Skope ActiveCore SKT series, Service Manual

Page: 10 / 82

10
Electronic Controller
Service Manual
SKOPE TME ActiveCore
Messages and Alarms
Controller
Display
The following table explains messages and alarms that the electronic
controller displays.
Alarms signal unexpected operational changes in the chiller and can be
muted by pressing the alarm set (mute) button on the electronic controller
faceplate (see page 7).
Refer to “Controller Alarms” on page 79 for alarm diagnostics and actions.
Messages
Alarms
Display Description
The chiller is in ‘Normal’ mode and the electronic controller displays
the chiller temperature.
Message: The chiller is in ‘Energy Saving’ mode. When in Energy
Saving mode the temperature inside the chiller is moderated and the
cabinet lights turn off. The lights can be switched on and off by
pressing the light button on the controller faceplate, and the chiller
can be switched into ‘normal’ mode by pressing the Energy Saving
button on the electronic controller faceplate.
Alarm: The front door has remained open for over two minutes. An
alarm sounds, and the compressor and evaporator fan turn off.
The chiller is in Cold Climate Protection mode. The chiller enters cold
climate protection mode if the room ambient temperature gets too
cold. The lights remain on and cannot be switched off.
Refrigeration system error. An alarm sounds. The controller turns the
chiller off to avoid damage. Investigate fault with refrigeration
system.
Control probe fault. An alarm sounds.
Evaporator probe fault. An alarm sounds.
Door switch fault. An alarm sounds.
Low temperature alarm. An alarm sounds. The temperature inside
the chiller is too cold and an alarm sounds. The controller will
automatically reset the alarm once the temperature inside the chiller
raises.
High temperature alarm. An alarm sounds. The temperature inside
the chiller is too warm and an alarm sounds. The controller will
automatically reset the alarm once the temperature inside the chiller
drops.
Low voltage alarm. An alarm sounds. The mains voltage is low. An
alarm sounds and the controller switches off the compressor. The
controller will automatically reset the alarm once the mains voltage
raises.
High voltage alarm. An alarm sounds. The mains voltage is high. An
alarm sounds and the controller switches off the compressor. The
controller will automatically reset the alarm once the mains voltage
drops.
Electronic controller fault.