Skope ReFlex Underbench - Page 22

22
Electronic Controller
Service Manual
SKOPE Reflex Underbench Fridge and Freezer
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.
28
No downward tendency
The temperature is no longer
decreasing.
• 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.
• Cartridge or cabinet gasket
seals 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.
• Door not self-closing or door
gasket leaking
• Open the door and let it go. If it does not close on
its own, repair the self-closing mechanism.
• If required, replace the door gasket.
• 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.
29
Compressor cutting out
The compressor cut out on its
internal protection or pressure
switch.
• 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.
• Cabinet, door, or cartridge
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.
Table 6: Alarms (continued)
Code Description Possible root cause Action