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”
40
Fault Finding Chart 3.6
Is error
code 65
displayed?
YES
NO
Water flow
servo
malfunction
Tests 23,
24 & 25
3.6
Replace water body assembly.
3.7
Integrity
Temp set
below 46º.
Integrity
Temp set
above 46º.
Is
the bypass
solenoid open
circuit?
YES
Is the
PCB supplying
power to the
solenoid?
NO
Replace PCB assembly.
NO
Is
diagnostic point 18
normal?
Test 30
Note: the bypass solenoid is activated only
if the set temperature is below 46 degrees.
Is the
voltage at connector
between H2 & H8 and H7
& H8 normal?
Test 31
NO NO
Replace water body assembly.
YES
Tests 23 & 24
Is the water
flow servo motor at
ON position?
YES
Isolate and
then restore
power.
Is the water
flow servo motor
functional?
NO
Test 25
After power is restored the
water flow servo motor
limiter should move to the
fully open position
NO
Set the hot water
temperature at 60º
and fully open a
hot water tap.
YES
*Is
maintenance
information 5y
displaying
60?
NO
*5Y is the temperature of the
hot water outlet thermistor
YES
Is error
code 52
displayed?
NO
Is the
resistance of the
proportional gas flow
regulating valve
normal?
YES Replace PCB assembly.YES
Test 15
Replace the proportional gas flow
regulating valve.
NO
*Mechanical
bypass models.
YES
871018-B
875018-B
871020-B
875020-B
& *solenoid
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