Fault Finding Chart 4.2 - Rheem 871018 Service Instructions Manual

Fault Finding Chart 4.2

4.2
Is a
solar bypass valve
fitted?
NO
Is a
comparator
fitted?
YES
Read
maintenance
information 3y
3y = Water temp
detected by water
inlet thermistor
Is the water
flow more than 3
litres/min?
NO
Test 28
Is the
voltage between
connector B10 & 11
normal?
YES
Test 29
Is the
voltage between
connector B9 & 10
normal?
NO
Test 32
Is the
water flow sensor
working?
TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by
Is a
YES comparator
fitted?
NO
4.3
Is the
water entering
the Integrity
> 57ºC?
NO
Read
maintenance
information 1y
Is the
flow sensor turbine
jammed?
NO
YES
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
871020 & 871026, 871024 & 871024-B
871024 & 871024-B models must have a
models must have a solar bypass valve or
solar bypass valve or a comparator fitted
a comparator fitted when used as an in-
when used as an in-series gas booster. If
series gas booster. If a solar bypass valve
YES
a solar bypass valve and a comparator
and a comparator are fitted, remove the
are fitted, remove the solar bypass valve.
solar bypass valve. If neither is fitted, fit a
If neither is fitted fit a comparator.
comparator
NO
YES
1y = Water flow
detected by water
flow sensor
YES
NO
YES
Test 33
YES
NO
49
Water will flow straight through
the Integrity and the Integrity will
not operate. Normal operation.
Replace the PCB assembly.
Free the flow sensor turbine.
Replace the water flow sensor. If
the fault persists replace the
water body assembly.
Replace the comparator.