V21 Parts & Service Manual
All V21 Identified Equipment
REV A – 10/2013
P/N: 1230255
5. Press Button 4 to save changes.
6. Press Button 1 to exist and return “Refrigeration” on display.
To display the temperature:
1. Press Button 4 when the display reads “Refrigeration.”
2. Press Button 2 or 3 until the display reads “Sensor Reading.”
3. Press Button 4 and the current temperature will be shown in Fahrenheit or in Celsius.
4. Press Button 1 to exit and return the display to “Refrigeration.”
To change the degree scale:
1. Press Button 4 when the display reads “Refrigeration.”
2. Press Button 2 or 3 until the display reads “Degree Setting.”
3. The display will show the current degree scale (Celsius or Fahrenheit).
4. Press Button 4 and the degree scale will begin to flash.
5. Press Button 2 or 3 to choose setting.
6. Press Button 4 to save setting.
7. Press Button 1 to exit and return the display to “Refrigeration.”
To change the Fan Energy Savings mode:
1. Press Button 4 when the display reads “Refrigeration.”
2. Press Button 2 or 3 until the display reads “Fan.”
3. The display will read “Fan X” with the current setting displayed.
4. To change the setting press Button 4 and the current Fan mode will begin to flash.
5. Press Button 2 or 3 to increase or decrease the Fan mode.
6. Press Button 4 to save changes.
7. Press Button 1 to exit and return the display to “Refrigeration.”
The refrigeration system shall have three types of fan mode operation (energy conservation
modes) – This requires fan relay needs to be installed.
Fan Mode 0 (Disable)
The refrigeration system shall have a fan mode of operation in which the evaporator fan will be
turned on/off based on the activation of compressor. When the fan mode 0 is activated through
the Service Modes, the controller shall always turn on evaporator fan.
Fan Mode 1
The refrigeration system shall have a fan mode of operation in which the evaporator fan will be
turned on/off based on the activation of compressor. When the fan mode 1 is activated through
the Service Modes, the controller shall turn off evaporator fan after the delay for 5 minutes after
the compressor is turned off. And when the compressor is turned on, the controller shall turn on
evaporator fan at same time.
The fan mode 1 does not function for 24 hours from the pull-down mode start.
V21 12.4 Programming HV3 / CHAMELEON | P1-10
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