Carrier AQUASMART 30EX Series Installation Operation & Maintenance page 58

6. Maintenance & Repair (cont.)
ERROR
TYPE OF ERROR
CODE
Suction saturated
temperature error
E-33
(SST); it is outside
the allowable limits.
Missing / low water
E-34
fl ow error (WFC).
Inlet water
temperature error
(REWT) outside the
allowable limits.
E-35
Note: For start-
up, temperatures
should be between
6 and 35°C.
Water temperature
delta outside
E-36
the maximum
limit allowed
Water sensor
E-37
reversion error
High current on the
Inverter compressor
E-38
board, valid for
220V units only
58
CONSEQUENCE
of ERROR only on
Chiller 1 (Master)
Turns off the compressors. If the
unit is turned off , it does not
allow compressor input.
The unit won't reset automatically; if the
error repeats 3x in less than three hours.
Turns off the unit.
The unit does not restart automatically if
the error repeats 3x in less than two hours.
Turns off the system.
The system does not restart
automatically if the error repeats
3x in less than three hours.
Turns off the unit.
The unit does not reset automatically if the
error repeats 3x in less than two hours.
Turns off the system.
The system won't reset automatically.
It only turns off the
inverter compressor ,
resetting automatically
after 2 min.
CONSEQUENCE
of ERROR only
on Chiller 2 to
8 (Slaves)
Check/correct:
Saturated suction temperature sensor.
Lack of refrigerant.
Obstruction inside the cooling
circuit (plugged fi lters, valves, etc).
Low water fl ow in the evaporator.
Check/correct:
Valve opening and closing time
set on control vs component.
Type of application for the
pump set on control.
If the system is set to System,
the on/off valve is installed.
Water fl ow sensor. Water Pump
Position of the sensor inserted
into the pipe. Must be at least
12mm in water fl ow.
Water fl ow below the minimum allowed.
Clogged Y fi lter.
Check/correct:
Inlet water temperature sensor.
Lack of refrigerant.
Obstruction inside the cooling
circuit (plugged fi lters, valves, etc.)
Low water fl ow in the evaporator
Check/correct:
Outlet and inlet water
temperature sensor.
Dirt in Y fi lter.
Low water fl ow in the evaporator.
Check the connection of the water
inlet and outlet sensors because
the sensors may be reversed
or improperly connected.
Check/correct:
Compressor supply voltage.
Phase balance.
Connection between board
and compressor. Bad contact
NA
in some component.
High discharge pressure
Compressor locked out Failure
in the condenser fan system.
Excessive refrigerant charge.
Replace the board as required.
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