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”
21
Operational Flow Charts
Plug In
Power On
Operation Flow Chart 1
1
Initial
check
normal?
Functional
problem on gas
type circuit board
Communication
problem between
remote controller
and the heater
Fan motor current
detection failure
G.I.S.V control
failure
82 Flashing 76 Flashing
79 Flashing 71 Flashing
Error code cleared Isolate Power
Remote controller
switched on
Remote controller
switched off
Remote controller
display off
Remote controller
display on
On/Off lamp Off
On/Off lamp On
Fan On
Fan Off
10 seconds later
5
14 Flashing
Over heat limiter
failure
Water Flow Sensor
off
Hot water tap closed
Hot water tap open
2
Water
flow sensor
on?
3
Max & Min
buttons off?
YES
24 FlashingNO
20 seconds later
Fan On
Fan On4
Inlet
thermistor
ok?
5 31 FlashingNO
Heat
exchanger
thermistor
ok?
YES
32 FlashingNO
Outlet
thermistor
ok?
6
33 FlashingNO
YES
7
Ambient
air thermistor
ok?
YES
8 34 Flashing
Fan
speed
normal?
YES
4 61 FlashingNO
5 seconds later
NO
YES
False flame
detected?
YES
9 72 FlashingYES
5 seconds later
Leakage >
than 0.1uA
P.G.F.R Valve on
NO
10
1
2
Y
Input temp
> 60ºC or > set
temp?
NO
YES
NO
NO
YES
Input temp
< or = 58ºC &
< or = set temp
- 2ºC?
YES
871018-B / 875018-B
871020-B / 875020-B
871018 / 875018
871020 / 875020
F
F1
Note: see page 20 for details on interpreting chart abbreviations.