Rheem 310 Series Service Instructions Manual page 57

T sensor(s) (Procedure 18)
Wear Personal Protective Equipment when conducting step 2 of this
procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Isolate the power supply to the water heater.
2. Remove the access cover and confirm with a multi-meter between Active and
Neutral, then Active and Earth, then Neutral and Earth terminals of the terminal
block that voltage is not present.
3. Remove the air inlet louver (refer to Procedure 10).
4. Undo the controller cover retaining screw and remove the controller cover.
5. Unplug the T sensor plug from the control board.
6. Remove insulation surrounding T sensor (if applicable).
7. Remove sensor retaining clip and withdraw sensor. Note: Ambient air sensor is held in
place by a locking nut and evaporator sensor is held in place by a cable tie. Ambient air
sensor retainer can be manoeuvred out of cable tie. Do not cut cable tie as it is difficult
to replace.
8. Cut wiring loom cable ties and remove T sensor and wiring.
9. Complete reassembly in reverse order of above.
TM025 Rheem Heat Pump Service Instructions REV: B
Date of Issue: 02/08/07
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