5
Troubleshooting Tips
•
When checking continuity both ends of the harness to be tested should be unplugged (unless
otherwise noted). If either end is connected, the results may be inaccurate.
•
The freezer’s temperature control can be found on a small rectangular box that is mounted behind
the right, rear corner of the freezer. Turn the screw clockwise to make it colder, and counter-
clockwise to make it warmer.
•
The F820 uses several parts in multiple locations. These parts may be swapped during
troubleshooting to determine if the suspected part is faulty. These parts include the 24VDC motors
(4 locations) and the limit switches (5 locations).
•
Always keep a small jumper wire or small paperclip in your toolbox for troubleshooting.
•
Unless otherwise noted,
ALWAYS
remove power from the machine before testing any wires to
avoid electrical shock.
•
ALWAYS
remove power from the machine before removing or installing any money systems (coin
mech, bill acceptors, etc.) to avoid damaging the units.
•
Anytime the display reads “Out of Order”, press the “#” key to view the error message.
•
If you require assistance in troubleshooting, please have the serial number, error code and a
description of the problem available before calling. The toll free number to call is 1-888-441-3278
and press 2 for the service department.
•
If your meter does not have a continuity setting, set it to read OHMS (
Ω
). Hold the leads apart, the
meter should read 1 or OL. This means the circuit is open (no continuity). Touch the two leads
together, the display should show 0 (or something close to 0 like .0001). This means the circuit is
closed (has continuity). If you touch each lead to an end of a wire, you can determine if the wire is
whole or broken.
Transformer Reset Troubleshooting
Turn power off. Unplug connector J18 from the main computer board. Reset the breaker and turn the power
on. Does the breaker trip?
NO – Unplug 1 motor at a time, resetting the breaker in between until the reset does not trip. This
is the faulty motor.
YES – Reconnect J18 and unplug J1 from the computer board. Reset the breaker and turn the
power on. Does the breaker trip?
NO – There is a short in the computer board. Replace the computer board.
YES – Reconnect the J1 connector. Behind the transformer is a square, black rectifier.
Unplug the two wires from the right side of the rectifier that go to the 24v fan. Does the
breaker trip?
NO – There is a short in the rectifier or fan.
YES – Call Fastcorp Service for furthur assistance.
