Bard MV4000 General Programming Overview, Controller Programmable Features and Default Settings

General Programming Overview

MV4000 Controller Buttons and Function

On/Off Button

1.Press and release the On/Off button to turn On controller, 4-character display will illuminate and Lead unit LED will light.

2.Press and release the On/Off button to turn Off controller. Controller will go dark and A/C units will stop.

Comfort Button

1.Press and release the Comfort button to change the Cooling Set Point to 72F and the Heating Set Point to 68F for a period of 1 hour.

2.Set Points will return to the programmed settings automatically after 1 hour.

3.Pressing the Comfort button during the 1 hour period will deactivate the Set Point change.

4.The temperature display will flash the current temperature while in override mode.

Program Button

1.Press the Program button and release it when the message “Prog” appears on the display.

2.Refer to Programming Instructions and follow these commands to change from Default settings.

Advance/Change/Save Button

1.Press and release the Advance button to swap lead and lag unit positions.

2.When in Program mode the Down and Up buttons are used to scroll through the programming steps.

3.A flashing display means that the particular function of that programming step is “set”, and the display will alternate between the step function and the setting.

4.To change the setting press the Change button and the display will stop flashing, allowing change to the setting.

5.Use Down or Up arrows to change setting as desired, and press the Save button and proceed as desired.

6.When done with programming changes press the Program button until display stops flashing and room temperature is shown.

Up and Down Buttons

These buttons are used to change the settings in conjunction with the Advance/Change/Save button when in programming mode.

Controller Programmable Features and Default Settings

Order /	Description	Range / Choice	Default
Display
LSEn	Temperature at local (main) sensor	—	—
SP	Cooling set point temperature	65 to 90F (18 to 32C)	77F (25C)
db	Deadband between cooling SP and heating set point	2 to 40F (1 to 24C)	27F (15C)
r1	Temperature at remote sensor 1 location, if connected	—	—
r2	Temperature at remote sensor 2 location, if connected	—	—
cFAn	Continuous blower operation	None, Lead, Both	Lead
deg	Controller system operates in F or C	F or C	F
Alt	Alternating Lead-Lag-Lead-Lag sequence or Non-Alternating Lead-Lead-Lag-Lag sequence —	Yes or No	Yes
	Yes = Alternating
LLCO	Lead-Lag changeover time (Days)	1 - 30 days, or 0 for	7
		disabled
HP	Heat pump logic enabled — only for 1-stage heat pumps and forces Lead-Lag sequence	Yes or No	No
	(overrides a Non-Alt setting)
Cbd5	Unit 1 and 2 blowers automatically both run if delta T >5F between any 2 connected sensors	Yes or No	Yes
OFde	3-minute lead unit & 4-minute lag unit off-delay enabled	Yes or No	No
crun	Minimum 3-minute compressor runtime enabled	Yes or No	No
LoAL	Low temperature alarm setpoint	28 to 65F (-2 to 18C)	45F (7.2C)
HAL1	High temperature alarm level #1 setpoint	70F to 120F (21 to 49C)	90F (32C)
HAL2	High temperature alarm level #2 setpoint	70F to 120F (21 to 49C)	95F (35C)
Locd	Controller is locked and no changes can be made. Consult building authority.	If locked, display will show	Unlocked
		Locd if changes attempted

Inter-Stage Differential

ISd2	From Stage 1 to Stage 2
ISd3	From Stage 2 to Stage 3
ISd4	From Stage 3 to Stage 4

2, 3, 4, 5 or 6F	4
2 or 3F	2
2 or 3F	2

On/Off Differential (Hysterisis)

CSon	Turn "On" above SP for Stage 1 Cooling	+1 or 2F	2
CSoF	Turn "Off" below SP for Stage 1 Cooling	-1, 2, 3 or 4F	-4
	Stage 2, 3 and 4 Cooling automatically set same as Stage 1 decisions
HSoo	All Heating Stages are equal -/+ on & off differential	-1/+1 or -2/+2	-2/+2
CoPr	1 or 2-stage compressor, if set to 1 the 2nd stage Cooling Alarm activates on Cooling Call 2,	1 or 2	1
	if set to 2 the 2nd stage Cooling Alarm activates on Cooling Call 3

Manual	2100-571A
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