Cooker Burner (Control Box Type - DKO 970)
In case of failure the LED is permanently illuminated. Every 10 seconds the illumination is interrupted by a flash code which
indicates the cause of the error. Therefore the following sequence is performed which is repeated as long as the unit is
not reset.
Sequence:
Stray Light Monitoring
The stray light check is performed at the end of the pre-purge timer for the duration as mentioned in the table of timings.
Low-voltage protection
at 220 / 240V (110 / 120V) nominal usage
The mains voltage has to be more than 187V
eff
(94V
eff
) in order to allow the unit to perform a start-up.
The mains voltage is not only mentioned in the start-up phase but also permanently during operation. If the voltage drops
below <160V
eff
(80V
eff
) during start-up or run time the control box goes into lock-out mode. If the voltage rises again, the
control box performs automatically a start-up as soon as the mains voltage is >187V
eff
(94V
eff
).
Fault Finding
35
Summary of Contents for Heatranger 440
Page 9: ...Cleaning Fig 6A 9...
Page 22: ...22 Fig 28 DESN 513150 Replacement of parts Electrical controls...
Page 30: ...30 Electrical Controls CONTROL CIRCUIT BOILER Fig 37 L1...
Page 31: ...31 Electrical Controls CONTROL CIRCUIT COOKER Fig 38 L2 L2 KB MODEL ONLY...
Page 32: ...32 Fault Finding WIRING DIAGRAM APPLIANCE 440 460 480K 499K Fig 39...
Page 37: ...Fault Finding 37 Fig 41A DESN 516838...
Page 38: ...38 Fault Finding...
Page 39: ...39 Fault Finding...
Page 40: ...40 Fault Finding...
Page 41: ...41 Fault Finding...
Page 43: ...43...