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”
Maintenance Information
Information relating to both the current and past operation of the water heater can be
obtained from the memory; this information is referred to as the maintenance information.
The table below details the information that can be recalled from the memory i.e. to view
the current temperature being measured by the outlet thermistor select 5Y, refer to page
31 for the procedure to display maintenance information.
Maintenance Table
Left digit in LED display (Numerical)
Right digit in LED display (Alphabetical)
Error Code for the previous 8 faults
Sequence number of the previous 8 faults
Total combustion
starts X 10,000
Total combustion operations since last error X 10,000 hours
Total combustion
starts X 100
Total combustion operations since last error X 100 hours
Total combustion
period X 1000 hrs
Total combustion period since last error X 1,000 hours
Total combustion
period X 10 hrs
Total combustion period since last error X 10 hours
Flame sensor status (See
table below)
Water Flow Sensor
Litres / minute
Ambient Air Thermistor
temp. ºC
Water Inlet Thermistor
temp. ºC
Heat Exchanger
Thermistor temp ºC
Hot Water Outlet
Thermistor temp ºC
Opening angle of
Water Volume Control
motor in degrees
Fan motor current curve
(average)
Fan Motor current curve
- after tap closure
Fan Motor current curve
-present combustion
Bath fill flow volume drawn
Litres /minute X 10
18, 20, 24, and 26 L models
X = Flame sensor is not detecting flame. O = Flame sensor is detecting flame