FAULT FINDING AND DIAGNOSTICS | 57
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Testing the component
▶ Select a component to test.
▶ Press the ok button, the value 0 will flash.
▶ Use the plus button to change the value to a flashing 1.
▶ Press ok to confirm the change, the value 1 will stop flashing and a
will displayed for 3 seconds.
The test will run for 30 to 60 seconds unless the value is changed back
to 0 before that time, the test may take 10 seconds to start.
Fig. 82 Testing component
Resetting the test component
After completing the test:
▶ Press the ok button, the value 1 will flash.
▶ Press the minus arrow button, the value will change to a flashing 0.
▶ Press ok to confirm the change, a will display for 3 seconds.
Fig. 83 Resetting test
°C
°F
°C
°F
t01
t01
°C
°F
t01
6720809859-60.1Wo
Test
Note that it could be up to 10 seconds after the button is
pressed before the selected component responds.
t1 Igniter test.
Checking the igniter
spark.
The igniter will spark for a maximum
of 30 seconds. The spark will be
audible if the igniter is OK.
t2 Fan test.
Checking the basic fan
operation.
The fan will run for a maximum of 30
seconds. If the fan is OK then the fan
will be heard running.
t3 Pump test.
Checking the basic pump
operation.
The pump will run for a maximum of
45 seconds. If the pump is OK then
the pump will be heard running.
t4 Three way valve test.
Test the operation of the
diverter valve.
When 1 is selected via the test menu
the diverter valve will move to the
DHW position. When 0 is selected
the valve will move to CH position.
t6 Ionisation oscillator test.
Tests the flame detection
circuit.
Ionisation circuit is switched on. An
A.C. voltage of approximately 150
Volts can be measured between the
ionisation probe and earth.
Table 32 Test menu
°C
°F
°C
°F
t01
t01
°C
°F
t01
6720809859-61.1Wo
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