Skope ReFlex Underbench - Page 21

21
SKOPE Reflex Underbench Fridge and Freezer
Electronic Controller
Service Manual
19
Failed to reach set
temperature
The refrigeration system has
been operating continuously
for a long period without
reaching the set temperature.
• Blocked condenser
• Remove and clean the condenser filter.
• Check that the condenser is free of debris.
• If the coil is dirty, clean it with a vacuum cleaner or
soft brush.
• Poor installation or ventilation • Check the installation guidelines.
• Frozen or blocked evaporator
coil
• De-ice the coil and check the that evaporator fan
motor is working.
• Check the defrost cycle and that the defrost probe
is working correctly.
• Cartridge, cabinet, or door
gasket leaking
• Check that the gasket is intact and not broken and
leaking. If required, replace the door gasket.
• Ensure the installation levers are lifting the
cartridge up onto the case correctly.
• Product blocking cabinet airflow
• Check if the return air grille is covered by product.
If so, move the product from the grille and
observe.
• Compressor is overloaded from
excess door openings or
ambient temperature
• Ensure that the cabinet is operating in its climate
class.
• Condenser or evaporator fan
motor or blade
• Inspect the condenser and evaporator fans safely,
and replace if faulty.
• Controller
• The controller may be reading incorrectly and
need replacing.
• Compressor or gas leak • Swap the cartridge.
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.
Table 6: Alarms (continued)
Code Description Possible root cause Action