Specifications

TM040 16, 18 & 20L Continuous Flow Gas Water Heater Service Instructions
D.O.I: 2/06/2009
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
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Error Code 82
If error code 82 appears a new PCB is required to be fitted.
Error Code 99 & 10
Isolate power supply; clean the heat exchanger, fan and air inlet opening. Restore power
supply and attempt ignition. If the error code re-appears, replace the PCB.
Burner Gas Pressure Check
Voltages up to 240 volts will be present within the water heater, take care
not to touch wiring terminals. Use an insulated tool when operating the DIP
switch or MIN and MAX buttons.
Minimum Burner Gas Pressure
1. Remove the front panel from the water heater.
2. Remove burner pressure test point screw and fit manometer.
3. Connect a controller (if one is not present) and turn on.
4. Open a hot tap slowly, to achieve the minimum flow rate at which the burners will
ignite.
5. Press and hold the MIN button (“1L” is displayed on the controller) and observe the
reading on the manometer.
6. Release the MIN button. If the reading observed in step 5 agrees with the rating label,
no further adjustment is required.
Maximum Burner Gas Pressure
7. Open the hot tap fully to achieve maximum flow rate.
8. Press and hold the MAX button (“3H” is displayed on the display) and observe the
reading on the manometer.
9. Release the MAX button. If the reading observed in step 8 agrees with the rating label,
no further adjustment is required.
10. Turn the hot tap off.
11. Remove manometer and refit the burner test point screw ensuring the seal is gas tight.
12. Disconnect controller if connected in step 3.
13. Refit the front panel to the water heater.