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”
34
Fault Finding Chart 3
Ignition and Temperature Control
Is error
code 24
displayed?
YES
NO
Operation switch
malfunction
*Is error
code 31, 32, 33 or
34 displayed?
Thermistor
malfunction
Is error
code 61
displayed?
NO
Fan speed
abnormal
YES
Test 7
NO
Is error
code 24 shown on
error code display
also?
Replace the remote controller.NO
Also when
Min/Max button is
pressed?
YES
Release the Min/Max buttons and
re-open a hot tap.
YES
Replace the PCB assembly.
NO
YES
*Is the
resistance of the
relevant thermistor
normal?
*Thermistor error codes
31 = Water inlet thermistor
32 = Heat exchanger thermistor
33 = Hot water outlet thermistor
34 = Ambient air thermistor
YES
Replace the relevant thermistor.NO
Is
voltage being
supplied to the fan
motor?
Replace the PCB assembly.NO
Test 9
Test 8
Is
the fan motor
rotating?
YES
NO
Is a
pulse signal being
sent from the fan
motor?
NO
YES
Replace the PCB assembly.YES
Test 10
3
3.1
Replace the fan motor assembly.