19
4.
As 3, but no spark visible
Spark availability at electrode during spark period.
during ignition period.
Remove the spark lead from the electrode, hold with
insulated pliers 3mm from earthed metal. If a spark is
present examine the spark electrode for damage to
insulation and check the spark gap. If no spark is present,
check the continuity of the overheat switch and
connections. If satisfactory the control board is faulty.
5.
Heater lights but goes to lock out
Detection electrode and lead for short to earth. Gas supply
condition.
for continuity.
Air supply blockage.
Freedom of combustion fan rotor.
Possible control board fault.
Polarity of electrical supply.
SHORT PARTS LIST
Key
No.
G.C.
No.
Part
No.
off
RW No.
Key
No.
G.C.
No.
Part
No.
off
RW No.
Convection Fan Assembly, ITT
13LL RMM/Wx 1596
Combustion Fan: Torin DSA 300
101/2286
Gasket: Combustion Fan
Air Intake Duct
Gasket: Burner Mounting Plate
Injector: (Natural Gas) RW N.9
Electrode Assembly including
Key No. 40
Gasket: Electrode
Solenoid Valve
Gasket: Injector Holder
Pressure Test Nipple Screw
Printed Circuit Board
Electrode
389 283
389 282
203 796
203 797
393 344
203 798
393 570
203 799
203 750
400 001
991 470
204 080
17
26
28
29
32
35
39
40
42A
49
50
65
39A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
71
72
77
78
79A
80
81
82
83
84
85
87
94
99
Control Panel (
)
Overheat Limit Switch Otter V10c
Timer Unit - Sangamo 918801
(WARMPLAN XX AUTO)
Timer Clock Cover
(
AUTO)
Thermostat Ranco CA6P1916
Control Panel (
AUTO)
Red Neon Indicator
Amber Neon Indicator
Control Knob
Outer Case Assembly (not illustrated)
Dressing Strip
Bezel for Viewing Window
Gasket - Flue
Cable Clamp
WARMPLAN XX
WARMPLAN XX
WARMPLAN XX
203 811
393 346
383 561
203 814
385 799
203 815
203 816
203 817
203 818
203 819
203 820
203 821
202 915
203 825
1
1
1
1
1
1
1
1
1
1
1
1
1
1
990965
820953
822125
822126
820954
997914
820956
820955
998786
998575
998982
820968
930611
820752
1
998477
998569
998788
998797
998789
998483
998578
998791
987451
999234
999542
991470
820046
42A
65
17
71
79A
94
40
28
49
29
85
26
80
83
87
50
99
35
72
39
81/82
77
32
39A
78
