Specifications

TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
49
Fault Finding Chart 4.2
4.2
YES
Is a
comparator
fitted?
NO
Is a
solar bypass valve
fitted?
871024 & 871024-B models must have a
solar bypass valve or a comparator fitted
when used as an in-series gas booster. If
a solar bypass valve and a comparator
are fitted, remove the solar bypass valve.
If neither is fitted fit a comparator.
Is a
comparator
fitted?
YES
NO
4.3
NO
YES
Read
maintenance
information 3y
3y = Water temp
detected by water
inlet thermistor
Is the
water entering
the Integrity
> 57ºC?
YES
Water will flow straight through
the Integrity and the Integrity will
not operate. Normal operation.
Is the water
flow more than 3
litres/min?
Replace the PCB assembly.
YES
Is the
voltage between
connector B10 & 11
normal?
NO
NO
Test 28
Is the
voltage between
connector B9 & 10
normal?
YES
Test 29
YES
Is the
water flow sensor
working?
Test 32
NO
Replace the water flow sensor. If
the fault persists replace the
water body assembly.
Replace the comparator.
NO
YES
Read
maintenance
information 1y
NO
1y = Water flow
detected by water
flow sensor
Is the
flow sensor turbine
jammed?
Free the flow sensor turbine.YES
NO
Test 33
871020 & 871026, 871024 & 871024-B
models must have a solar bypass valve or
a comparator fitted when used as an in-
series gas booster. If a solar bypass valve
and a comparator are fitted, remove the
solar bypass valve. If neither is fitted, fit a
comparator