Wittenborg FB 7100 - Page 40

Service Manual FB 7100 Event recording and troubleshooting
3 - 12 January, 2005
Coins stuck
Drinks are too cold
The water quantity
delivered is too
low or irregular
No water is
dispensed
Only water is
dispensed
Short-circuit on print board Using a voltmeter, measure voltage
across inlet valve terminal.
• A constant voltage (of 24 V DC)
indicates a controller fault.
• Change the VMC.
See chap. 5K, page 5K-12
Possible cause Remedy
Possible cause Remedy
Coin may be stuck in the coin
mechanism
Press the coin return button.
Coin track dirty or greasy Open coin rejector and clean coin track.
See manual for coin mechanism
Foreign body stuck in coin track Open coin rejector and remove foreign
body.
See manual for coin mechanism
Possible cause Remedy
Wrong temperature setting Readjust temperature setting either via
the Technician menu, (see
chap. 4,
page 4-65) or from a pc.
Possible cause Remedy
Boiler blocked by limescale build-up or
defective
Check boiler and descale if required or
replace.
See chap. 5A, page 5A-4
Water supply lines are blocked Check the water supply lines and clean
them if required.
Water valves are incorrectly calibrated Calibrate the water valves either via the
Technician menu (see
chap. 4, page 4-
64) or from a pc.
Possible cause Remedy
Water supply lines are blocked Check the water supply lines and clean
them if required.
Possible cause Remedy
Canister is empty Refill.