Micro-Master Touch User Guide
136
© 2014 Toro Australia Pty Ltd
Ver 1.2, June 2014
21.2
Fault Finding Flow Chart
Transformer Overload
Faulty Field Valves
Check Ambient Temperature
Location of Controller
in hot location.
Return for service
Start of
Test Routine
Run Diagnostics
Is Fuse OK
Transformer
Voltage
approx 27VAC
240VAC at
3 pin plug
Rectify 240VAC
problem
Replace Fuse.
Check Irrigation
Programs
Check Station
Output Voltage
Touch display
to unblank
Display On
Check Expansion
Module LEDs
Transformer
Resistance
approx 30 ohms
Check
Valve Currents
Check Fault
Reports
Isolate
Faulty Module
Controller Fault
Replace Module or
Return for service
Isolate
Faulty Module
Rectify Field
Wiring
No
Yes
Fail
No
Yes
No
OK
Yes
Fail
OK
Yes
Fail
OK
Yes
Fail
No
Fail
Controller Fault
Return for service
Figure 100 - Fault Finding Flowchart
21.3
Fault Finding - Possible Cause
Problem
Possible Cause
Correction
Wrong Time of Day
A power failure has occurred
and the Battery was flat
Set the time and replace battery
if required
Will Not Start an Irrigation
Program
Program Error
Stop Sensor is active
Check cycles/Day Table
Check Rain Switch
Check the Start Time
Check Water Budget
Check Sensor Reports
Check Sensor is inactive
Irrigation Time is Shorter than
Programmed
Auto Skip Fault has occurred
Stop Sensor was active
Program Error
Check fault table
Check Sensor Report
Check Runtimes, Water Budget
