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4.3. Replacing Parts...................................................................................................... 42
4.3.1. Pilot Assembly Replacement ........................................................................... 42
4.3.2. Injector Replacement ....................................................................................... 42
4.3.3. Control Valve Replacement (BM or Mertik GV34) ............................................ 42
4.3.4. Motor Replacement (Remote Control / Optimum Control Models) .................... 43
4.3.5. Replacing Mertik GV60 Valve (Total Control) ................................................... 44
4.3.6. Replacing the Receiver (Total Control) ............................................................ 44
4.3.7. Programming Handset to Receiver (Total Control) ........................................... 44
4.4. Installation and Operational Troubleshooting ......................................................... 45