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MP-3000a Controller
67
•
Delay Defrost for 24 hours during unit
diagnosis or testing: Press “7” key and F1 key
at the same time. Press F3 key to scroll cursor
down to DELAY DEF menu line. Then press
F4 key, F2 key, “A” key, F4 key and EXIT
key. Cursor moves to end of line and flashes.
Press F3 key to toggle OFF to ON. Then press
and hold F4 key until cursor stops flashing.
•
Perform a “timed” defrost of evaporator coil:
Activate HEAT ON in the Manual Function
Test submenu. Then press “5” key six times.
Heaters will be activated for 70 min-utes. Unit
automatically returns to normal operation.
Setpoint Menu
Pressing the SETPOINT key displays a list of
tasks and values that can be activated or set:
•
Setpoint Temperature
•
Economy Mode
•
Airflow*
•
Custom Airflow*
•
Bulb Mode*
•
Humidity Control
•
Humidity Setpoint
•
AFAM Control*
•
AFAM Delay*
•
AFAM Rate*
•
CO
2
Maximum*
* Denotes MP-3000a feature only. The screens
that display on the controller are determined by
the controller model and the unit configuration
setting. All screens are NOT present on all units.
Changing the Setpoint Temperature
See “Changing the Setpoint” in this chapter.
Changing the Economy Mode
Setting
NOTE: Enter Setpoint temperature before
turning ON the Economy mode. The controller
automatically turns the Economy mode OFF
when the setpoint is changed.
1. Press the SETPOINT key. The SETPOINT
menu appears with the cursor in the “TEMP
SETP” line.
2. Press F2 key to scroll to “ECONOMY
MODE” line.
3. To change the mode setting, press F4 key.
Cursor moves to end of menu line and flashes.
4. Press F2 key to toggle between OFF and ON.
5. With the desired state in the menu line, press
and hold F4 key until cursor stops flashing.
New mode setting appears in display.
NOTE: On frozen loads, the Economy Mode
also modifies the temperature control
algorithm to extend the Null mode. See
“Economy Min.” and “Economy Max.”
under Configuration Menu in this chapter to
check the current settings or enter new
settings.
6. Press ESC key to exit the SETPOINT screen.
Summary of Contents for CRR-40 119
Page 4: ......
Page 16: ...Safety Precautions 16...
Page 18: ...Service Guide 18...
Page 20: ...Model Features 20...
Page 32: ...Specifications 32...
Page 120: ...MP 3000a Controller 120...
Page 160: ...Wiring and Schematic Diagrams Index 160...
Page 161: ...161 MPC2000 Wiring Schematic...
Page 162: ...162 MPC2000 High Voltage Wiring Diagram...
Page 163: ...163 MPC2000 Low Voltage Wiring Diagram...
Page 164: ...164 MPC2000 WCC Wiring Schematic...