connections.
Error 96 description
–
When the P14 parameter is set on a value
other than zero, the controller does not detect the presence of the
sensor (closed/open). Please check the sensor (ES) connection. If
there is no sensor, change the value of P14 parameter to 0.
Error 97 description
–
The system of boilers connected in series in
the cascade system has changed.
•
The number of connected boilers has changed.
•
The sequence of boilers connection has been changed.
•
The last cascade configuration has failed.
In order to remove the error, re-configure the cascade.
Error 98 description
–
Communication between boilers connected in
series in the cascade system has been lost.
•
The sequence of boilers connection has changed. Re-configure the
cascade.
•
The control system has been replaced in one of the cascade boilers.
Re-configure the cascade.
•
The wiring has been damaged.
Check the wires for serial
connection of boilers.
•
There are problems with power supply of one of the boiler. Check
the power supply and fuses in each boiler.
•
The control console (2.6) has been damaged. Replace the display
board in the control console (2.6).
Error 99 description
–
The display in the control console (2.6) can not
communicate with the controller (2.7). Check the wiring. Replace the
display board or the controller (2.7).
5.4.1. Errors history
Activation of History errors mode takes place after using
[C]
3sec
button. In this mode we have access to the last 8 faults. After turning
on this mode, on the screen appears "bu 0" after 3 seconds. Move to
the index selection screen takes place after 3 seconds or on demand
with
[B]
button. The screen shows number "H i O" indicating the
index of the last fault, fault indexes take values from 0 to 7. To switch
between the indexes faults, use
[E]
and
[D]
buttons. The selected
index after 1s. is replaced by an error code. Switch between the
index and the value of the error code can be made using
[B]
button.
To complete the History errors mode use
[C]
3sec
button.
5.5. Antifreeze function
This function starts the pump when the temperature in CH circuit or
DHW circuit drops below 8°
C. If t
he water temperature drops to 6°C,
the burner starts and heats the water until the temperature reaches
15°
C. The burner's power is set at the lowest level.
5.6. Function to prevent blockage of pump and three-way
valve
Pump and three-way valve are started at least once in 24 hours for
about 20 seconds to eliminate the risk of blockage due to a long
inactivity.
5.7. Break in operation of the boiler
•
leave the boiler connected to the electricity mains;
•
leave the gas valve and water valve of CH opened;
•
start the Stand-by mode with
[A+C]
3sek
buttons.
If the boiler may stay unused for a longer period of time and the
above protections will be turned off from operation you should:
•
disconnect the boiler from the electric mains;
•
drain the water system of the boiler and also CH system if there is
possibility of freezing;
•
close the valve on the water and the gas system.