Rheem 871018 Service Instructions Manual page 39

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
Diagnostic Point 4
Conduct test with water flowing
Test Check Point
4 Blue – 6 White
9
3 Red – 4 Blue
1 Yellow – 4
10
Blue
Test 12 - Diagnostic Point 9
Conduct test with no water flow
Measure the voltage between terminals 1, 2
and 3 on connector J and earth. Voltage should
be between AC2 – 20V
TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by
Measured Value
DC120 -160V
DC11 -19V
DC4 –10V
(or measurement by
pulse counter of not
less than 4800
pulses per minute)
39
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
Test 11
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 13 - Diagnostic Point 12
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)