A 0.75 Amp fuse protects the timer from damage due to
power surges and excessive current draw through the
Zone Modules. Before replacing the fuse, check for the
probable cause, such as a shorted or improperly connect-
ed control valve wire, then replace the fuse as follows:
1. Unplug the transformer from the wall receptacle.
2. Remove the lower front cover from the timer housing
by sliding it downward.
3. Carefully remove the blown fuse from the retaining
clip.
4. Remove the replacement fuse from the back side of
lower cover and install it into fuse retaining clip.
CAUTION: Never install a higher amperage fuse!
Severe damage to the timer can result.
5. Install the lower front cover.
6. Plug the transformer into the wall receptacle.
1. Turn the control dial to the
OFF position.
2. Remove the lower front cover from the timer housing
by sliding it downward.
3. Place the back of the zone module squarely between
the guides of the first open expansion slot (from left to
right). Pushing lightly on the bottom of the module,
slide it upward until it locks into position.
4. To connect the valve wires, refer to “Connecting The
Valves” on page 23.
5. Install the lower front cover.
6. To set the zone run time, refer to “Setting Zone Run
Times” on page 21.
7. To test the operation of the new watering zone(s),
refer to “Manual Operations” on pages 27 and 28.
Adding A Zone Module
Replacing The Fuse
Service and Specifications
31
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