Specifications

TM002 Integrity 18 & 20L Service Instructions REV: E
D.O.I: 7/11/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
42
Fault Finding Chart 3.7
3.7
Is error
code 16
displayed?
**Is the
Integrity inlet
water temp
> 77ºC?
YES
Is a
solar bypass valve
fitted?
YES
Faulty solar bypass valve.
Remove solar bypass valve
and fit a comparator.
YES
Is a
Comparator
fitted?
NO
Replace the comparator.YES
Replace the PCB assembly.
NO
*Is the
Integrity used as
an in-series gas
booster?
YES
Fit a comparator.NO
Is the
heater an 871018-B
or 871020-B
model?
Is the
Integrity outlet temp
set at 60ºC ?
Set the Integrity
outlet temp to
60ºC
NO
YES
**Error code 16 will occur if the
Integrity heats the water to 20º
above the set point -3ºC.
60+20-3=77ºC
*875 series model
heaters are unsuitable for
use as in-series gas
boosters
YES
Is the
resistance of the
proportional gas flow
regulating valve
normal?
Replace the proportional gas flow
regulating valve.
YES
NO
NO
NO
Is error
code 56
displayed?
NO
Replace the PCB assembly.
YES
NO
Replace the water body
assembly.
YES
3.8
NO
Test 31
Test 15
Is the
PCB supplying
power to the
solenoid?
Note: the bypass solenoid is activated only
if the set temperature is below 46 degrees.
Outlet water
temp too high
Malfunction of
water bypass
solenoid
871018-B
875018-B
871020-B
875020-B
& *solenoid
bypass models
*Mechanical bypass
models
*For models without a -B suffix e.g. 871020NF compare appliance to wiring diagram
to determine whether it has a mechanical or solenoid operated bypass