ISU-689:2016/GB
14
•
Protection against possibility of blocking the pump and the three-
way valve (pump and valve are switched on for about 20 seconds,
at least once a daily).
CH mode
–
mode in which the boiler heats the CH system. Detailed
described in section 2.4.1.
DHW mode
–
mode in which the boiler heats the DWH tank. Detailed
described in section 2.4.3.
WINTER mode
–
the boiler performs the heat demand for both CH
system and heating of domestic water. Priority is always DHW. In the
boiler we can turn off the heating of domestic water function by
pressing
[C]
button. In this mode, the boiler will ignore the heat
demand from the DHW tank.
SUMMER mode
–
the boilers performs only heating of domestic
water, and ignores the heat demand for heating in CH system.
The boiler is factory adapted for operation in CH system only, after
installing to boiler the domestic hot water tank, the boiler can
operate in heating the domestic water mode.
5.3. Settings
5.3.1. Change the setting of heating water
Use
[D]
or
[E]
buttons to
change the heating water
temperature of the CH
system on the outlet from
boiler. The display will flash
the set temperature in
degrees Celsius. The
selection must be accepted with
[B]
button. If the user does not
accept, after about 10 sec you will leave the function without saving
new value.
5.3.2. Change the setting of domestic water
Use
[G]
or
[F]
buttons to
change the heating water
temperature of the DHW
system on the outlet from
boiler. The display will
flash the set temperature
in degrees Celsius. The
selection must be accepted with
[B]
button. If the user does not
accept, after about 10 sec you will leave the function without
saving new value.
5.3.3. Switching the SUMMER / WINTER mode
Use
[A]
button to change
WINTER mode to
SUMMER mode. The
symbol (W2) shown on
the picture will appear
on the screen. To revert
to WINTER mode, use
[A]
button again.
5.3.4. Turn off the heating of domestic water
By using
[C]
button, you
can turn on or turn off
the heating function.
Turning off the function
is signaled by the
symbol (W5) shown on
the picture.
5.3.5. Stand-by mode
Use [
A+C]
3sec
buttons to
activate this mode The
symbol (W11) shown on
the picture will appear
on the screen. Press
[B]
button to activate the
boiler.
5.4. Diagnosis
When the operation of the boiler will be incorrect the display shows
the symbol "E" and the error number. When user intervention is
required to remove the blockade of, there will be RESET displayed.
If the boiler will continue to go into a blockade state an AUTHORISED
SERVICE COMPANY needs to be called.
Error
code
Error description
Reset
required
01
No flame
R
02
Fake flame
–
signaling of disturbances in the flame
control circuit
R
03
Activation of temperature limiter on boiler water
system or activation of heat exchanger temperature
limiters
R
04
-
-
05
No record of fan speed
R
06
-
-
07
Protection on exhaust outlet (2.2)
A
08
Flame control circuit error
A
09
Error of circuit of gas valve control
R
13
Remote reset error
W
15
Test of NTC sensors failed
R
16
Error of supply water NTC sensor (2.15)
R
17
Error of return water NTC sensor (2.14)
R
18
Damage of supply water NTC sensor (2.15) or return
water NTC sensor (2.16)
R
21
ADC transducer error
A
25
Matching error
A
30
Closed SUPPLY CH NTC sensor (2.15)
R
31
Open SUPPLY CH NTC sensor (2.15)
R
32
Closed DHW NTC sensor
A
33
Open DHW NTC sensor
A
34
Low supply voltage
A
37
Low pressure of boiler water
A
41
Pressure transducer (2.8)
–
no communication
A
43
Closed RETURN CH NTC sensor (2.14)
R
44
Open RETURN CH NTC sensor (2.14)
R
45
-
-
46
-
-
47
Pressure transducer (2.8)
–
damaged or not connected
A
74
Temperature sensor of solar collector - closed
A
75
Temperature sensor of solar collector - open
A
76
-
-
77
-
-
78
-
-
79
-
-
80
Swapped NTC sensors of supply and return
R
81
NTC sensors error
see
description
90
Internal error
94
Internal error
see descr.
95
Error of cascade NTC sensor
see descr.
96
Error of ES outdoor temp. sensor
see descr.
97
Cascade system error
see descr.
98
Error of communication between boilers
see descr.
99
No communication CONSOLE / CONTROLLER
see descr.
Table 5.4.1
–
Error codes
During displaying of each error code the pump is startup.
The only exception is an error E37.
Error 01 description
–
Number of ignition attempts has been
exhausted and no flame is detected during the safety time in any of
the attempt.
The error may also indicate that the boiler water flow is too low - less
than 20 dm
3
/min - or the water flow sensor is damaged (2.17).
