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Tekmar 284 Integration Manual

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Type: Integration Manual
Category: Controller
Pages: 12
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Boiler Control 284

284_B

08/14

Replaces: 09/13

BAS Integration Manual

© 2014 

 284_B - 08/14

1 of 12

A Watts Water Technologies Company

Multi-Staging

Introduction

The Boiler Control 284 can communicate with a Building Automation System (BAS) using either BACnet

®

 IP or Modbus

®

.

This manual provides information about boiler plant & system parameters that can be accessed by building automation or 
management systems that use BACnet

®

 IP or Modbus

®

 communication. The 284 can be configured to provide monitoring 

access or read / write access with optional target temperature control from the connected BAS. 

BACnet

®

 IP

Modbus

®

Table of Contents 

284 Configuration ......................................................... 2

Lock / Unlock Switch ................................................ 2
Application Mode Setting ......................................... 2
BAS Type Setting ..................................................... 2

BACnet Protocol Implementation Conformance 
Statement (PICS) ......................................................... 3
BACnet

®

 Connection ..................................................... 3

BACnet

®

 Settings in the 284 BAS Menu ....................... 4

BACnet

®

 Analog Parameters ........................................ 6

BACnet

®

 Binary Parameters ......................................... 7

Modbus

®

 Specification .................................................. 8

Modbus

®

 Settings in the 284 BAS Menu ...................... 9

Modbus

®

 Parameters .................................................. 10

Modbus

®

 Troubleshooting ........................................... 11

Error Codes ................................................................ 12


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284 Confi guration

Ensure the 284 has the correct Application Mode & BAS Type settings before connecting to the BAS. To view menu 
selections in the 284, press & hold the Home button for 3 seconds.

BAS Type Setting

Select the type of BAS connection in the BAS Menu of the 284.

284 BAS Type

BAS Operation

BACnet

®

 IP

The 284 communicates with the BAS using the BACnet

®

 Internet Protocol (IP) protocol.

Modbus

®

The 284 communicates with the BAS using the Modbus

®

 protocol.

Lock / Unlock Switch

The 284 has an ‘Advanced’ access level that allows full access to all settings. To change from 
the Installer or User access to the Advanced access level, the 

 switch to the left side of the 

display on the front of the control must first be set to the unlock position. The access level can be 
changed in the toolbox menu.

View Menu 

(default display)

Press 

& hold

Navigate 
available 

menus

Setup
Source 1
Source 2
Source 3
Source 4
Monitor
Monitor 1
Monitor 2
Monitor 3
Monitor 4
Schedule
Time
BAS
Toolbox

Enter 

selected 

menu

Change 

item 

setting

Navigate
available 

items

Press 

once

Press 

twice

Application Mode Setting

The Application Mode of the 284 determines what options are available to the BAS.

284 Application Mode

BAS Operation

RSET 

Outdoor Temperature Reset

BAS Monitor Mode (BAS Monitor Setting set to ON)

Remote monitoring & adjustment of select settings of the 284.

Refer to the BACnet

®

 & Modbus

®

 Parameter Tables in this brochure for a listing of 

available read / write parameters.

SETP

Setpoint

DDHW

Dedicated Domestic Hot Water

EMS

Energy Management System

BAS

Building Automation System

BAS Temperature Mode

Provides Setpoint Temperature and Setpoint Call commands to the 284.

Provides Primary Pump(s) and DHW Pump request commands to the 284.

Remote monitoring & adjustment of select settings of the 284.

Refer to the BACnet

®

 & Modbus

®

 Parameter Tables in this brochure for a listing of 

available read / write parameters.


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© 2014 

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A Watts Water Technologies Company

Vendor Name: 

tekmar Control Systems Ltd.

Vendor ID: 

585

Product Name: 

Boiler Control 284

Product Model Number: 

284

Application Software Version: J1220x  

Firmware Revision: TBD  

BACnet Protocol Revision: 10

Product Description:

The 284 is a control that operates up to four boilers to provide heating for multiple loads. The control uses Proportional 
Integral Derivative (PID) logic to accurately maintain target temperature and offers advanced features including 
communication capability with a Building Automation System (BAS).

Supported BIBBs (Annex K)

Name

DS-RP-B

Data Sharing-ReadProperty-B

DS-RPM-B

Data Sharing-ReadPropertyMultiple-B

DS-WP-B

Data Sharing-WriteProperty-B

DM-DDB-B

Device Management-Dynamic Device Binding-B

DM-DOB-B

Device Management-Dynamic Object Binding-B

DM-DCC-B

Device Management-Device Communication Control-B

*

DeviceCommunicationControl password is tekmar.

Data Link Layer

Supported

BACnet

®

 IP (Annex J)

Yes

Character Set

Supported

ANSI X3.4

Yes

Device Address Binding

Supported

Static Device Address Binding

No

BACnet Standardized Device Profile (Annex L)

BACnet

®

 Application Specific Controller (B-ASC)

Standard Object Types Supported

Creatable

Deletable

Analog Input

No

No

Analog Value

No

No

Binary Input

No

No

Binary Output

No

No

Binary Value

No

No

Segmentation Capability

Supported

Window Size

Able to transmit segmented messages

No

Able to receive segmented messages

No

Network Security Options

Non-secure Device

BACnet

®

 Protocol Implementation Conformance Statement (PICS)

BACnet

®

 Connection

RJ45

Boiler 

Control 284

BACnet

®

 

Network

Switch

Use a top or back knock-out to bring a CAT-5E or CAT-6 wire into 
the wiring chamber. Connect the 284 to the BACnet

®

 network switch 

using the RJ45 port on the top edge of the control board. 

Cable length must not exceed 150 ft. (45.7 m) for CAT-5E or 
300 ft. (91.4 m) for CAT-6.
If the cable was manually made, check continuity across each 
of the wires.


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Item Field

Range

Description

OFF or ON

Default: OFF

Access: ADV

BAS MONITOR

Selects whether or not BAS monitoring is available.

Note:

 

This item is only available when APP MODE is set to either RSET, SETP, 

DDHW or EMS.

BACn, MODB

Default: BACn

Access: ADV

BAS TYPE

Selects the communication protocol used with the BAS network. Modbus

®

 

communicates over RS485 and BACnet

®

 is over IP.

0 to 4, 0 to 99, 0 to 

99, 0 to 99

Default: 0, 0, 0, 0

Access: ADV

BACNET DEVICE ID

Sets the unique address within the BACnet

®

 network. The address is set using four 

number sets displayed in the source output fields. Touch the ‘Next Item’ button to 
view and adjust each number set.

Note:

 This item is only available when BAS TYPE is set to BACn.

0x1 to 0xFFFF

Default: 0xBAC0 

(47808)

Access: ADV

BACNET PORT

Sets the User Datagram Port (UDP) port on the BACnet

®

 network.

Note:

 This item is only available when BAS TYPE is set to BACn.

OFF or ON

Default: ON

Access: ADV

BACNET DHCP

Selects whether or not the Dynamic Host Configuration Protocol (DHCP) is used 
to automatically assign the IP address on the BACnet

®

 network. If ON is selected, 

the address is displayed in the source output fields.

Note:

 This item is only available when BAS TYPE is set to BACn.

0 to 255, 0 to 255, 0 

to 255, 1 to 254

Default: 

192,168,0,200

Access: ADV

BACNET IP ADDRESS

Sets the IP address on the BACnet

®

 network. The address is set using four 

number sets displayed in the source output fields. Touch the ‘Next Item’ button to 
view and adjust each number set.

Note:

 This item is only available when BAS TYPE is set to BACn and BACn DHCP 

is set to OFF.

0 to 255, 0 to 255, 0 

to 255, 1 to 254

Default: 192,168,0,1

Access: 

ADV

BACNET GATEWAY

Sets the Gateway address on the BACnet

®

 network. The address is set using four 

number sets displayed in the source output fields. Touch the ‘Next Item’ button to 
view and adjust each number set.

Note:

 

This item is only available when BAS TYPE is set to BACn and BACn DHCP 

is set to OFF.

0 to 255, 0 to 255, 0 

to 255, 0 to 255

Default: 

255,255,255,0

Access: ADV

BACNET SUBNET

Sets the subnet address on the BACnet

®

 network. The address is set using four 

number sets displayed in the source output fields. Touch the ‘Next Item’ button to 
view and adjust each number set. 

Note:

 

This item is only available when BAS TYPE is set to BACn and BACn DHCP 

is set to OFF.

OFF, 30 to 65535

Default: OFF

Access: ADV

BACNET BBMD TIME

Sets the Bacnet

®

 Broadcast Management Device (BBMD) time-to-live used 

for foreign device registration.

Note:

 This item is only available when BAS TYPE is set to BACn.

BACnet

®

 Settings in the 284 BAS Menu


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Item Field

Range

Description

0 to 255, 0 to 255, 0 

to 255, 0 to 255

Default: 

127,127,127,127

Access: Adv

BACNET BBMD IP

Sets the BBMD IP address on the BACnet

®

 network. The address is set using four 

number sets displayed in the source output fields. Touch the ‘Next Item’ button to 
view and adjust each number set.

Note:

 This item is only available when BAS TYPE is set to BACn and BBMD TIME 

is not set to OFF.

0x1 to 0xFFFF

Default: 0xBAC0 

(47808)

Access: Adv

BACNET BBMD PORT

Sets the BBMD UDP port on the BACnet

®

 network.

Note:

 This item is only available when BAS TYPE is set to BACn and BBMD TIME 

is not set to OFF.

BACnet

®

 Settings in the 284 BAS Menu


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Object 
ID

Name

Description

Data 
Type

Read / 
Write

Units

Range / Value

Analog Input Objects

0

Boil TARG

Boiler Target Temperature

AI

R

°F (64)

-22 to 266°F

1

Boil MIN

Minimum Boiler Target Temperature

AI

R

°F (64)

60 to 180°F

2

Boil MAX

Maximum Boiler Target Temperature AI

R

°F (64)

90 to 225°F

3

Boil SUP

Boiler Supply Temperature

AI

R

°F (64)

-22 to 266°F

4

Boil RET

Boiler Return Temperature

AI

R

°F (64)

-22 to 266°F

5

OUTDOOR

Outdoor Air Temperature

AI

R

°F (64)

-76 to 149°F

6

DHW

DHW Tank Temperature

AI

R

°F (64)

-22 to 266°F

7

VENT

Vent Temperature

AI

R

°F (64)

-22 to 266°F

8

Boil INLET 

Boiler Inlet Temperature

AI

R

°F (64)

-40 to 500°F

9

FLOW RATE

Flow Rate

AI

R

GPM (89)

0 to 65535 gpm

10

ENERGY

Energy Usage

AI

R

Therms (21) 0 to 65535 Therms

11

PRESSURE

System Pressure

AI

R

PSI (56)

0 to 65535 psi

12

PRIM P1 RT

Primary Pump 1 Running Time

AI

R

Hours (71)

0 to 65535 Hours

13

PRIM P2 RT

Primary Pump 2 Running Time

AI

R

Hours (71)

0 to 65535 Hours

14

DHW P RT

DHW Pump Running Time

AI

R

Hours (71)

0 to 65535 Hours

15

ERROR

Current Error

AI

R

N/A (95)

See Error List

16, 22,
28, 34

Boil (n) TYPE Boiler (n) Type

AI

R

N/A (95)

0 = MOD, 1 = 1STG,
2 = 2STG, 3 = EMS

17, 23,
29, 35

Boil (n) OUT

Boiler (n) Outlet Temperature

AI

R

°F (64)

-22 to 266°F

18, 24,
30, 36

Boil (n) MOD

Boiler (n) Modulating Output

AI

R

% (98)

0 to 100%

19, 25,
31, 37

BURNER (n)

Boiler (n) Running Time

AI

R

Hours (71)

0 to 65535 Hours

20, 26,
32, 38

CYCLES (n)

Boiler (n) Cycles

AI

R

N/A (95)

0 to 65535

21, 27,
33, 39

PUMP (n) RT

Boiler (n) Pump Running Time

AI

R

Hours (71)

0 to 65535 Hours

Analog Value Objects

0

SETPOINT

BAS Setpoint Temperature

AV

R/W

°F (64)

60 to 225°F

1

ROOM Occ

Room Occupied Temperature

AV

R/W

°F (64)

35 to 100°F

2

ROOM UnOcc Room UnOccupied Temperature

AV

R/W

°F (64)

35 to 100°F

3

OUT DSGN

Outdoor Design Temperature

AV

R/W

°F (64)

-60 to 45°F

4

TERMINAL

Terminal Unit Type

AV

R/W

N/A (95)

0 = HRF1, 1 = HRF2,
2 = CONV, 3 = COIL,
4 = RAD, 5 = BASE

5

OUTDOOR

BAS Outdoor Air Temperature

AV

R/W

°F (64)

-85 to 149°F
(-85°F = invalid temp. / no 
BAS sensor)

BACnet

®

 Analog Parameters

Analog Input Object = AI 

Analog Value Object =  AV 

Read = R 

Read / Write = R / W

(n) represents the specific Boiler number, including 1, 2, 3 and 4.


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Object ID Name

Description

Data Type Read / Write Units

Range / Value

Binary Input Objects

0

PRIM P1

Primary Pump 1 Status

BI

R

N/A

0 = Off, 1 = On

1

PRIM P2

Primary Pump 2 Status

BI

R

N/A

0 = Off, 1 = On

2

DHW PUMP

DHW Pump Status

BI

R

N/A

0 = Off, 1 = On

3

SETBACK

Setback Status

BI

R

N/A

0 = Off, 1 = On

4

AUX RLY

Auxiliary Relay Status

BI

R

N/A

0 = Off, 1 = On

5

ALERT RLY

Alert Relay Status

BI

R

N/A

0 = Off, 1 = On

6

HEAT CALL

Heat Call Status

BI

R

N/A

0 = Off, 1 = On

7

DHW CALL

DHW Call Status

BI

R

N/A

0 = Off, 1 = On

8

SETP CALL

Setpoint Call Status

BI

R

N/A

0 = Off, 1 = On

9

FLOW PROOF

Flow Proof Call Status

BI

R

N/A

0 = Off, 1 = On

10

CA PROOF

C.A. Proof Call Status

BI

R

N/A

0 = Off, 1 = On

11, 13,
15, 17

CONDENSE (n)

Boiler (n) Condensing

BI

R

N/A

0 = No, 1 = Yes

12, 14,
16, 18

B(n) PUMP

Boiler (n) Pump Status

BI

R

N/A

0 = Off, 1 = On

Binary Output Objects

0

DHW PUMP

BAS DHW Pump Request

BO

R/W

N/A

0 = Off, 1 = On

Binary Value Objects

0

BAS SETP CALL

BAS Setpoint Call

BV

R/W

N/A

0 = Off, 1 = On

1

BAS PRIM PMP REQ

BAS Primary Pump Request 

BV

R/W

N/A

0 = Off, 1 = On

2, 3,
4, 5

ENABLE B(n)

Enable / Disable Boiler (n)

BV

R/W

N/A

0 = Enable,
1 = Disable

Refer to the 284_D Installation & Operational Manual for additional information.

Troubleshooting
If there is no communication, check the following:

Check the ethernet cable. Cable length must not exceed 150 ft. (45.7 m) for CAT-5E or 300 ft. (91.4 m) for CAT-6.
If the cable was manually made, check continuity across each of the wires.

If there is intermittent communication, check the following:

Check the ethernet cable. Cable length must not exceed 150 ft. (45.7 m) for CAT-5E or 300 ft. (91.4 m) for CAT-6.


BACnet

®

 Binary Parameters

Binary Input Object = BI 

Binary Output Object = BO 

Binary Value Object = BV 

Read = R 

Write = W

(n) represents the specific Boiler number, including 1, 2, 3 and 4.


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Communication Protocol

Modbus

®

 over RS485

Physical Layer

RS485 two-wire plus signal ground

Baud Rate

2400, 9600, 19200, 57600, 115000 (default: 19200 bps)

Recommended Cable

18 AWG shielded, twisted pair (STP)

Transmission Mode

RTU or ASCII (default: RTU)

Maximum Cable Length

11500 bps: 580 ft (177 m)
57600 bps: 1,158 ft (353 m)
19200, 9600, 2400 bps: 3,280 ft (1,000 m)
3,280 ft (1,000 m) for all baud rates if 120 Ohm terminating resistors used

Start Bit

1 bit

Data Length

8 bits for RTU mode
7 bits for ASCII mode

Parity

None (2 stop bits)
Even (1 stop bit)
Odd (1 stop bit)
(default: Even)

Addressing

1 to 247
(default: 1)

Modbus

®

 Specifi cation

Modbus

®

 Connection

B A G

Master

284

40

41

42

Gnd

+

 

RS 485

B

A

(+) (-)

Use a top or back knock-out to bring a shielded twisted pair wire from the nearest 
Modbus

®

 RS485 connection point into the wiring chamber. Wire the A, B & G 

conductors from the Modbus

®

 point to the 284 A, B & Gnd terminals. 

Gnd should not be connected to the ground screws in the 284.


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A Watts Water Technologies Company

Item Field

Range

Description

OFF or ON

Default: OFF

Access: ADV

BAS MONITOR

Selects whether or not BAS monitoring is available.
This item is only available when APP MODE is set to either RSET, SETP, DDHW 
or EMS.

NONE, BACn, MODB

Default: BACn

Access: ADV

BAS TYPE

Selects the communication protocol used with the BAS network. Modbus

®

 

communicates over RS485 and BACnet

®

 is over IP.

1 to 247

Default: 1

Access: ADV

MODBUS ADDRESS

Sets the unique address within the Modbus

®

 network.

This item is only available when BAS TYPE is set to MODB.

RTU or ASCI
Default: RTU

Access: ADV

MODBUS DATA

Selects whether the Modbus

®

 data communication type is RTU or ASCII (ASCI).

This item is only available when BAS TYPE is set to MODB.

2400, 9600, 19K2, 

57K6, 115K

Default: 19K2

Access: ADV

MODBUS BAUD RATE

Selects the communication speed. In order to ensure reliable communications, the 
baud rate on the control must be same as the Modbus

®

 network.

This item is only available when BAS TYPE is set to MODB.

NONE, EVEN, ODD

Default: EVEN

Access: ADV

MODBUS PARITY

Selects the parity used for the Modbus

®

 communication.

This item is only available when BAS TYPE is set to MODB.

Modbus

®

 Settings in the 284 BAS Menu


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Register

Parameter Name

Read /Write

Units

Type

Format Range

System Status Registers

1

Boiler Target Temperature

R

°F

Input

S16

-22 to 266°F

2

Boiler Minimum

R

°F

Input

S16

60 to 180°F

3

Boiler Maximum

R

°F

Input

S16

90 to 225°F

4

Boiler Supply Temperature

R

°F

Input

S16

-22 to 266°F

5

Boiler Return Temperature

R

°F

Input

S16

-22 to 266°F

6

Outdoor Air Temperature

R

°F

Input

S16

-76 to 149°F

7

DHW Temperature

R

°F

Input

S16

-22 to 266°F

8

Vent Temperature

R

°F

Input

S16

-40 to 500°F

9

Boiler Inlet Temperature

R

°F

Input

S16

-22 to 266°F

10

Flow

R

10*GPM

Input

U16

0 to 65535 gpm

11

Energy

R

Therms

Input

U16

0 to 65535 Therms

12

System Pressure

R

10*PSI

Input

U16

0 to 65535 psi

13

Primary Pump 1 Relay Status

R

Enum

Input

U16

0=Off, 1=On

14

Primary Pump 2 Relay Status

R

Enum

Input

U16

0=Off, 1=On

15

DHW Pump Relay Status

R

Enum

Input

U16

0=Off, 1=On

16

Primary Pump 1 Runtime

R

Hours

Input

U16

0 to 65535 Hours

17

Primary Pump 2 Runtime

R

Hours

Input

U16

0 to 65535 Hours

18

DHW Pump Runtime

R

Hours

Input

U16

0 to 65535 Hours

19

Setback Status

R

Enum

Input

U16

0 = Occ, 1 = UnOcc

20

Auxiliary Relay Status

R

Enum

Input

U16

0 = Off, 1 = On

21

Alert Relay Status

R

Enum

Input

U16

0 = Off, 1 = On

22

Heat Call Status

R

Enum

Input

U16

0 = Off, 1 = On

23

DHW Call Status

R

Enum

Input

U16

0 = Off, 1 = On

24

Setpoint Call Status

R

Enum

Input

U16

0 = Off, 1 = On

25

Flow Proof Call Status

R

Enum

Input

U16

0 = Off, 1 = On

26

C.A. Proof Call Status

R

Enum

Input

U16

0 = Off, 1 = On

27

Error Code

R

Enum

Input

U16

See Error Code List

System Parameter Registers

1

Setpoint Call Request

R/W

Enum

Holding

U16

0 = Off, 1 = On

2

Setpoint Target Request

R/W

°F

Holding

U16

60 to 225°F

3

Primary Pump Request

R/W

Enum

Holding

U16

0 = Off, 1 = On

4

IDHW Pump Request

R/W

Enum

Holding

U16

0 = Off, 1 = On

5

Room Occupied

R/W

°F

Holding

S16

35 to 100°F

6

Room UnOccupied

R/W

°F

Holding

S16

35 to 100°F

7

Outdoor Design Temperature

R/W

°F

Holding

S16

-60 to 45°F

8

Terminal Unit Type

R/W

Enum

Holding

U16

0 = HRF1, 1 = HRF2,
2 = CONV, 3 = COIL,
4 = RAD, 5 = BASE

9

Outdoor Temperature

R/W

°F

Holding

S16

-85 to 149°F
(-85°F = invalid 
temp. / no BAS 
sensor)

Modbus

®

 Parameters

Read = R 

Read / Write = R / W

(n) represents the specific Boiler number, including 1, 2, 3 and 4.


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Register

Parameter Name

Read /Write

Units

Type

Format

Range

Boiler Status Registers

10,11,12,13

Boiler (n) Enable/Disable

R/W

Enum

Holding

U16

0 = Enable, 1 = Disable

28,36,44,52

Boiler (n) Type

R

Enum

Input

U16

0 = MOD, 1 = 1STG,
2 = 2STG, 3 = EMS

29,37,45,53

Boiler (n) Condensing

R

Enum

Input

U16

0 = No, 1 = Yes

30,38,46,54

Boiler (n) Outlet 
Temperature

R

°F

Input

S16

-22 to 266°F

31,39,47,55

Boiler (n) Modulation Rate

R

%

Input

U16

0 to 100%

32,40,48,56

Boiler (n) Runtime

R

Hours

Input

U16

0 to 65535 Hours

33,41,49,57

Boiler (n) Cycles

R

Num

Input

U16

0 to 65535

34,42,50,58

Boiler (n) Pump Status

R

Enum

Input

U16

0 = Off, 1 = On

35,43,51,59

Boiler (n) Pump Runtime

R

Hours

Input

U16

0 to 65535

Product Information

60

Product Model

R

Num

Input

U16

284

61

Firmware Revision

R

Num

Input

U16

SVN revision

62

Application Version

R

Num

Input

U16

J number letter 
(A=1, B=2,...)

Modbus

®

 Parameters

Modbus

®

 Troubleshooting

If there is no communication, check the following:

Check that the polarity on the Modbus

®

 A & B terminals 

is correct.
Check that Modbus

®

 GND terminal is securely 

connected.
Check that the Baud Rate on both devices are the 
same.

If the communication is intermittent, check the 
following:

Check that the communication cable is of the twisted 
pair type.
Reliable communication depends on the cable length & 
Baud rate used. Long cable length may require a lower 
Baud Rate.

Read = R 

Read / Write = R / W

(n) represents the specific Boiler number, including 1, 2, 3 and 4.


background image

Product design, software and literature are Copyright ©2014 by 
tekmar Control Systems Ltd., 

A Watts Water Technologies Company

12 of 12

All specifications are subject to change without notice. 

Printed in Canada. 284_B - 08/14.

tekmar Control Systems Ltd., 

A Watts Water Technologies Company

. Head Offi ce: 5100 Silver Star Road, 

Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarControls.com

Code

Description

0

No Error

1

EEPROM Error

2

Boiler Supply Sensor Error

3

Boiler Return Sensor Error

4

DHW Sensor Error

5

Outdoor Sensor Error

6

Vent Sensor Error

7

Boiler 1 Outlet Sensor Error

8

Boiler 2 Outlet Sensor Error

9

Boiler 3 Outlet Sensor Error

10

Boiler 4 Outlet Sensor Error

11

Boiler 1 Maximum Outlet Temperature Warning

12

Boiler 2 Maximum Outlet Temperature Warning

13

Boiler 3 Maximum Outlet Temperature Warning

14

Boiler 4 Maximum Outlet Temperature Warning

15

Boiler Inlet Sensor

Code

Description

16

Flow Proof Error

17

C.A. Proof Error

18

Vent Maximum Temperature Warning

19

No Heat Warning

20

tN4 Duplicate Master

21

tN4 Schedule Master

22

tN4 Schedule Member

23

tN4 Device Lost (Bus b)

24

tN4 Device Lost (Bus 1)

25

tN4 Device Lost (Bus 2)

26

tN4 Device Lost (Bus 3)

27

tN4 Device Error (Bus b)

28

tN4 Device Error (Bus 1)

29

tN4 Device Error (Bus 2)

30

tN4 Device Error (Bus 3)

Error Codes