Rheem 310 Series Service Instructions Manual page 55

Control Board (Procedure 13)
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 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, remove the controller cover and unplug
power supply wiring loom, T sensors, circulator, fan and sensor strip plugs from control
board.
5. Mark and disconnect compressor wiring from control board.
6. Remove two screws retaining control board bracket to refrigeration base and remove
control board.
7. Complete reassembly in reverse order of above.
Relay (Procedure 14)
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 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, remove the controller cover and disconnect
wiring to compressor capacitor.
5. Remove cable tie retaining compressor capacitor and remove compressor capacitor.
6. Mark and disconnect wiring to relay, remove two relay retaining screws and remove
relay.
7. Complete reassembly in reverse order of above.
Compressor Capacitor (Procedure 15)
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 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, remove the controller cover and disconnect
wiring to compressor capacitor.
5. Remove cable tie retaining compressor capacitor and remove compressor capacitor.
6. Complete reassembly in reverse order of above.
TM025 Rheem Heat Pump Service Instructions REV: B
Date of Issue: 02/08/07
This document is stored and maintained electronically by
54
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".