White Knight 43A, Installation And Service Instructions Manual

9

Chart 2.

Motor runs but full
sequence control does not
produce ignition spark

START

Exchange timer, Does control spark?

Does control spark with low heat
selected?

Change 50˚C exhaust thermostat
Does control spark?

Check continuity of red wire between
timer B2 and heat selector switch.
Are connections clean and tight.
Does control spark?

Exchange heat selector switch.
Does control spark?

Exchange both exhaust thermostats
(50˚C and 60˚C) and inlet thermostat
130˚C (brown wires)
Does control spark?

Exchange full sequence control unit.
Does control spark?

With timer ON (30 min) is voltage between output
B2 on timer and TB-N 230v?

Does control spark with high
heat selected?

Disconnect both red wires at timer B2. Reconnect
only red wire from heat selector to timer B2.
Caution the other red wire is live. Is voltage
between heat selector switch and TB-N 230V?

With red wire still disconnected is voltage between
output of heat selector switch and TB-N 230V at
high heat setting and zero volts at low setting.

Is voltage between brown wire in control box
multiway connector and TB-N 230V?

Check HT lead is connected to control and
electrode. Does control spark?

Check condition of ignition electrode and spark
gap is correct by removing heater assembly.
Does control spark? 

Does gas light? 

Does gas stay on? 

Machine operating. Instruct
users as necessary

Yes

Yes

No

Yes

No

No

No

No

Refer to chart 3

No

Refer to chart 4

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

Yes

No

No

No

Yes

Yes

Yes