Fault Finding Chart 3.7 - Rheem 871018 Service Instructions Manual

Fault Finding Chart 3.7

3 . 7
Outlet water
temp too high
Is error
code 16
displayed ?
NO
Malfunction of
water bypass
solenoid
Is error
code 56
displayed ?
TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by
* Is the
Integrity used as
YES
an in - series gas
Booster ?
unsuitable for use as
in-series gas boosters
NO
NO
Is the
resistance of the
proportional gas flow
regulating valve
normal ?
871024-B
871024-C
871026
871026-B
YES
Mechanic
al Bypass
model
NO
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
Is the
YES Integrity outlet temp
set at 60 ºC ?
*871018, 871020
871024, 871024-B
871026
YES
model heaters are
** Is the
Integrity inlet
water temp
> 77 ºC ?
Is a
solar bypass valve
fitted ?
NO
Is a
Comparator
fitted ?
NO
Is
Is the heater an
the heater an
871024-C or
871024 -
871026 model?
model ?
Test 15
YES
NO
Is the
Test 31
PCB supplying
power to the
solenoid ?
Note : the bypass solenoid is activated only
if the set temperature is below 46 degrees .
YES
46
Set the Integrity
NO outlet temp to
60 ºC
** Error code 16 will occur if the
Integrity heats the water to 20 º
above the set point 3 ºC .
60 + 20 - 3 = 77 ºC
YES
Faulty solar bypass valve .
YES Remove solar bypass valve
and fit a comparator .
YES Replace the comparator .
NO Fit a comparator .
YES
Replace the PCB assembly .
Replace the proportional gas flow
regulating valve .
NO Replace the PCB assembly .
Replace the water body
assembly .
3 . 8