Specifications

TM002 Integrity 18 & 20L Service Instructions REV: E
D.O.I: 7/11/2007
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35
Fault Finding Tests 9 – 13
Isolate power when conducting resistance tests. “Live” components present
during voltage tests, exercise caution
Tests 9 and 10 – Diagnostic Point 4 Test 11
Diagnostic Point 4
Conduct test with water flowing
Test
Check Point Measured Value
4 Blue – 6 White DC120 -160V
9
3 Red – 4 Blue DC11 -19V
10
1 Yellow –
4 Blue
DC4 –10V
(or measurement by
pulse counter of not
less than 4800
pulses per minute)
Isolate power before removing
connector plugs
Unplug connector J from the PCB and select
maintenance information 0y on the L.E.D
display.
If 01-07 is displayed the PCB has failed. If 00
is displayed there may be current leakage to
earth
Test 12 - Diagnostic Point 9 Test 13 - Diagnostic Point 12
Conduct test with no water flow
Measure the voltage between terminals 1 & 2
on connector J and earth. Voltage should be
between AC2 – 20V
Conduct test with water flowing
When ignition sequence commences, normal
voltage should be between AC 85 - 110V
until flame is detected.
(Note: Duration is approximately 3 seconds)