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3.9.14.
Instructing the User ............................................................................................ 39
4.
S
ERVICING
I
NSTRUCTIONS
................................................................................................... 41
4.1.
General Requirements ............................................................................................. 41
4.2.
Servicing Instructions ............................................................................................... 41
4.3.
Replacing Parts ........................................................................................................ 42
4.3.1.
Pilot Assembly Replacement ............................................................................. 42
4.3.2.
Injector Replacement ......................................................................................... 42
4.3.3.
Control Valve Replacement (Mertik GV34) ........................................................ 42
4.3.4.
Motor Replacement (Remote/Optimum/Trim Switch Control)............................ 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
4.3.8.
Replacing the Ceramic Back and Sides ............................................................ 45
4.4.
Installation and Operational Troubleshooting ........................................................... 46