Skope ReFlex Underbench - Page 20

20
Electronic Controller
Service Manual
SKOPE Reflex Underbench Fridge and Freezer
15
Excessive condensing
temperature protection
The system was operating at
an excessive temperature and
has shut down to prevent
permanent damage.
Cartridge swap is not required.
• Very high ambient temperature
• Ensure that the cabinet is operating in its climate
class.
• Condenser is not clean
• 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.
• Condenser fan motor or blade
• Inspect the condenser and evaporator fans safely,
and replace if faulty.
• Incorrectly placed condenser
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.
• Replace the probe if required.
17
Control probe failure
A critical system sensor has
failed and the cabinet can no
longer operate.
Cartridge swap is not required.
• Control probe or circuit
• 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
• If you have replaced the probe and it is still
reading incorrectly, replace the controller.
18
Electrical over-current
protection activated
The compressor was drawing
too much current and has shut
down to prevent permanent
damage.
• 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.
• 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.
• Compressor or gas leak • Swap the cartridge.
Table 6: Alarms (continued)
Code Description Possible root cause Action