Specifications

IN – M11C-B003/004/007 - 15 - © Future Products Group
TROUBLE SHOOTING continued
Lights not
working
When a cabinet alarm condition is present, the cabinet lights will go out to alert
staff of the alarm condition.
To determine the cause of the alarm condition, check the Carel controller
display and the LED status indicator lamps.
Carel Controller
Display Alarm
Codes
Alarm code “IA” indicates the fault is due to the refrigeration high-pressure
switch or low-pressure switch, tripping open circuit.
Alarm code “dA” indicates the fault is due to the drain pan condensate pump
float switch, reaching its high water level limit.
LED status
indicator lamps
“Boil-off/Pump failure” indicator lamp lit. This indicates that the fault is due to the
drain pan condensate pump float switch, reaching its high water level limit.
“Operational problem” indicator lamp lit. This indicates that the fault is due to the
refrigeration high-pressure switch or low-pressure switch, tripping open circuit.
Fault remedies
For “IA” and “Operational problem” lamp fault indication, carry out the following:
 Check for obstruction to the condenser airflow in and out of the cabinet
and rectify as required.
 Check and clean the condenser coil if required.
 Check the refrigeration system operating gas pressures and rectify any
faults as required.
For “dA” and “Boil-off/pump failure” lamp fault indication, carry out the following:
 Check the condensate pump pick up filter is not blocked, clean as
required.
 Check the operation of the condensate water pump and repair/replace
as required.
 Check the operation of the boil-off element, thermal cutout and element
controller. Repair, reset or replace as required.
 If no fault can be found with the above, drain the excess condensate
water from the system by disconnecting the blue plastic pipe from the
boil-off and place the end in a suitable container. Turn cabinet power on
and the pump will pump the water out of the cabinet into the container.
Turn the cabinet off and re-connect the blue pipe to the boil-off. Turn the
cabinet back on and check for correct operation. Most likely the excess
water was caused by an iced up evaporator coil. Check for likely causes
of an iced up evaporator coil.