17
SKOPE OD1100N
Electronic Controller
Service Manual
20
Over-cooling product
The internal temperature is too
low. The system has
temporarily shut down until the
temperature has returned to
normal.
• Set temperature has been
raised by a large amount
1. Confirm if really too cold.
2. Change parameters accordingly.
• Controller
• The controller may be reading incorrectly and
need replacing.
22
Evaporator fan over-current
protection
The current supplied to the
evaporator fan motor is too
high.
• Faulty fan motor
• Replace the fan motor.
• Fan blade fault (imbalance,
debris, blockage)
• Visually inspect the fan blades and replace if
faulty.
23
Condenser fan over-current
protection
The current supplied to the
condenser fan motor is too
high.
• Faulty fan motor
• Replace fan motor.
• Fan blade fault (imbalance,
debris, blockage)
• If the fan motor is working correctly, update the
controller firmware to the latest version.
• Controller
• The controller may be reading incorrectly and
need replacing.
24
Controller communication
error
Controller has lost
communication channels.
• Parameters
• Load the correct parameter settings.
• Controller or circuit
• The controller may be reading incorrectly and
need replacing.
25
Controller update failed
Controller update could not be
completed.
• Parameters
• Load the correct parameter settings.
• Controller or circuit
• The controller may be reading incorrectly and
need replacing.
26
Controller hardware failure
Controller hardware has failed.
• Parameters
• Load the correct parameter settings.
• Controller or circuit
• Replace the controller.
27
Probe failure
A probe other than the control
probe has failed. The cabinet
will continue to operate with
partial function but requires
service.
Cartridge swap is not required.
• Evaporator probe or
connections
• Either:
•
Measure the probe resistance to make sure it
is within the range.
•
Compare the probe’s temperature with the
known temperature, using an external trusted
thermometer.
• Replace the probe if required.
• Controller
• The controller may be reading incorrectly and
need replacing.
30
Excessive automatic
defrosting
The system is automatically
defrosting too frequently.
• Evaporator probe
Either:
• Measure the probe resistance to make sure it is
within the range.
• Compare the probe’s temperature with the known
temperature, using an external trusted
thermometer.
• Evaporator motor or fan
• Check that the fan motors are working and the fan
blades are not damaged.
• Controller
• The controller may be reading incorrectly and
need replacing.
• Blocked drain
• Clear the blockage with a wet vacuum.
• Clear the debris to prevent a blockage.
• Defrost setting too high
• Reload the correct parameters using the SCS
Connect Field app.
• Compressor or gas leak
• Swap the cartridge.
Table 4: Alarms (continued)
Code Description
Possible root cause
Action
