20
21
16. MAINTENANCE, TROUBLESHOOTING AND REPAIRS
To restore the timer to the
default
settings
1. Press the
button until the
START EVERY
is displayed and the
icon
appears on the bottom left of the screen.
2. Press and hold down the
for three seconds.
3. The screen returns to the home screen (clock) and all the default settings are
restored. The current time and date is retained.
PROBLEM:
Timer fails to open automatically or manually
CAUSE:
No water pressure
SOLUTION:
Open main water supply valve
CAUSE:
Flow control knob is turned down
SOLUTION:
Turn flow control knob clockwise to open
PROBLEM:
Valve/actuator functions via the manual mode only but
not automatically
CAUSE:
Timer is set to OFF mode
SOLUTION:
Verify that the timer does not show OFF in current time mode
CAUSE:
AM/PM not set correctly in current time mode
SOLUTION:
Check current time, change AM/PM if necessary
CAUSE:
AM/PM not set correctly in start time mode
SOLUTION:
Check start time(s), change AM/PM if necessary
CAUSE:
Rain delay is preventing watering
SOLUTION:
Set rain delay to off
CAUSE:
Yellow sensor wires have been cut
SOLUTION:
Re-connect sensor wires together with waterproof connector
The icon will only appear when sensor is active or if the wire has been cut.
Recommended rain sensors are the Rain Bird RSD and Hunter Mini-Clik
15. CHANGING THE BATTERIES
The RBC MVA timer’s batteries can last up to 3 years when using name-brand
AA alkaline batteries. Actual battery life will depend on the sensitivity of the
installed batteries to temperature ranges experienced by the timer as well as the
number of valve operations programmed per day. To ensure proper operation, it
is recommended that the RBC MVA timer be checked regularly and the batteries
replaced once the low battery indication starts flashing.
The RBC MVA timer is designed to maintain the current time settings for up to 60
seconds with the batteries removed.
To change the batteries, see section 5.
Note:
If the batteries are dead or drained, manual operation can also be
accomplished by turning the solenoid counterclockwise, or by turning the
external bleed screw counterclockwise. This will cause the valve to open.
Both must be turned clockwise to close the valve.
:
FIGURE B
SENSOR
WATERPROOF
WIRE CONNECTORS
YELLOW SENSOR
WIRES
