Airedale EasiCool 6kW 64kW - Manual (Page 27)

27 EasiCool EZRE Operational Manual 7610207 V1.0.0_02_2013
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Precision Air Conditioning EasiCool™EZRE
Alarm 14: Low Return Temperature
This alarm indicates that the return air temperature has exceeded the return air temperature low limit. To prevent
nuisance alarms on initial fan start-up, the alarm is delayed for 2 minutes. When the return air temperature is above the
low limit the alarm is auto reset within the controller.
Alarm 15: High Return Humidity
This alarm indicates that the return air humidity has exceeded the return air humidity high limit. To prevent nuisance
alarms on initial fan start-up, the alarm is delayed for 2 minutes. When the return air humidity is below the high limit the
alarm is auto reset within the controller.
Alarm 16: Low Return Humidity
This alarm indicates that the return air humidity has exceeded the return air humidity low limit. To prevent nuisance
alarms on initial fan start-up, the alarm is delayed for 2 minutes. When the return air humidity is above the low limit the
alarm is auto reset within the controller.
Alarm 17: Hours Limit Compressor 1
This alarm indicates that the running hours of compressor 1 have exceeded the hours run threshold. This alarm is for
maintenance use only and the compressor will continue to operate. Before attempting to reset this alarm, the running
hours of compressor need to adjusted below the hours run threshold. Then this manual reset alarm can be cleared by
referring to resetting the Alarm.
Alarm 18 Hours Limit Compressor 2
This alarm indicates that the running hours of compressor 2 have exceeded the hours run threshold. This alarm is for
maintenance use only and the compressor will continue to operate. Before attempting to reset this alarm, the running
hours of compressor need to adjusted below the hours run threshold. Then this manual reset alarm can be cleared by
referring to resetting the Alarm.
Alarm 19: Hours Limit Main Fan
This alarm indicates that the running hours of the main fan have exceeded the hours run threshold. This alarm is for
maintenance use only and the main fan will continue to operate. Before attempting to reset this alarm, the running hours
of main fan need to adjusted below the hours run threshold. Then this manual reset alarm can be cleared by referring to
resetting the Alarm.
Alarm 20: Hours Limit Humidifier
This alarm indicates that the running hours of the humidifier have exceeded the hours run threshold. This alarm is for
maintenance use only and the humidifier will continue to operate. Before attempting to reset this alarm, the running
hours of humidifier need to reset. Then this manual reset alarm can be cleared by referring to resetting the Alarm.
Alarm 21: Clock Faulty
This alarm indicates that the controller’s real time clock is not operating correctly. During this alarm any time zones set-
up would be ignored. When the clock is operating normally the alarm will auto reset and the controller will resume any
time zones previously set-up.
Alarm 22: LAN Disconnected
This alarm indicates that there is a network communications fault between one or more units. If the unit is configured
as standby, the unit will automatically start-up and continue to operate until the network communications fault has been
rectified. This alarm is auto reset.
Alarm 23: High Pressure
This alarm indicates that the condenser pressure has exceeded the condenser high limit and DX cooling has switched
off. This alarm is manual reset and can be cleared by referring to resetting the Alarm.
Alarm 24: Frost Protection
This alarm indicates that the controller has disabled DX cooling to prevent frost damaging the heating coil. This alarm is
auto reset.
Alarm 25: High Conductivity Alarm
This alarm indicates that the mains water supply conductivity has exceeded the high conductivity limit and the humidifier
has been disabled. This alarm is manual reset and can be cleared by referring to resetting the Alarm.