56
6. Maintenance & Repair (cont.)
ERROR
CODE
TYPE OF ERROR
CONSEQUENCE
of ERROR only on
Chiller 1 (Master)
CONSEQUENCE
of ERROR only
on Chiller 2 to
8 (Slaves)
RECOMMENDED ACTIONS
E16
Emergency stop error
If the unit is running,
the system will
shut down.
The system won’t
reset automatically.
It only turns off the
indicated unit.
The system won’t
reset automatically.
Check the building’s emergency system.
Only restart the system if you are sure that
there is no evidence of security risks.
If you are not using this option, check
the DI4 input on the mainboard,
because it is probably jumpered.
E-17
High condenser
temperature (CMCT)
It only turns off the indicated unit.
Check/correct:
Condenser coil middle temperature sensor
Condenser fan motor speed.
Refrigerant charge. Condenser cleanliness.
Obstruction inside the cooling
circuit (plugged fi lters, valves,).
E-18
No connection
between the
compressor
and Inverter
compressor board
It only turns off the
inverter compressor.
NA
Turns off the unit.
Note: 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 connection between the
compressor and its control board, as well
as its communication with the main board.
E-19
Error in control
connection
No unit in the system starts. If any of
the units is running it will shut down.
Check/correct:
Connection between the control and
unit. Possible failure in the control.
E-20
High current in
fi xed compressor 1.
Fixed units only.
It only turns off the inverter compressor.
The compressor won’t reset automatically.
Check/correct:
Supply voltage, phase balance.
Compressor contactor connection
Bad contact in some component.
High discharge pressure
Compressor locked out
E-21
High current in
fi xed compressor 2.
Fixed units only.
It only turns off the inverter compressor
The compressor won’t reset automatically.
Check/correct:
Supply voltage, phase balance.
Compressor contactor connection
Bad contact in some component.
High discharge pressure
Compressor locked out
E-22
Active system inlet water
temperature sensor
(RLWT) It is not an error,
it is a reminder that the
system has more than
one unit in the system,
and that the RLWT
sensor will control the
system temperature.
Disappears within 15 seconds
Disappears within 15 seconds