Installation and maintenance instructions ecoCRAFT 0020055744_08
44
9.4 Test
programs
Special functions can be triggered on the appliances by
activating various test programs.
These programs are given in detail in the table 8.5.
The test programs P.0 to P.6 will be started when
"Power ON" is turned on and the "+" key is pressed for
5 s. The display shows "p.0".
• 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 "+" simultaniously to exit the test pro-
grams. You can also exit the test programs by not
pressing any key for 15 minutes.
Display
Meaning
P.0
Bleeding test programs. The heating circuit (combina-
tion boiler only) is bled via the automatic air vent (the
cap on the automatic air vent
P.1
Test program where the appliance is operated in full
load after sucessful ignition.
P.2
Test program whwere the appliance is perated with
minimumgas volume (ignition gas volume) after
sucessful ignition
P.3
not available
P.4
not available
P.5
Test programm for the safety temperature limit
check; appliance heats up by-passing a regulating
shutdown through the flow regulator until the shutoff
temperature of 110 °C is archieved.
P.6
not available
Table 8.5 Test programs
9.5
Resetting the interlock after switch-off by
the safety temperature limiter (STL)
1
Fig. 9.1 Resetting the interlock after switch-off by the STL
If error code "
F.20
" is displayed, the safety thermostat
(STL) has shut down the boiler automatically because
the temperature was too high.
Proceed as follows to reset it:
• Remove the front cover.
• Reset the STL by pushing the pin (
1
, Fig. 9.1).
Always troubleshoot and rectify the malfunction any
time the STL is triggered.
9.6 General
notes
No indications in the display
If the boiler does not start, and there is no display in the
read-out on the control panel, the following points
should be checked first:
– Electrical connection 230 V/50 Hz at the connection
plug.
– Main switch turned on?
– Check the 4 AT fuse in the boiler controller.
e
Danger!
The 4 AT fuse is at 230 V. The boiler will have
to be voltage free for checking and replace-
ment.
Boiler does not respond to the VRC 430, 630 or
VRS 620 controller
• Check the link between the "Bus" connections on the
controller and the boiler.
• Switch the VRC 630 or VRS 620 off and then on again
so that it reads in the devices on the bus afresh.
Boiler does not respond to the 2 point control sys-
tem
• Check on the System ProE whether the switch contact
between terminals 3 and 4 has been closed by the ex-
ternal controller.
h
Note
If a jumper is placed between terminals 3 and 4
and the ecoCRAFT goes into operation, then
the external controller must be checked.
Boiler does not respond to a request for hot water
• Check the settings of the regulator unit.
• Check the charging pump.
• Check the setting of the cylinder target value adjuster
on the boiler controller.
9.7
Measurements on the components
Ionisation current
The ionisation current is at least 1.5
A.
9 Troubleshooting
