Potterton Eurocondense Plus Installation Manual page 30

CALL-UP AND PARAMETER VALUES
Table 6 Call-up and parameter values for BMU control centre
Note: Parameters in the groups "A, b, C and d" can only be called, parameters in group "P" can also be
changed.
Display Description
2)
General:
A 0 Fault diagnosis code (system)
A 1 Boiler temperature (flow)
A 2 Hot-water sensor 1
A 3 Water or air pressure (not activated)
A 4 Automatic boiler operating phase (see Table 5, Page 18)
Actual temperatures
b 0 Internal BMU SW diagnosis code
b 1 Boiler temperature (return)
b 2 Hot-water sensor 2 (not present)
b 3 Flue gas temperature (not present)
b 4 Current outdoor temperature
b 5 Mixed outdoor temperature
b 6 Attenuated outdoor temperature
b 7 Mixer flow temperature (only when mixer module CIM is connected)
Other process values
C 1 Ionization current
C 2 Fan speed (value x 100)
C 3 Current fan control (PWM signal)
C 4 Relative power (percent of max. output)
C 6 Difference between flow and setpoint temperature
Settings:
d 1 Setting for two point or modulation control (PID)
d 2 Current boiler temperature setpoint
d 3 Setting for room temperature
d 4 Setting for hot-water temperature
d 5 Max. degree of modulation in heating mode
d 6 Max. fan speed at max. output in heating mode
Parameters: (Setting only for special functions or.
P 0 Burner capacity (Controller stop without HKM) 0 = min., 100 = max.
P 1 Room/flow temperature setting (without HKM)
P 2 Setting for hot-water temperature (without HKM)
P 3 Function not used
P 5 Steepness of heating curve
P 6 Parallel offset for heating curve
Note: Other parameters displayed are not used
1) Display: E = Flashing, G = Illuminated, H = Not illuminated
Parameters in the group "A" can be selected by momentarily pressing the display mode button
3) For error messages, see Table 13, Page 54, or instructions for EUROCONTROL controls
4) Display flashes alternatingly
5) Internal BMU SW diagnostic code (POTTERON Customer Service), selection of a few error codes
Code number Explanation:
295 Gas valve possible short circuit to ground
477 Parameter P1 (Table 6) > TkSNorm (Prog. No. 505)
479 Parameter P1 (Table 6) > TrSMax (Prog. No. 502
425/426/427 STB_Gradient (boiler temperature increases too rapidly)
433/435 STB_DELTA_T1, STB_DELTA_T3
(Delta-T too high for boiler flow and return)
531 Exit M5 is already used
6) For boilers without HKM or for heating curve setting for operation with heating circuit module HKM
Note: After 8 min. the display (15) automatically returns to the boiler temperature (A1)
30
3)
5)
6)
)
Remedy:
Check and eliminate (internal BMU fuse defective)
Adjustment error: Check settings and correct
Probably air in heating or hot-water system or no
water circulation; bleed boiler and heating system
Check parameter 615
For software version 2.08 and more: Put the desired extra-
function on the Relay Clip-In CIST, parameter 619, 620 and
621.
Adjustment range [Units] Temperature
[Code.No.]
[°C]
[°C]
[-- . --]
[Code.No.]
[Code.No.]
[°C]
[°C]
[°C]
[°C]
[°C]
[°C]
[°C]
(max. 30 µA) [µA]
[rpm]
[%]
[%]
[K]
[°C]
[°C]
(10 - 30 °C) [°C]
(10 - 65 °C) [°C]
(PHZ max.) [%]
(NHZ max.) [rpm]
(0 - 100) [%]
(10 - 30 / 20 - 75 °C) 20/55 [°C]
(10 - 65 °C) 45 [°C]
(1 - 40) 25 [Value]
(- 31 K ... + 31 K) [Value]
1)
Display
P
E E
4)
G H
E H
H G
H H
E E
4)
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G G
G E
G E
G E
G E
– –
G E
G E