49
Instructions for installation and servicing ecoTEC
8.4 Test
programs
Special functions can be triggered on the appliances by
activating various test programs.
These programs are given in detail in the
Table 8.4.
• The test programs P.1 to P.6 will be started when
“Power ON” is turned on and the “+” key is pressed
for 5 s. The display shows “P.1”.
• Press the “+” key to start counting the test number
upwards.
• Press the “i” to operate the appliance now and to start
the test program.
• Press “i” and “+” simultaneously to exit the test pro-
grams. You can also exit the test programs by not
pressing any key for 15 minutes.
Display
Meaning
P.1
Test program where the appliance is operated in full
load after successful ignition
P.2
Test program where the appliance is operated with
minimum gas volume (ignition gas volume) after suc-
cessful ignition
P.3
not available
P.4
not available
P.5
Test program for the safety temperature limit check;
appliance heats up by by-passing a regulating shut-
down through the flow regulator until the shutoff tem-
perature of 97 °C is achieved.
P.6
not available
Table 8.5 Test programs
8.5
Resetting parameter to factory settings
Besides the option to reset individual parameters manu-
ally to the factory settings specified in Tables 8.2 and
8.3, you can also reset all parameters simultaneously.
• In the second diagnosis level, under the diagnosis
point “
d.96
” change the value to 1 (see Section 8.1.2).
The parameters of all adjustable diagnosis points now
correspond to the factory settings.
9 Parts
replacement
The tasks listed below in this section may be carried out
only by a qualified engineer.
· Only use genuine spare parts for repairs.
· Make sure the parts are correctly fitted and that their
original position and alignment are retained.
9.1 Safety
instructions
Danger!
Each time the components are replaced, comply
with the safety instructions below for your own
safety and to avoid damage to the appliance!
• Put the appliance out of operation.
Important:
Before starting any maintenance work:
Isolate the mains electricity supply by discon-
necting the plug at the socket outlet (if there is
only an isolating switch remove the fuse from
the switch).
• Close the maintenance taps in the gas supply as well
as the in the heating flow and return pipe.
• Close the maintenance tap in the cold water supply
line (only 800 series)!
• Empty the appliance if you want to replace water-bear-
ing components of the appliance!
• Make sure that no water drops on live components
(e.g. switch box etc.)!
• Use only new seals and O-rings!
• After completing the work, check for gas leaks and
perform a function check (see Section 7.6)!
• Always check earth continuity, polarity and resistance
to earth with a multimeter after any service work and
after exchanging any electrical component.
9.2 Replacing
burner
Danger!
Before replacing the component, comply with
the safety instructions in Section 9.1.
• Dismantle the compact thermo module as described in
Section 7.2.1.
1
Fig. 9.1 Replacing burner
• Loosen the 4 screws (
1
) on burner, and remove the
burner.
Troubleshooting 8
Parts replacement 9
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