Question
I have a sprinler system with a Toro TMC-212 controller. A couple of days ago I had the word "fuse" in the window. The installer came and reset the system. Today it did not start and the window says the code: dL y5. The installer surmised that the 212 is sensitive to electrical surges and needs a steady 120. It does not have a dedicated electrical but is just plugged into the wall--or I have a bad controller?

Help--and thanks

Answer
Hi Hank

The TMC-212 features built-in circuit protection to help prevent damage to the controller caused by excessive current draw on the station and/or pump/master valve circuits. If the controller detects an overload condition on a station, it will bypass the affected station(s) and display the word FUSE with the affected station number(s). All remaining stations will operate as programmed for automatic operation.

If the condition occurs on the pump/master valve circuit, the controller will alternately display
MV and FUSE and discontinue the program operation.

To clear the warning display, press the ?OFF button . The controller will continue to operate as scheduled and will attempt to run all stations as programmed.

IMPORTANT: Clearing the display does not correct the problem. The controller will continue to bypass the affected station(s) or discontinue operation until the overload condition is eliminated.

Before continuing to operate the controller, identify and remove the source of the problem. In most cases, this condition is caused by a faulty valve solenoid, pump start relay and/or shorted wire splice.

To clear the memory of all programs
Turn the control dial to the OFF position.
Press the NEXT button to access the clear memory
feature; CL will be displayed and begin flashing.
Press and hold the ?OFF button until CL stops flashing
(approximately five seconds). The memory will
be cleared to the default settings.
Return the control dial to the RUN position

Now reprogram your controller

Regards
Guillermo