Fault Finding - Nordcap ROLL-IN 1P TN Notice D'installation, D'emploi Et D'entretien

1 ABNORMALLY HIGH PRESSURE
2 ABNORMALLY LOW PRESSURE
3 COMPRESSOR PROTECTIONS
4 SENSOR FAILURE
5 THE COMPRESSOR DOES NOT START
6 EVAPORATOR WITH EXCESSIVE FROST / ICE
7 THE COMPRESSOR RARELY STOPS
8 THE APPLIANCE IS NOISY
9 OVERFLOW OF SELF-EVAPORATING DRAINPAN
The following list has been prepared as a guideline to the search of
possible remedies to some anomalies that could be found in the appliance,
it should be understood that this list does not cover all possible cases. If a
safety device trips, this signals an anomaly in operation; before resetting it,
check and eliminate the cause. The list below gives some of the problems
that may be found with their relevant cause and remedies (in bold print).
WARNING
THE OPERATIONS GIVEN ARE THE SOLE RESPONSIBILITY OF THE
PERSON WHO CARRIES THEM OUT, AN AUTHORISED SERVICE
CENTRE MUST BE CONTACTED AS THEY HAVE THE NECESSARY
REQUISITES TO CARRY OUT THE OPERATIONS NECESSARY TO
RESTORE NORMAL OPERATION.
IMPORTANT
BEFORE BEGINNING ANY MAINTENANCE WORK ON THE
APPLIANCE DISCONNECT THE ELECTRIC MAINS SUPPLY.
inconvenience
1 ABNORMALLY HIGH PRESSURE.
cause 1.1
DIRTY CONDENSING COIL.
With the compressor operating use a gauge to measure the
condensing pressure. With a condenser inlet air temperature of +32C
the difference between the saturated condensing pressure and the air
temperature must be around 10 °C.
remedy
If the difference is found to be above this value clean according to
the " CLEANING AND MAINTENANCE " section at point 2.1.
cause 1.2
THE CONDENSER FAN DOES NOT WORK.
With the compressor operating the fan must operate.
remedy
Before replacing the fan disconnect the supply voltage and
check the electric connections are in good order.
cause 1.3
IMPURITIES PRESENT IN THE CIRCUIT.
If impurities are present the difference between the saturated
condensing pressure and the ambient air temperature will be over 10
°C.
remedy
Remove all the refrigerant in the circuit, create a vacuum equal or
below 100Pa, charge the circuit with the quantity of refrigerant
given on the serial plate.

FAULT FINDING

21
cause 1.4
FEEBLE AERATION OF THE ZONE AROUND THE TECHNICAL
COMPARTMENT.
remedy
Remove any obstructions to a correct circulation of the inlet
/outlet air to the condenser.
cause 1.5
APPLIANCE HAS JUST BEEN STARTED-UP.
If the appliance has been recently started-up and the fridge
compartment has just been filled food stuffs this inconvenience may
be occur.
remedy
It is merely a temporary phase that will disappear the moment the set
point temperature has been reached. No remedy needed.
2 ABNORMALLY LOW PRESSURE.
cause 2.1
CAPILLARY PARTIALLY BLOCKED.
remedy
Replace the capillary with another of identical dimensional
characteristics.
cause 2.2
DIRTY FILTER DRYER.
With a contact thermometer measure the refrigerant temperature
before and after the filter, a temperature difference of more than 1 °C
is a symptom that the filter has lost efficiency and should therefore be
changed.
remedy
Replace.
cause 2.3
FEEBLE REFRIGERANT CHARGE.
remedy
Eliminate any leaks, if necessary pressurise the circuit to
emphasise them, carry out the vacuum and charging operations.
3 TRIPPED COMPRESSOR PROTECTION.
cause 3.1
THE THERMOSTAT DOES NOT COUNT THE DELAY TIME.
Adjacent start-ups don't allow the pressures the equalise.
remedy
Check relevant parameter and restore to factory setting if
necessary.
cause 3.2
SUCTION GAS TEMPERATURE ABOVE THE OPTIMUM VALUES.
remedy
-Check that the expansion device is working correctly.
-Check the refrigerant charge and eventually for any leaks, if
necessary pressurise the circuit to emphasise them, carry out
the vacuum and charging operations.