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Turn off power. Remove front cover.
Disconnect connectors from T-7 and T-8 on control board.
Remove strain relief bushing where wires penetrate side of control box and feed sensor wires
out of control box.
On the suction line cut the cork tape and peel back exposing TXV bulb and strap.
Loosen strap and slide old sensor out.
Reverse procedure to reinstall being sure to reinsulate and reinstall strain relief bushing.
Turn off power. Turn off water. Remove front cover.
Remove wires from pressure switch.
Remove 2 screws holding control box back to coil on right side of control box.
Bend control box enough to get to back of flow switch.
Cut tubing as close to flow switch as possible.
Remove 1/2" nut holding flow switch to control box.
Install new switch and reverse procedure.
Turn off power. Remove front cover.
Cut high-pressure switch wires near switch.
Unscrew HP switch using back up wrench.
Use leak lock when reinstalling switch.
Remove strain relief bushing where wires penetrate control box.
Feed old HP switch wires out and new HP switch wires in.
Reinstall strain relief bushing.
Install spades at HP terminals on control board. Start and check unit operation.
Reinstall front cover.
Turn off power. Remove front cover.
Loosen 4 screws holding control board to cover.
Remove control board and let hang on wires.
Push 4 screws through board and install new board.
Remove wires from old board and install on new board one at a time, being sure to place
wires from same terminals from old board to new board as you are taking them off.
Turn power on. Start unit, check operation, and reinstall front cover.
R&R Defrost Sensor
R&R Water Pressure Switch
R&R High or Low Pressure Switch
R&R Control Board
Page 12
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