Installation and maintenance manual ecoMAX 646
30
8.1.2 Diagnosis
codes
In the diagnosis mode, you can change certain parame-
ters or display more information (see following table).
• Press the “i” and “+” keys under the display simulta-
neously.
The display shows “d.0”.
• Scroll to the desired diagnosis number with the “+” or
“-” buttons.
• Press the “i” key.
The display shows the relevant diagnosis information.
• If necessary, use the “+” or “–” keys to change the
value (display flashes).
• Save the new value by holding down the “i” key for ap-
prox. 5 seconds until the display no longer flashes.
You can end the diagnosis mode as follows:
• Press the “i” and “+” keys simultaneously
or
• do not press any key for about 4 minutes. The current
heating supply temperature appears in the display
again.
8 Troubleshooting
Code
Meaning
Display value/adjustable value
d. 0
Partial-load heating
adjustable values in kW
d. 1
Pump run-out heating
1 - 60 minutes or “continuous” (factory setting: 5 minutes)
d. 2
Max. lockout time heating
1 - 60 minutes (factory setting: 20 minutes)
d. 3
With use of solar energy: collector temperature
actual value
actual value in °C
d. 4
Cylinder temperature actual value
actual value in °C;
with use of solar energy: actual value of the upper cylinder temperature sensor
d. 5
Supply temperature target value
target value in °C
d. 6
Cylinder temperature target value
target value in °C
d. 7
Cylinder temperature target value for VC appliances
target value in °C
d. 8
Terminal 3-4
0 = room thermostat open (no heating operation)
1 = room thermostat closed (heating operation)
d. 9
Terminal 7-8-9 target value
in °C (continuous controller)
d. 10
Internal pump
1 = on; 0 = off
d. 11
External pump
1 = on; 0 = off
d. 12
Storage charging pump
1 = on; 0 = off
d. 13
Circulation pump
1 = on; 0 = off
d. 14
Pump speed target value
target value internal pump in %. Possible settings: factory setting auto, 53, 60, 70, 85, 100 %
d. 15
Pump speed actual value
actual value internal pump in %
d. 16
Pump 2
1 = circulation pump; 2 = external pump;
3 = storage charging pump; 4 = solar pump
d. 17
Control type:
0 = supply temperature control; 1 = return temperature control
d. 22
Hot water request:
1 = on; 0 = off
d. 23
Operating mode
summer/winter mode: 1 = on; 0 = off
d. 24
Air pressure sensor actual value
actual value in Pa
d. 25
Hot water enabling via warm restart clock
1 = yes; 0 = no
d. 33
Fan target value
target value in upm/10
d. 34
Fan actual value
actual value in upm/10
d. 40
Supply temperature actual value
actual value in °C
d. 41
Return temperature actual value
actual value in °C
d. 42
Solar cylinder temperature actual value
actual value in °C;
with use of solar energy: actual value of the lower cylinder temperature sensor
d. 44
Ionisation current actual value
actual value/100 in A
d. 46
External temperature correction value
correction value in K
d. 47
External temperature actual value
actual value in °C
d. 50
Minimum speed offset
in upm/10
d. 51
Maximum speed offset
in upm/10
d. 52
Minimum air pressure offset
in Pa
d. 53
Maximum air pressure offset
in Pa
d. 60
Number of temperature limiting shutdowns
number
d. 61
Safety thermostat shutdown
number
d. 67
Remaining lockout time heating
in minutes
d. 68
No first start number
number of failed ignitions in the first attempt
d. 69
No second start number
number of failed ignitions in the second attempt
d. 71
Max. supply temperature heating
max. target value of the heating supply temperature:
adjustable value 40 - 85 °C (factory setting: 75 °C)
d. 72
Pump run-out hot water
pump run-out time in seconds after the charging of a hot water cylinder; factory setting: 80 s
d. 73
Activation difference for solar pump
recommended setting when using solar energy: +7 °C
.
d. 75
Max. charging time hot water cylinder
maximum charging time for a cylinder without its own controller
d. 76
Appliance variants
1 - 17
d. 77
Partial-load hot water cylinder
limitation of the storage charging output in kW
d. 78
Max. supply temperature hot water when using
solar energy: scalding protection temperature
limitation of the storage charging temperature in °C
when using solar energy: temperature at which the solar pump is switched off.
d. 80
Operating hours heating
in h
d. 81
Operating hours hot water generation
in h
d. 82
Burner starts - heating
number of hystereses in the heating mode x 100
d. 83
Burner starts - hot water mode
number of hystereses in the hot water mode x 100
Table 8.2 Diagnosis codes
