Lennox V0STAT54P-2 Installation And Operation Instructions Manual

1

©2017 Lennox Industries Inc.

Dallas, Texas, USA

INSTALLATION/
OPERATION
INSTRUCTIONS

CONTROLS
507596-04
04/2017

THIS MANUAL MUST BE LEFT WITH
THE OWNER FOR FUTURE REFERENCE

WARNING

Improper installation, adjustment,
alteration, service or maintenance
can cause property damage, personal
injury or loss of life.
Installation and service must be
performed by a licensed professional
HVAC installer (or equivalent) or
service agency.

Frequent changes to operating mode
may cause system malfunction.
Allow at least one minute between
mode changes to allow the system to
stabilize.

IMPORTANT!

!

V0STAT54P-2 Indoor Unit
Non-programmable Controller

Electrostatic discharge can affect elec­tronic components. Take precautions
to neutralize electrostatic charge by
touching your hand and tools to metal
prior to handling the control.

IMPORTANT!

2

Shipping and Packing List

Package 1 of 1 contains;

1 – Wired Controller
1 – Installation and operation manual
2 – Plastic spacers

General

The V0STAT54P-2 is a wired non-program­mable local controller that controls up to 16
VRF indoor units. These instructions are
intended as a general guide and do not su­persede local codes in any way. Consult au­thorities having jurisdiction before installation.

Requirements

• Four-conductor cable is required for in­stallation.

• Be sure that power supply has been
turned off before beginning installation.

• This controller should be used only as de­scribed in this manual.

• Do not install the controller on outside
walls (where there is unconditioned space
on opposite side of wall) or in locations
where direct sunlight may be present.

Installation

Clean controller using a clean, damp
cloth. Do not spray cleanser on or
around controller.

Do not install controller in areas
where harmful gases containing
sulfur or other damaging agents
may exist or the controller may be
damaged.

CAUTION

!

CAUTION

!

Power wiring between controller and fi rst
indoor unit:

• Minimum 18 AWG stranded shielded
cable up to 164 feet (50 m).

• Ensure there are no gaps between the
controller back cover and the mounting
surface.

• Fill any holes in the wall behind the
controller to avoid false readings from
infi ltration.

• Ground the shielded control wiring.

• Do not use a megger to test insulation.

Communication wiring between indoor
units:

• Minimum 18 AWG stranded shielded
cable.

3

Do not operate controller with wet
hands.

CAUTION

!

Read all of the information in this manual
before using this controller. All wiring must
conform to local and national building and
electrical codes and ordinances. This is

a 12 VDC controller. Do not install on
voltages higher than 12 VDC.

• This manual provides the installation
instructions for this controller. Refer to the
included wiring diagrams to connect the
controller to the indoor unit.

• The controller uses low voltage. Keep a
minimum distance of 12” (305 mm) be­tween low voltage control wire and high
voltage power wires.

IMPORTANT!

Figure 1. Remove Controller from Back Cover

1. Remove the controller from the back cover using a fl at head screw driver as shown. See
fi gure 1.

4

Figure 2. Installation

4. At the controller, wire the fi eld-provided 4-conductor shielded cable to X / Y / GND / 12V
terminal of the controller. See fi gure 3.

2. Adjust the length of the two plastic spacers as needed to allow the controller to be mounted

fl ush with the wall. NOTE – Be sure to provide for future maintenance by allowing enough
slack in the wiring to allow the controller to be removed from the wall if needed. See fi gure 2.

3. Attach the back cover using fi eld-provided screws.

Figure 3. Connection at Controller

4-conductor wiring

X 12VY GND

5

Figure 4. Wire to One Indoor Unit

5. Reattach the controller to the back cover.

6. Connect the controller to one or more indoor units, up to 16. Use 4-conductor shielded cable
to connect to the fi rst indoor unit. NOTE - Wiring is polarity sensitive. See fi gure 4.

COM 12VX Y

12V X Y E

NOTE - Connect up to 16 indoor units
NOTE - Ground cable shielding at indoor unit

6

Specifi cations

Input voltage 12 VDC
Ambient temperature 23~110°F (-5~43°C)
Ambient humidity RH40%~RH90%

Table 1. Specifi cations

Figure 5. Wire Multiple Indoor Units

COM 12VX Y

12V X Y E 12V X Y E 12V X Y E

NOTE - Connect up to 16 indoor units
NOTE - Ground cable shielding at one end of each length of cable

7. Daisy chain 3-conductor control wiring to each additional indoor unit using the X Y E termi­nals in the electrical control box of the indoor unit. Do not daisy chain 12V power cable. See
fi gure 5. NOTE - Wiring is polarity sensitive.

7

Description of Buttons

Power
Button

Fan
Speed
Button

Up-Arrow

Button

Mode

Button

Cooling

Mode

Heating

Mode

Auto

Mode

Dry

Mode

Fan

Mode

Locked

Function

Centralized

Controller

Locked

Cooling

Setpoint

Heating

Setpoint

Down-Arrow

Button

Room

Temperature

Swing

Fan Speed

8

Operation

After powering on the controller, wait 30 sec­onds for initialization The indoor unit cannot
be controlled by the controller until initializa­tion is complete.

Start/Stop Operation

Press the power button.

• Controller ON: LED display lit.

• Controller OFF: LED display not lit.

Set Operation Mode

Press the Mode button to scroll through the
mode selections.

• Cool – System operates in cooling mode.

• Heat – System operates in heating mode.

• Auto -- System operates in auto mode.

• Dry -- System operates in dehumidifi ca-
tion mode. NOTE - fan speed cannot be

adjusted during dry mode.

• Fan – Fan only, no heating or cooling.

To set (or change) the room temperature
setting (setpoint)

Press the up-arrow & down-arrow buttons to
adjust the setpoint.

When in Auto mode, separate heating and
cooling setpoints can be set. Press the Mode
button to switch between heating and cooling
setpoints.

NOTE - Indoor units connected to a local con­troller may also be controlled by a centralized
controller. Indoor units respond to the last
command sent. It is recommended that in­door units be controlled from a single source
of control, either local controller or central­ized controller but not both, to avoid confl icts
in commands.

9

MODEFAN SPEED

FAN SPEED

COOL

HEAT

ROOM TEMP.

Figure 6. Function Lock Indicator

Function Lock

Indicator

Louver Swing Operation

Press both the up-arrow button and the down­arrow button simultaneously to start louver
auto swing operation. The louvers will move
automatically until stopped.

Press both the up-arrow button and the
down-arrow button simultaneously again
to stop the swing operation. The louvers
will remain in position where stopped. Do
not move louvers manually; only move
louvers using the auto swing function.

NOTE - Not available on all indoor unit types.

Lock Operation

Some operational functions can be locked.
See table 2

10

Lock Type Operation

Simultaneously press the buttons
shown below

User Experience

Lock operation
mode

The Mode button is inactive.
User cannot change operation
mode using this controller.

Lock fan speed

The fan speed button is inac­tive. User cannot change fan
speed using this controller.

Lock temperature
increase

The Up-arrow button is inactive.
User cannot raise setpoint us­ing this controller.

Lock temperature
decrease

The Down-arrow button is inac­tive. User cannot lower setpoint
using this controller.

Lock ON/OFF
status

The Power button is inactive
User cannot turn the indoor unit
on or off using this controller.

Lock all buttons

All buttons are inactive. User
cannot make any changes
to the indoor unit using this
controller.

Unlock all buttons

All buttons are active. User
can make any changes to the
indoor unit using this controller.

Table 2. Lock Operation Functions

11

Controller Settings

• Press and hold the Fan speed button and
the Mode button for 5 seconds to access
the controller settings.

• Use Table 3 to setup the controller.

• When in Settings mode:

• Press the Fan speed button to accept

the current setting parameters and pro­ceed to the next setting.

• Press the Up-arrow and Down-arrow

buttons to adjust parameters.

• Press the Power button to restart control­ler.

Centralized Controller Locks Controller

If a function of the indoor unit is locked by a
centralized controller (e.g. mode, tempera­ture setpoint, swing, etc.), the V0STAT54P-2
controller will not be able to adjust that
locked function.
The function must be unlocked at the cen­tralized controller before the local controller
can operate it.

MODEFAN SPEED

Figure 7. Controller Settings

Settings

Code

Settings Number

(see table 3)

Settings

Parameter

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Table 3. Controller Settings

Code Function Set-

tings
No.

Value Note

EE

Power off
– Memory
settings for
Auto Mode

NOTE – When
Auto mode is
being used,
setpoint, fan
speed, and
operation
mode (cooling
or heating) is
memorized
by the indoor
unit.

10 on (default)

When Auto mode is being
used, the controller will
memorize the user setting of
Auto mode before powering
off. When power is restored,
the controller mode will be set
to Auto mode.

11 off

When Auto mode is being
used, the controller will not
memorize the user setting of
Auto mode before powering
off. When power is restored,
the controller mode will be
set to the operation mode
of indoor unit (cooling or
heating).

CF

Temperature
unit

20 °C The controller will use °C
21 °F (default) The controller will use °F

Gr Not used 40 Not used Not used

Fr

Room
temperature
sensor location

50 0 Use indoor unit sensor

51 1 (default)

Use controller sensor

NOTE - Required setting if
multiple indoor units are con­nected to the controller.

13

Code Function Set-

tings
No.

Value Note

t1

Room temper­ature sensor
calibration

60

Fahrenheit:-4°F/

-3°F/ -2°F/ -1°F/ 0°F
(Default)/ 1°F/ 2°F/
3°F/ 4°F
Celsius: -2°C/ -1°C/
0°C (Default)/ 1°C/
2°C

Adjust the calibration of the
room temperature senor.
Value selected will be added
to the temperature sensor
value.

Au

Auto mode en­able/disable

70 on (default)

Auto mode enable (heat
recovery systems only)

71 off

Auto mode disable (heat
pump systems)

Th

Setpoint upper
limitation for
heating mode

80

Fahrenheit:
86°F~62°F (86°F
default)
Celsius: 30°C~17°C
(30°C default)

When the system is in heat­ing mode, users can not set
the temperature higher than
the set value.

Tl

Setpoint lower
limitation for
cooling mode

90

Fahrenheit:
62°F~86°F (62°F
default)
Celsius: 17°C~30°C
(17°C default)

In cooling mode, users can­not set the temperature lower
than the set value.

FC

Set indoor unit
fan ON/OFF
when cooling
requirement is
satisfi ed.

A0 on (default)

Keeps the indoor fan on when
cooling setpoint is satisfi ed.

A1 off

Turns the indoor fan off when
cooling setpoint is satisfi ed.

14

Code Function Set-

tings
No.

Value Note

FH

Set indoor unit
fan ON/OFF
when heating
requirement is
satisfi ed.

b0 on (default)

Keeps the indoor fan on when
heating setpoint is satisfi ed.

b1 --

Turns the indoor fan off when
heating setpoint is satisfi ed.

NOTE - FH code only. Simultaneously press the Fan Speed, Down-Arrow, Up-Arrow and
Mode buttons to toggle between “on” and “--”.

dr

HHE Relay
Kit - Enable
or Disable
Alternative
Heat (note:
see setting L0,
code d5 for
Alternate Heat
settings)

C0 on

Enable Alternative Heat using
the HHE Relay Kit.

C1 off (default)

Disable Alternative Heat us­ing the HHE Relay Kit.

d1

HHE Relay Kit

- Auxiliary Heat
Settings

d3 3°F/2°C (default)

When using the HHE relay kit,
auxiliary heat will be activated
when room temperature is
3°F/2°C lower than setpoint in
heating mode.

d5 5°F/3°C

When using the HHE relay kit,
auxiliary heat will be activated
when room temperature is
5°F/3°C lower than setpoint in
heating mode.

15

Code Function Set-

tings
No.

Value Note

d5

HHE Relay Kit ­Alternative Heat
Settings (note:
see setting CX,
code dr for to set
Alternative heat to
Enable/Disable).
When alternative
heat is enabled
and outdoor am­bient temperature
is lower than
the setting, The
alternate heat
source is the only
heat source for
heating, the VRF
system will stop
supplying heat
until ambient
temperature is
higher than the
setting.

L0

0 7°F/-14°C
1 (default) 10°F/-12°C
2 15°F/-9°C
3 20°F/-7°C
4 25°F/-4°C
5 30°F/-1°C
6 35°F/-2°C
7 40°F/4°C
8 45°F/7°C
9 50°F/10°C
10 55°F/13°C
11 60°F/16°C
12 65°F/18°C
13 70°F/21°C
14 72°F/22°C

16

Indoor Unit Status Query

• Press and hold the Mode button for 5 sec­onds to access the indoor unit status query.

• Use the up-arrow and down-arrow buttons
to scroll through the indoor unit statuses

• Indoor unit operation status (Figure 8)

• Indoor unit evaporator coil temperature
(T2 and T2b) (Figure 9)

• Room temperature sensor location (wired
controller or indoor unit) (Figure 10)

• On/Off status of dry contact one (Fan)
(Figure 11)

• On/Off status of dry contact two (CTON)
(Figure 12)

• On/Off status of dry contact three (HTON)
(Figure 13)

• On/Off status of dry contact four (AUXH)
(Figure 14)

FAN SPEED

COOL

SWING

Figure 8. Indoor Unit Operation Status

Setpoint

Operation Mode

Fan Speed

Indoor Unit Address

Figure 9. Indoor Unit Coil Temperature

T2b

T2

Indoor Unit Address

Louver
Auto­Swing

17

Figure 10. Room Temp Sensor Location

Room Temp Sensor Location
0 = Indoor Unit
1 = Controller

Indoor Unit Address

Figure 11. On/Off Status of HHE Relay - Fan

Figure 12. On/Off Status of HHE Relay - CTON

Figure 13. On/Off Status of HHE Relay - HTON

Not used

HHE Relay Four-Dry Contact - Fan

Dry Contact Status
on = Dry contact closed

-- = Dry contact open

HHE Relay Four-Dry Contact - CTON

Dry Contact Status
on = Dry contact closed

-- = Dry contact open

HHE Relay Four-Dry Contact - HTON

Dry Contact Status
on = Dry contact closed

-- = Dry contact open

18

Figure 14. On/Off Status of HHE Relay Kit - AUXH

Figure 15. Switch to Next Indoor Unit

MODEFAN SPEED

FAN SPEED

COOL

Connected to Multiple Indoor Units

Press the Fan speed button to switch to ad­ditional indoor units. The controller will display
operation mode, fan speed, temperature set­ting, swing status and address of indoor unit.

HHE Relay Kit Four-Dry Contact - AUXH

Dry Contact Status
on = Dry contact closed

-- = Dry contact open

19

Fault Code Query

Figure 16. Enter Fault Code Query

MODEFAN SPEED

Figure 17. View Past 10 Fault Codes

MODEFAN SPEED

Figure 18. Switch Between Fault Codes

MODEFAN SPEED

• Press and hold the Mode button for 5
seconds to access the indoor unit status
query.

• Press the Mode button to access the fault
code query. The last 10 fault codes are
stored.

• Press the Fan Speed button to scroll
through the fault codes.

• When multiple fault codes have occurred
at the same time, use the up-arrow and
down-arrow buttons to see each code.

20

Error Codes

• The V0STAT54P-2 controller displays the
last 10 error codes. To view error codes,
see the instructions on the previous page.

• If the error code is for an indoor unit, the
unit address also displays.

Figure 19. Error Code Display

MODEFAN SPEED

Error Code

Indoor Unit Address

Table 4. Indoor Unit Error Codes

Error
Code

Description

F0

Communication error between
the indoor unit and the wired
controller (may affect other
indoor units in the system)

F1

Communication error between
the indoor unit and the controller

F2 Controller EEPROM error

E1

Communication error between
the indoor unit and the outdoor

unit
E2 T1 temperature sensor error
E3 T2A temperature sensor error
E4 T2B temperature sensor error
E5 Outdoor unit error
E6 Fan motor error
E7 Indoor unit EEPROM error
E8 Indoor unit DC motor error

EE Condensate pump error