Holman DIAL EZY N10372 - Manual (Page 13)

Possible Cause
Faulty transformer.
Fuse blown.
Faulty solenoid coil.
Incorrect wiring or bad
wiring joint.
Incorrect
programming or blown
fuse.
Short on keypad or
Programming not
correct.
Short on keypad or
too many start times
entered on automatic
programs.
Damaged main output
driver chip.
Faulty relay or pump
contactor.
Display damaged
during transportation.
Fault Finding Guide
Symptom
No display.
Single Station
not working.
Fuse blows.
No automatic
start.
Buttons on
keypad not
responding.
System
coming on at
random.
More than 1
station coming
on at once.
Pump start
chattering.
Display
cracked or
missing
segments.
Suggestion
Check fuse. Check field wiring.
Check transformer.
Swap faulty station wire on
controller terminal block with
known working station wire. If
the faulty valve still does not
work on the known working
connection then the solenoid coil
is faulty. The panel may need to
be repaired.
Check wiring and joints.
If unit works manually check
programming. Check fuse and
field wiring.
Check instruction book to ensure
programming correct. If keypad
still not responding return panel to
supplier or manufacturer.
Check number of start times
entered on each program. If
programming is correct return
panel to supplier or manufacturer.
Check wiring and swap faulty
station wire(s) on controller
terminal block with known working
station wire. If the same outputs
are still locked on, return panel to
supplier or manufacturer.
Electrician to check voltage on
pump relay or contactor.
Return panel to supplier or
manufacturer.
Follow these steps:
1. Turn mains power off to the controller.
2. Disconnect 24 Volt power leads from the plug pack
at the controller 24VAC terminals.
3. Clearly mark or identify all valve wires according to the
terminals they are connected to, (1 to 6). This allows
you to easily wire them back to the controller,
maintaining your valve watering sequence.
4. Disconnect valve wires from the terminal block.
5. Remove the complete unit from the wall.
6. Carefully wrap the complete unit in protective
wrapping and pack in a suitable box. Return to your
service agent or the manufacturer.
Note: Tampering with the unit will cancel the
Guarantee
7. Replace your controller by reversing this procedure.
Servicing The Controller
The controller should always be serviced by an
authorized agent.
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