
Service
35
Service
Familiarize yourself with the replacement procedures and component parts thoroughly before attempting any repair.
Circuit Board
To replace the AccuSoft
™
circuit board, refer to figure 17 and the parts list and proceed as follows:
1. Lift up the front cover of the control.
2. Remove all connected wire leads from the board.
3. Remove the circuit board from the retaining clips on the front cover.
4. The new circuit board can be installed by reversing the steps 1-3 above.
Refer to Figure 18 for assembly and disassembly of the various valve components.
Figure 17
Warning! Disconnect all electrical power to the unit before servicing. Bypass the unit and relieve system
pressure before attempting to repair.
Caution!
Grip all connections to the circuit board by the connecting terminals for assembly and disassembly.
Failure to do so could result in damage to the wire leads or connecting terminals.
Caution!
Do not touch any surfaces of the circuit board. Electrical static discharges may cause damage to the
board. Handle the AccuSoft circuit board by holding only the edges of the circuit board. Keep replacement boards
in their special anti-static bags until ready for use. Mishandling of the circuit board will void the warranty.
Caution!
The wire connectors must be connected to the circuit board properly. The wires must exit the plug-in
connector opposite of the raised white base of the circuit board connector.