APC ACECFR20200SE4 Installation Manual download pdf (Page 50)

EcoBreeze System Operation and Maintenance44

Troubleshooting

NOTE: The EcoBreeze operates using controllers to control internal functions along with variable

frequency drives (VFDs). If either detects a problem, it will go into an alarm mode. Refer to the

remote display panel active alarms and status screens for additional help.

Problem Possible Cause Corrective Action

Module # will not

run

• No power

• Module address not configured

• Check that the disconnect switch on the Module

control panel has not been shut off.

• Check Module address configuration.

Basin has

excessive

sediment

• Conductivity setting requires

adjustment

• Basin drain is blocked by dirt

or debris

• Consult the water treatment specialist for

alternate conductivity settings.

• Check the basin drain for blockage.

Check for open areas of the basin. Replace basin

covers.

Scale buildup on

heat exchangers.

• Conductivity setting requires

adjustment.

• Consult the water treatment specialist for

alternate conductivity settings.

Water spray

system pump will

not run

• Pump is not receiving power

• Water level is too low

• Pump motor protection device

is tripped

• Pump is shut off and the basin

is empty. (The ambient

temperature is below 4.4°C

(40°F).)

• Check the power supply, then the pump

contactor.

• Check that the fill, fill vent, and basin drain valves

are working properly.

• Reset the pump motor.

• No action required. System is working properly.

Water spray

system pump runs

but spray does not

cover the heat

exchanger

• Strainer clogged.

• Spray nozzle obstruction

• Clean the strainer.

• Clean the spray nozzle.

VFD protection

trips

• VFD fault • Check the fault code on the VFD. Refer to the

VFD manual for more information.

Airflow too low • Supply airflow restriction

• Air filters are clogged

• Check the return and supply air damper

positions.

• Replace air filters.

Evaporator coil

ices

• Dirty or blocked evaporator coil

• Air filters are clogged

• Low IT air flow rate and low

refrigerant charge

• Clean the evaporator coil.

• Replace the air filters.

• Check operation of the IT fans

• Check the refrigerant charge

Compressor fails

to start

• VFD fault

• No power to the compressor

• Minimum Off delay timer active

• Another Critical Alarm is active

• Check the fault code on the VFD.

• Check the power supply to the compressor.

• Wait for the minimum Off time to expire.

• Check for other critical alarms.

Head pressure too

high

• Air cooled condenser

malfunction

• Erroneous sensor reading

• Check and clean the condenser coil. Check the

OA fan operation and settings.

• Check the pressure and temperature sensors.

Head pressure too

low

• Low refrigerant charge

• Erroneous sensor reading

• Check for proper subcooling. Repair any leak

and recharge the system.

• Check the OA fan operation during low ambient

temperature.

• Check the pressure and temperature sensors.

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APC ACECFR20200SE4 Installation Manual Page 50

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