Rain Jet RJC-4 Controller Error: Reset with Battery Removed

Error at Start Time: Display Shows 1A01

RJC-4 controller shows error at programmed start time (clock changes to 1A01). Reset attempted with battery installed.

Correct Reset Procedure

1. Remove backup battery.
2. Disconnect AC power.
3. Wait 30 seconds.
4. Reconnect AC power (battery still out).
5. Reprogram and test.

If Error Persists

Clean circuit board with canned air and soft brush. If still faulty, replace controller—RJC-4 is obsolete.