Control Unit
GFC 32
SIMATEK A/S
www.simatek.com
Hotline: +45 4046 7525
aftersales@simatek.dk
10
Doc. No.: 1400004_EN
Rev.: -
Date: 05.2017
12.
Troubleshooting
Problem
Probable cause
Solution
Display is blank and all LEDs are off.
No power supply.
Check the connections of the power
supply terminals [4] and the
selection of supply voltage.
Display shows all the numbers of the
outlets in quick sequence.
No outputs connected.
Check connection to the valves [2].
Some valves are ignored by the
Simatek GFC 32.
Wrong electrical connections between
Simatek GFC 32 and coils.
Check connections [2].
Coils are interrupted.
Check coils continuity.
Display shows the pulsing sequence
but valves are not functioning.
The secondary of the transformer is
interrupted.
Contact Simatek
Power circuit is damaged.
Contact Simatek
Supply voltage to valves is different
from voltage indicated on the coils.
Move jumpers [6] and [6A] in order
to select the same power supply as
indicated on the coils.
LED WD [18] is off.
Microprocessor failure.
Contact Simatek.
LED REMOTE [35] is off and Simatek
GFC 32 is in block.
The bridge on terminals Remote [26]
has been removed.
Replace the bridge on terminals
[26].
Contact on terminals Remote [26]
has been opened.
Close the contact on terminals
[26].
LED ALARM [17] is on.
Short circuit on one or more outputs. See paragraph 10.
IMPORTANT NOTE:
Should the Simatek GFC 32 unit be powered with 24 V DC, make sure inlet supply voltage is not lower than 24 V, and
that voltage is proportioned to connected loads.
13.
Fuse table
Dimension
Value
Type
No. on drawing
Description
5 x 20
1A
T
[23]
Main fuse with 115/230 V supply
5 x 20
2A
T
[23]
Main fuse with 24/48 V supply
5 x 20
200 mA
T
[31]
External contacts supply
5 x 20
630 mA
T
[32]
In5V supply (micro, display)
In case of replacement you must respect the values above.