Carrier AQUASMART 30EX Series Installation Operation & Maintenance page 55

ERROR
TYPE OF ERROR
CODE
Low Suction
Pressure
Note: Occurrence
E-10
of more than 3
times E-08 at 1
hour interval.
High Discharge
Pressure
Note: Occurrence
E-11
of more than 3
times E-09 at 1
hour interval.
Error/failure in
communication
E-12
between control
and unit
High discharge
E-13
temperature of
compressor 1
High discharge
E-14
temperature of
compressor 2
E15
DIPs settings
CONSEQUENCE
of ERROR only on of ERROR only on
Chiller 1 (Master) Chiller 2 to 8 (Slaves)
It only turns off the faulty unit.
The system won't reset automatically.
It only turns off the faulty unit.
The system won't reset automatically.
No unit in the system works.
I only turns off the faulty compressor.
I only turns off the faulty compressor.
No unit in the Only the unit with
system starts. error won't start.
CONSEQUENCE
With the unit running measure suction pressure.
Check pressure switch actuation. Replace
the component as necessary. Check/correct
leaks/obstructions in the low circuit.
Evaporator cleaning. Replacement of
fi lter drier. Check refrigerant charge.
With the unit running, measure
discharge pressure.
Check pressure switch actuation.
Replace the component as necessary.
Check / correct blocking obstructions
in the high/condenser circuit.
Condenser cleanliness. Check
refrigerant charge.
Check and correct communication
between the unit and control
Check for any cable breaks or loose connection.
Check/correct:
Discharge temperature sensor of compressor 1.
Also check through the condenser
middle temperature sensor (CMCT)
Condenser fan motor speed.
Refrigerant charge. Condenser cleanliness.
Obstruction inside the cooling circuit
(plugged fi lters, valves, etc.)
Check/correct:
Discharge temperature sensor of compressor 2.
Also check through the condenser
middle temperature sensor (CMCT)
Condenser fan motor speed.
Refrigerant charge. Condenser cleanliness.
Obstruction inside the cooling circuit
(plugged fi lters, valves, etc.)
Turn off the unit with error.
Note: For the Master unit it is important
to wait at least 1 minute after the power is
turned off , the time to discharge the residual
energy from the capacitors (Leds fl ashing).
Check/correct the DIPs settings.
RECOMMENDED ACTIONS
55