Bosch Worcester Greenstar CDi Compact ErP Series - Page 71

FAULT FINDING AND DIAGNOSIS
CDi Compact
ErP
- 6 720 813 276 (2015/07) 71
Fig. 133 Resetting test
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
max
min
max
2
3
1
04
bar
1
ok
eco
reset
e
°C
°F
t01
6720646608-80.2Wo
1.
°C
°F
Test 1
max
min
max
2
3
1
04
bar
1
ok
eco
reset
e
1.
°C
°F
t01
°C
°F
t01
max
min
max
2
3
1
04
bar
1
ok
eco
reset
e
1.
°F
t01
°C
°F
t01