26
Model R280
Error 6
Instructions for
Diagnostic Function
d08
Press Up arrow to
U4.
Press twice.
Up arrow from d01
to d08.
Press once.
Press up arrow to
change "ER NO" to
"ER YES".
Press twice.
Temperature should
be displayed.
Dirty condenser and/or filter. Clean the condenser and filter. Use function d08 to reset the
error.
Power outage. A power outage disrupts the feedback loop causing an error 6.
Faulty power cord. A faulty power cord may cause a disruption in the feedback loop.
Replace a damaged power cord.
High ambient temperature. Room temperatures should be kept below 90°F (31°C).
Faulty feedback or refrigeration relay. An intermittent or unexplained error 6 may be caused by a faulty
refrigeration (SW2) or feedback relay (SW3). This can be difficult
to diagnose. Verify the refrigeration relay is receiving a signal
from the controller.
Note: There is a short cycle delay of about 2 minutes after the
Dispenser is turned on.
Faulty condenser fan. The condenser fan and compressor should be running at the
same time. If the compressor starts to run but the condenser fan
does not, the condenser fan motor is faulty.
Faulty compressor or compressor start
components.
Verify if compressor will run if power is applied to it. Check start
components and wiring.
Faulty controller (rare). Verify the controller is sending voltage to the refrigeration relay
(SW2). Note: There is a short cycle delay of about 2 minutes after
the Dispenser is turned on.
Error 7
*Error must be reset
using diagnostic
function d08
Power interruption. Rare but should be eliminated first. Use diagnostic function d08
to reset error.
Faulty refrigeration or feedback relay. Verify there are no wiring problems first, then replace the relays
(SW2 and SW3).
Error 8 Faulty temperature probe. Function d05 is used to verify the cabinet temperature probe
input (d06 should also be used to check the second control probe
on Dispensers using two probes, revision letters A, B and C).
Replace the faulty temperature probe.
Error 9 Checksum error. Press the diamond, Enter button, or cycle power. This
error is normally only seen when a new controller and/or
processor is installed.
If the error persists, verify the processor is securely mounted to
the controller. Cycle power.
If above actions do not eliminate error, the controller and
processor will need to be replaced.
No display ON/OFF switch off or tripped. Verify ON/OFF switch is on and illuminated. If not, check switch,
switch harness, power cord, and check for short.
24V circuit breaker tripped. Verify Dispenser is assembled properly, particularly the flap
doors. Reset circuit breaker in the back, labeled CB1.
Display board connector is not attached
to the board or the processor is not
properly seated.
Detach and reconnect the white six-wire harness at the display
PCB and the main controller.
Verify processor is fully seated on the controller.
Faulty display PCB. If the items listed above are correct and the 24V power indicator
is lit, replace the display PCB.
Problem Probable Cause Corrective Action
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