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AGA DESN 515906, Servicing Instructions

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AGA DESN 515906 Servicing Instructions Download Page 26

Fault Finding

Cooker Burner (Control Box Type - DKO 970)
Information system

The information system communicates with the outside world using a LED (the used Flash-Code is similar to the Morse 

Code). The messages are optically transmitted by flashing appropriately a LED. Using an (optional) additional terminal the 

messages can be recorded and displayed in easily readable form.

Programming sequence display

The built-in microprocessor controls not only the programming sequence but the information system too. The individual 

phases of the programming sequence are displayed as Flash-Code.

The following messages can be distinguished:-

Fig. 36

26

Summary of Contents for DESN 515906

Page 1: ...GB IE REMEMBER when replacing a part on this appliance use only spare parts that you can be assured conform to the safety and performance specification that we require Do not use reconditioned or cop...

Page 2: ...BLEED AIR FROM OIL SUPPLY 15 FIT PRESSURE GAUGE 15 SWITCH ON ELECTRICITY 15 VENT OIL PUMP 15 ADJUST OIL PRESSURE 15 SET COMBUSTION AIR 16 CHECK SMOKE 16 REPLACEMENT OF FAN MOTOR 17 PARTS BURNER IGNITI...

Page 3: ...d other exposed parts When disposing of the product reduce dust with water spray ensure that parts are securely wrapped Kerosene and Gas Oil fuels mineral oils 1 The effect of mineral oils on the skin...

Page 4: ...e visit Annual Service During annual service flexible oil lines burner nozzles MUST BE CHANGED WIRING Ensure there is no damage or loose connections This should be carried out by a competent engineer...

Page 5: ...ters are being cleaned or a pressure gauge fitted to the pump then the oil supply should be turned OFF and arrangements made to catch any oil which will leak from the oil pump BURNER ACCESS SEE FIG 1...

Page 6: ...ng it away from the cooker BOILER BURNER SEE FIG 4 1 Place a sheet on the floor in the front of the cooker to act as a working area 2 Remove lower LH door and burner aperture cover and store in a safe...

Page 7: ...securing nuts and withdraw access door from below through burner aperture 2 Remove stack of 5 sheet metal baffles check assembly and replace as shown in Fig 7 3 Check aluminium twisted baffles are in...

Page 8: ...Cleaning 8 Fig 7 ALL BAFFLES MUST BE STACKED IN PLACE AS DIAGRAM ABOVE...

Page 9: ...e ribs on underside 7 Examine soft rope seal located around hotplate aperture in top plate and rope seal on hotspot Replace if frayed or damaged 8 Replace hotplate HOTPLATE REMOVAL SEE FIG 9 1 Lift up...

Page 10: ...slide forward and lift off keyhole slots See Fig 10 Clean in between fan blades using soft brush removing any debris Re assemble in reverse order NOTE Burners must be removed to access oven vent fan...

Page 11: ...the two burners mixed up The correct combination of burner blast tubes are shown To remove blast tube slacken two countersunk screws pull forward COOKER AND BOILER Countersunk screws in tube Fig 12 DE...

Page 12: ...nozzle holder with correct spanner when tightening nozzle 4 Typically finger tight plus 1 4 turn is sufficient DO NOT OVERTIGHTEN 5 Ensure electrode gaps are correct SEE FIG 15 Withdraw Photo Electric...

Page 13: ...ws and split fan case 3 Clean between the blades of the fan impellor with a small brush and remove any residue Re assemble the burner in reverse order 13 Burner Servicing FAN CLEANING RE ASSEMBLE BURN...

Page 14: ...with clean kerosene 5 Re assemble in reverse order OIL LINE FILTER CLEANING 1 Turn OFF the line isolating valve fitted prior to the oil line filter 2 Follow manufacturers instructions to remove filte...

Page 15: ...ner locking out This will be shown by the burner stopping and the illumination of the signal light in the reset button of the control box See Fig 19 IN THIS EVENT WAIT AT LEAST ONE MINUTE then press t...

Page 16: ...2 on the scale Replace the plugging screw and plug Switch off the boiler burner COOKER BURNER SEE FIG 24 Switch on cooker burner After 15 minutes of the cooker burner running Repeat the above procedur...

Page 17: ...o 3 and BURNER NOZZLE REMOVAL SEE FIG 26 1 Release two countersunk head screws and remove blast tube 2 Remove two screws and slide out nozzle support cradle c w ignitor assembly from burner head 3 Dis...

Page 18: ...tral fixing screw 2 Gently pull control box away from base 3 Fit new control box re assemble in reverse order SEE FIG 29 Follow instructions in section BURNER ACCESS Steps 1 to 3 1 Withdraw PEC from b...

Page 19: ...pply 2 Disconnect flexible hose This must be replaced annually 3 Remove solenoid plug 4 Remove feed pipe 5 Slacken three securing screws and remove pump 6 Check drive replace if worn or damaged 7 Repl...

Page 20: ...place in a safe position 5 Remove the two control panel fixing screws 6 Pull open facia controls chassis hinged on RH side and remove 3 pin plug from rear of control board RE ASSEMBLE 1 Re attach the...

Page 21: ...21 Fig 33 DESN 514774 Replacement of parts Electrical controls...

Page 22: ...22 Fault Finding Fig 34 Rayburn 680 780K CD Wiring 111MB for independent Satronic boxes KEY APPLIANCE G Y GREEN YELLOW BL BLUE OR ORANGE BR BROWN W WHITE R RED BK BLACK PL PURPLE GR GREY Y YELLOW...

Page 23: ...3 Fault Finding Fig 35 Rayburn 680 780K CD Wiring Diagram 111MB Self Contained Control KEY APPLIANCE W WHITE BR BROWN BL BLUE G Y GREEN YELLOW R RED BK BLACK OR ORANGE Y YELLOW GR GREY P PINK PL PURPL...

Page 24: ...ions For access to individual controls refer to section Replacement Parts and for wiring continuity checks refer to Figs 34 and 35 wiring diagrams To check out the electrical wiring at the burners you...

Page 25: ...flow sensor Heater_T1 was above 95 C 4 17 7 16 Overheat error detected on cooker Cooker temperature was above 270 C with the burner on 5 Sensor difference detected on cooker or heater Cooker sensors...

Page 26: ...lly transmitted by flashing appropriately a LED Using an optional additional terminal the messages can be recorded and displayed in easily readable form Programming sequence display The built in micro...

Page 27: ...re 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 187Veff 94Veff in order to allow th...

Page 28: ...tted by flashing apprioriately a LED Using an optional additional terminal the messages can be recorded and displayed in easy readable form Programming sequence display The built in microprocessor con...

Page 29: ...Fault Finding Fig 37A 29 DESN 516838...

Page 30: ...30 Fault Finding...

Page 31: ...31 Fault Finding...

Page 32: ...SOAKED HEARTH BURNER FAULT OIL LEAKS AT PIPE FITTINGS TAKE APART AND REMAKE AS REQUIRED LEAKS AT TUBING CONNECTORS ENSURE END OF TUBING SQUARE NUMEROUS LOCK OUTS CURE THE LOCK OUT CONDITION ODOURS IN...

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Page 40: ...of continuous product improvement the Company reserves the right to change specifications and make modifications to the appliance described at any time Manufactured by AGA Rangemaster Station Road Ket...

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