Burners
Check that the burners have not gone to lock-out.
Causes of lockout can be-
❏
No ignition, ignition electrode incorrectly positioned or insulation cracked, spark generator faulty, check for 230v
at spark generator.
❏
No oil supply.
❏
Poor combustion
❏
Photo electric cell incorrectly positioned, cracked or needs cleaning.
❏
Live and Neutral connections reversed.
❏
Oil valves not properly closed in shutdown position.
❏
Faulty control box.
❏
Faulty fire valve.
REFER TO FLOW DIAGRAM FOR ELIMINATION PROCEDURES
General
You can carry out some checks on the controls before you need to access the controls compartment behind the controls
door.
If only one of the burners is not running then the fault must be after the safety overheat thermostats.
Conversely if both burners are affected then the fault usually lies before the programmer connections.
For access to individual controls refer to section on Replacement Parts and for wiring continuity checks refer to Figs. 35,
36, 37 and 38 for detailed and schematic wiring layouts.
To check out the electrical wiring at the burners you will first have to have access to the burner chamber. Use the
following procedure:-
1.
Isolate the electrical power supply.
2.
Open up the bottom burner access door. Remove door and put in a safe place.
3.
Unscrew the 4 screws holding the inner panel in place and remove panel.
4.
Unscrew the 3 screws holding the louvered plinth in place and remove plinth.
The external mains connections are made to a terminal block situated in the front left-hand corner of the burner chamber.
Re-connect the electrical supply and check that there is a 230V power supply available across the mains input connections
L & N on the terminal block. If not then check connecting leads, fuse and whether power is available at mains plug.
If power is available across L & N then check to see whether the overheat cut-out switch has cut-out, if it has then reset
by pushing in the centre with a small, round tool i.e. a pencil. Check for continuity across cooker overheat thermostat.
30
BURNER DOES NOT START
Fault Finding
Summary of Contents for Heatranger 480D
Page 16: ...15 FIG 18 DESN 511140 Replacement of parts Electrical controls ...
Page 27: ...26 Electrical Controls CONTROL CIRCUIT BOILER FIG 35 ...
Page 28: ...27 Electrical Controls CONTROL CIRCUIT COOKER FIG 36 ...
Page 29: ...28 Fault Finding WIRING DIAGRAM BURNER ONLY FIG 37 ...
Page 30: ...29 Fault Finding WIRING DIAGRAM APPLIANCE FIG 38 ...
Page 34: ...33 ...
Page 35: ...34 ...
Page 36: ...35 ...
Page 37: ......