Standard Display

The Standard Display is a ¼ VGA graphical type display. The temperature can be displayed in Celsius or Fahrenheit.

The Standard Display will display the controlling sensor and Setpoint. The Setpoint will be the low reading with the C or F.

Once a key is pressed, the Standard Display will change to the Unit Status Display. After two minutes of no key activity, the display will return to the Standard Display.

Standard Display

In this section:

  1. Viewing Alarms/Messages from Standard Display
  2. Display Alternate Fahrenheit (F) or Celsius (C) Temperatures
  3. Changing Setpoint
  4. Main Menu
Parent topic: Controller Description

Idle Screen and Check Symbol

After approximately 30 seconds of inactivity, the display will go into hibernation and one of the following symbols will be displayed. Display alternates between the idle screen and the standard display during this time.

Happy face = everything is OK
Disgruntled face = there is a message
Unhappy face = there is an alarm

The check symbol indicates that a Smart PTI has recently been running and no problems were found. The checkmark will only be shown in the normal operation state. This symbol will appear at the left hand corner of the idle screen display.

Unit Status Display

The Unit Status Display will show the following (looking from top to bottom):

  • Date and Time / Alarm Warning

  • LoPrsH Low Pressure Transducer R134a

  • RA Return air sensor

  • SA Supply air sensor

  • SP Setpoint

  • Mode Icons Compressor ON, Heater ON, Evap Fan ON

  • Capacity Bar Graph Percentage of mode (100% is full on)

  • F1 - F4 Key Functions ALARM C/F SETPOINT MENU

Display Icons

 Alarm
SmartPTI has recently been running and no problems found
Pretrip Inspection / Test in Progress
Controlling Mode Optimized
Heating
Controlling Mode Economy
Evaporator Fan High Speed
Bluetooth®
Evaporator Fan Low Speed
Cell Phone
Condenser Fan On
GPS Signal
Watercooled
RMM
Dehumidification
Battery Full (Datalogger Battery)
Defrost
Battery Charging (Datalogger Battery)
Compressor On Unloaded
Battery state not known. Temperature to low or high, charger suspended. (Datalogger Battery)
Compressor On Loaded without Vapour Injection
Battery Error (Datalogger Battery)
Compressor On Loaded with Vapour Injection
Refrigerant Type
R134a compressor
Super Freezer Unit

Mode Descriptions

Frozen/Cooling Down

Frozen/cooling down mode where the unit setpoint is set to below -10C. The function here is to maintain setpoint temperature by controlling the temperature on the return air.

The condenser fan will operate in on. The evaporator fans will operate in low speed mode.

Defrost

Defrost is a situation where the unit either on demand or timing is defrosting the evaporator coil. The unit is heating with the heating elements awaiting 18C on the evaporator sensor.

When the set Defrost termination temperature is reached, the unit will return to the operation mode depending on the setpoint.

PTI

PTI is a pretrip inspection and is used to diagnose the condition of the unit. There are a possibility to chose between several type of PTI´s depending on the test needed to secure the functionality of the unit.