Wolf DGK 972-N Instructions De Montage page 5

Sequence:
Diagnosis of error cause:
Flashing code for manual
error shutdown:
Error rectification:
Blocking and resetting:
Reset button
Function test of the control
module:
3063511_201303
Replacement control module DGK 972-N
Lit phase
length 10 seconds
Error message
Error shutdown
Extraneous light error
Manual/external
error shutdown
Note:
The device remains in an error state and the cause of the error remains
displayed until the control module is reset.
Since the device is not reset by unplugging it from the base or by
interrupting the mains voltage supply, there is a waiting time of approx.
2 - 3 seconds after applying the mains voltage before the control module
goes into an error state again and displays the last error again.
Problem
Burner does not go into operation
An error is displayed 2 - 3 seconds
after power-on
Error shutdown after start-up
attempt without flame formation
Burner starts, flame forms; error
shutdown after expiry of the safety
time
In case of error the control module can be reset by briefly pressing the reset
button built into the cover; i.e. a new attempt is made to start up
If the button is pressed for longer than 3 seconds and then released during
normal operation or start-up, the device goes into the error state.
Note: The control module can only be blocked or reset when mains voltage is
applied!
After replacement of the control module a function test must be carried
out:
a) Start-up test with closed gas valve
- The control module must go into the error state after expiry of the safety
time!
b) Normal start-up; close the gas valve while the burner is in operation
- The control module must go into the error state after a new start-up and
expiry of the safety time!
Dark phase Flashing code Dark phase
length 0.6 seconds
Flashing code Error cause
Within the safety period
no flame recognition
Extraneous light
During monitored phase, sensor
is possibly defective
Possible errors
- Thermostat off
- Electrical supply faulty
- Mains voltage < 187 V
- Control module was not reset
- Flame signal during waiting time
- No fuel supply or ignition
- Flame signal too low or absent
- Wrong polarity, i.e. phase and neutral
swapped in mains supply
- Ionisation probe contaminated, broken or
shorted to ground
- Too little light on the flame sensor (IRD)
length 1.2 seconds
5