Helmer (Version A) HB120(Versions A and B), Service Manual

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360077-1/O 50
i.Series® - All Models
Problem Possible Cause Action
All alarms are
activating sporadically.
Alarm system is faulty. ► Confirm the circuit board and line connections are
functioning correctly.
A component is
faulty or internal
connections are loose.
► Contact Helmer Technical Service.
Control board is faulty. ► Replace control parts with those that are included
in the control and display board kit.
Condenser alarm is
active.
Refrigerant level is too
low.
► Check refrigeration lines for leaks and repair if
necessary. Check the refrigerant level. Recharge
refrigerant if necessary.
Connections for
the condenser
temperature probe are
loose.
► Test the probe connections. Secure the
connections if necessary.
Condenser
temperature probe is
faulty.
► Test the probe. Replace the probe if necessary.
Condenser probe is
not calibrated.
► Confirm the condenser probe is reading correctly.
Calibrate the probe if necessary.
Compressor is
overheating due to
lack of airflow.
► Check the condenser grill. Clean it if necessary.
► Confirm the refrigerator is placed appropriately.
Refer to the operation manual.
Condenser alarm
setpoint is too low.
► Confirm the alarm setpoint is set at the appropriate
value.
A component is
faulty or internal
connections are loose.
►
Contact Helmer Technical Service.
An alarm activated,
but the temperature
recorded at activation
does not match the
alarm setpoint.
Monitor is not
calibrated.
►
Confirm the upper temperature probe is reading
correctly. Calibrate the probe if necessary.
Temperature changed
slightly around the
time of activation.
► No action needed.
No Battery alarm is
activating sporadically.
Battery voltage
level on the backup
batteries for the
monitoring system is
low.
► Replace the backup batteries for the monitoring
system.