Troubleshooting - ORELL FLY 11 Serie Manual De Montaje Y Servicio

12. Troubleshooting

Malfunction Conditions
It fails to cool The internal fan works, the external fan and
compressor do not work.
No component works
Compressor, external and internal fan work
Compressor and external fan work, internal fan
does not work
External and internal fan work, compressor does
not work
It is not cooling enough External and internal fans work, compressor
works all the time
Inside fan works, external fan and compressor
work irregularly
External and internal fans work, compressor
works irregularly
Too much condensate forming Enclosure door open
Enclosure door closed
Causes
The temperature inside the enclosure is lower than
what is set on the adjustment thermostat.
The adjustment (or antifreeze) thermostat has failed
No electricity getting to the unit.
Cooling unit empty of fluid
Compressor mechanical failure
Internal fan capacitor failed
Internal fan failed
Compressor's amperometric protector failed (external
to the compressor, where present)
Relay or PTC for compressor starting failed
Capacitor for compressor starting failed (where
present)
Compressor motor electrical failure
High pressure safety switch failed
Compressor contactor failed (where present)
Cooling unit under sized for the heat dissipated inside
the enclosure
Antifreeze thermostat triggered (where present)
Insufficient gas in the cooling unit
Thermostat set point incorrect
High pressure safety switch triggered:
• Ambient temperature over the maximum
working limit
• Heat exchanger coil (condenser) either dirty or
clogged
Thermal protector inside the compressor triggered:
•
Ambient temperature over the maximum work-
ing limit
•
Heat exchanger coil (condenser) either dirty or
clogged
Too much ambient air inside the enclosure
Enclosure protection level is below IP54
The enclosure/cooling unit connecting seal has been
fitted incorrectly
7
Remedy
This is not a malfunction of the cooling unit.
To verify functioning when testing, lower the thermostat setting
until the compressor and external fan start working and then reset
the thermostat.
Change the adjustment (or antifreeze) thermostat
This is not a malfunction of the cooling unit.
•
Make sure the power cable has been connected well to the
terminals.
•
Check that the cubicle doors and switches are closed
Call a refrigeration expert or the Manufacturer's Technical Assis-
tance Service
Call a refrigeration expert or the Manufacturer's Technical Assis-
tance Service
Change the internal fan's capacitor
Change the internal fan
Change the amperometric protector
Change the relay or PTC for compressor starting
Change the capacitor for compressor starting
Call a refrigeration expert or the Manufacturer's Technical Assis-
tance Service
Call a refrigeration expert or the Manufacturer's Technical Assis-
tance Service
Change the contactor
Change the cooling unit with another of greater capacity
• Clean the evaporator coil
•
See if there are any obstacles inside the enclosure to hinder the
flow of recycling air
Call a refrigeration expert or the Manufacturer's Technical
Assistance Service
Check thermostat setpoint
•
Ventilate the premises where the enclosure is installed to
keep ambient temperature lower.
•
Clean the exchanger with compressed air and detergent
•
Ventilate the premises where the enclosure is installed to
keep ambient temperature lower.
•
Clean the coil with compressed air and detergent
This is not a malfunction of the cooling unit. Close the enclosure
door or disable the cooling unit
This is not a malfunction of the cooling unit. Seal enclosure open-
ings, e.g. for passage and upward path of wires
Check seal and remedy
ENG