Honeywell S7800A2142 4-Line LCD User Manual

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7800 SERIES

32-00110-07

S7800A2142 4-Line LCD Keyboard Display Module

PRODUCT DATA

The S7800A2142 is required to program the Valve Proving feature of selected 7800 Series devices.

The S7800A2142 KDM offers the following technical advancements to the 7800 SERIES devices:

• Compatible with installed Honeywell 7800 SERIES systems.

• When used with the new 7800 SERIES with Valve Proving Feature, the KDM allows for programming the Valve Proving Control feature and timing (Pass

APPLICATION

The S7800A2142 Keyboard Display Module (KDM) provides current system status along with ﬁrst-out annunciation and system diagnosis using a ﬁve-row by 64 column readout (Main screen shows 4 rows of text for better long-distance legibility, all other screens show 5 rows of text). The KDM provides local or remote annunciation of operation and fault information, remote reset, report generation, burner control data and diagnostic information. The KDM is part of the 7800 SERIES of microprocessorbased burner controls for gas, oil, coal or combination fuel single burner applications.

The 7800 SERIES is programmed to provide a level of safety, functional capabilities and features beyond the capacity of conventional controls.

Contents

FEATURES 2 SPECIFICATIONS 2 INSTALLATION 3 WIRING 5 TROUBLESHOOTING 10 APPENDIX A: DISPLAY SETUP 28

Code protected feature).

• When used with the new 7800 SERIES with Postpurge feature, the KDM allows for programming the Postpurge time (Pass Code protected feature).

• Allows for naming the S7830 Expanded Annunciator terminals to match your system drawings. (Displayed message only.) (Pass Code protected feature.)

• An eight line (available by scrolling) by twenty column readout set of “Call Service” (Business Card) alpha/numeric directions can be displayed instead of the standard lockout display message. (Pass Code protected feature).

• Enable ModBus communication feature.

• Conﬁgure language for English, Spanish, or French.

• On-line troubleshooting guide.

APPENDIX B: BURNER CONTROL COMMISSIONING 43 APPENDIX C: DIAGNOSTICS 48 APPENDIX D: ANNUNCIATOR TERMINAL MESSAGES 50 APPENDIX E: MODBUS FUNCTION 51

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The Business Card (Call Service) and Expanded Annunciator can be made up using:

• Capital letters (A through Z in conﬁgured language).

• Lower case letters (a through z in conﬁgured language).

• Numbers (0 through 9).

• Symbols (!, @, #, $,%, etc.).

Programming can be done with the S7800 KDM mounted on a 7800 SERIES Relay Module or with a 13 Vdc power source connected to the KDM through the 203541 5-wire connector.

Since your Business Card (Call Service) S7800A2142 will be left at the job site, programming your personal three-number password and personal lockout message can be set up ahead of time without being connected to a 7800 SERIES device.

FEATURES

• Application ﬂexibility.

• Communication interface capability.

– Through Q7700 Network Interface Unit – Through 203541 Connector on the

ModBus data high- way.

• Dependable, long-term operation provided by microcomputer technology.

• First-out annunciation and system diagnostics provided by a 5-line by 64-character display.

• First-out expanded annunciation with 24 limit and interlock Light Emitting Diodes (LEDs).

• Local or remote annunciation of operation and fault information.

• UL NEMA Class 4 rating when p/n 204729A,C NEMA 4 cover is used.

• Remote reset.

• Report generation.

• On-line troubleshooting guide.

• Burner controller data:

– Sequence status. – Sequence time. – Hold status. – Lockout/alarm status. – Flame signal strength. – Expanded annunciator status. – Total cycles of operation. – Total hours of operation. – Fault history of six most recent faults:

• Cycles of operation at time of fault.

• Expanded annunciator data at time of fault.

• Fault message and code.

• Hours of operation at time of fault.

• Sequence status at time of fault.

• Sequence time at time of fault

– Diagnostic information:

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• Device type.

• Flame ampliﬁer type.

• Flame failure response time (FFRT).

• Manufacturing code.

• On-Off status of all digital inputs and

• Prepurge time

• Postpurge time

• Valve Proving mode

• Valve Proving time

• Software revision and version of 7800

• Relay Module and KDM.

• Status of conﬁguration jumpers.

• Status of Run/Test Switch.

• Reset count

• Reset reason

SPECIFICATIONS

Electrical Ratings:

Voltage and Frequency: 13 Vdc peak full

wave rectiﬁed (+20%/- 15%).

Power Dissipation: 7W maximum. VA

consumption: 2 VA maximum.

Terminal Ratings:

Power: 13 Vdc peak full wave rectiﬁed.

Earth Ground.

Environmental Ratings:

Ambient Temperature Ranges: Operating: 0 °F (-18 °C) to +140 °F (+60 °C). Storage: -22 °F (-30 °C) to +158 °F (+70 °C). Humidity: 85% relative humidity

continuous, noncondensing.

NOTE: UL NEMA Class 4 rating when P/N

Vibration: 0.5G environment.

Mechanical:

Dimensions: See Fig. 1. Weight: 4 oz. (124 grams), unpacked.

Display:

5 rows by 64 columns with title and

navigation bar.

Languages:

S7800A2142 English/Spanish/French

Language display.

Approvals:

Underwriters Laboratories Inc. Listed: File

No. MP268, guide No. MCCZ.

Factory Mutual Approved: Report No.

J.I.1V9A0.AF. IRI: Acceptable.

Federal Communications Commission: Part

15, Class B emissions.

outputs.

SERIES.

204729A,C NEMA 4 Cover is used.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

4.85

(123.3)

2.75

(69.8)

.17

(4.3)

2.63

(66.8)

.18

(4.6)

.91

(23.1)

.99

(25.1)

.22

(5.7)

.59 (15)

.32

(8.1)

3.76

(95.4)

.21

(5.4)

.78

(19.8)

.11

(2.9)

.34

(8.8)

.52

(13.2)

1.14 (29)

4.19

(106.4)

1.97 (50)

.10

(2.5)

.10

(2.4)

1.84

(46.7)

EN60730: For compliance with remote

KDM mounting require- ments, provide electrical insulation separation by insulation using double or reinforced insulation. Do this by: Optically isolating the communication or remote reset lines from the control cabinet, or provide physical separation from the communication or remote display cover assembly (part number 204729A) or other suitable enclosure that meets the IP40 class of protection.

Accessories:

203541 ControlBus™ 5-wire Electrical

Connector. S7810A1009 Data ControlBus™ Module. 203765 Remote Display Mounting Bracket. 221818A 60 in. (1.5 m) Extension Cable

Assembly. 221818C 120 in. (3 m) Extension Cable

Assembly. 204729A NEMA 4 Cover Assembly for

S7800A KDM. 204729C NEMA 4 Cover Assembly for

S7800A KDM with reset button. 205321B Remote Display Flush Mount Kit.

Disconnect the power supply before beginning installation to prevent electrical shock and equipment damage. More than one power supply disconnect can be involved.

When Installing This Product…

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and marked on the product to make sure the product is suitable for your application.

3. Installer must be a trained, experienced, ﬂame safeguard service technician.

4. After installation is complete, check out the product operation as provided in these instructions.

5. Be sure wiring complies with all applicable codes, ordinances and regulations.

6. See Fig. 3 for S7800A unique wiring connections.

IMPORTANT

1. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, can cause interference to radio communications. It has been tested and found to comply with the limits for a Class B computing device of Part 15 of FCC rules which are designed to provided reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area can cause interference, in which case, users, at their own expense, can be required to take whatever measures are required to correct this interference.

2. This digital apparatus does not exceed the Class B limits for radio noise for digital

Fig. 1. Approximate dimensions of S7800A2142

in. (mm).

INSTALLATION

WARNING

Electrical Shock Hazard. Can cause severe injury, death

apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Humidity

Install the S7800A where the relative humidity never reaches the saturation point. The S7800 is designed to operate in a maximum 85% RH continuous, noncondensing, moisture environment.

Vibration

Do not install the S7800A where it can be subjected to vibration in excess of 0.5G continuous maximum vibration.

or property damage.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Temperature

Temperatures below 32 °F (0 °C) may cause a slow screen refresh rate and ghosting. This effect will be most evident during cold start-up (display has not been operating and is in a < 32 °F (0 °C) environment). This is due to the time required for the display to warm up. The display has a heater feature which can be set to automatic/ON/OFF (refer to page 42 Heater Mode)

If the display does not fully recover within 5 minutes, then check the systems line input voltage to insure it is within speciﬁcations.

For certain RM/ EC7800xx models the display heater (used to improve display legibility in colder temperatures) will not be available and will not function regardless of what the setting is in the display module Heater Mode.

Refer to page 43 Models that do not use the Heater Function for a list of relay models that do not use the heater function.

Weather

The S7800A is not designed to be weather tight. If installed outdoors, the S7800A must be protected by an approved

weather-tight enclosure such as the 204729A or 204729C NEMA 4 Enclosure listed in Accessories.

S7800A2142 Embedded Features

See Appendix A to set up the following features:

• Call Service (Business Card) information displayed when burner system is in Lockout of the 7800 SERIES device.

• Customizing of Expanded Annunciator (S7830) message to match a given installed limit string. If ModBus Feature is required, use S7810M1003 ModBus Module.

• ModBus communication setup and enable feature: Note that this will occupy terminals 1, 2, 3 of the 203541 Connector on the KDM, which disables the Expanded Annunciator Features.

SERVICE NOTE:

The S7800A2142 can either do the Expanded Annunciator Feature or ModBus -- not both. If BOTH are required, order the S7810M1003 ModBus Module for the ModBus option.

B. The S7800A2142 KDM is also used to program the Valve Prov- ing and Postpurge feature of Select RM7800 SERIES devices. See Appendix B.

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Mounting KDM on 7800 SERIES Relay Module.

1. Align the two interlocking ears of the KDM with the two mating slots on the 7800 SERIES Relay Module. See Fig. 2.

Fig. 2. Keyboard Display Module mounting.

2. Insert the two interlocking ears into the two mating slots and, with a hinge action, push on the lower corners of the KDM to secure it to the 7800 SERIES Relay Module.

3. Make sure the KDM is ﬁrmly in place.

Remote Mounting KDM

The KDM can be mounted either on the face of a panel door or on other remote locations. When mounting the KDM on the face of a door panel, closely follow these instructions:

1. Select the location on the door panel for ﬂush mounting.

2. Pay attention to the insertion dimensions of the two KDM screws, two interlocking ears, and the two plugin connections to allow for sufﬁcient clearance.

3. Use the KDM or Data ControlBus Module™ as a template (Fig. 28) and mark the two screw locations, interlocking ear locations and the two plug-in connector locations.

4. Drill the pilot holes for the mounting screws.

5. Cut holes in the door panel for the interlocking ears and the two plug-in connectors.

6. Mount the KDM, securing it with the two screws provided in the KDM bag assembly.

Remote Display Mounting Bracket

Use the 203765 Remote Display Mounting Bracket when mounting the KDM on a wall or remote location:

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

1. Use the 203765 Remote Display Mounting Bracket as a template to mark the four screw locations.

2. Drill the pilot holes for the four mounting screws.

3. Mount the 203765 Remote Display Mounting Bracket by securing the four no. 6 screws (M3.5 x 0.6).

4. Mount the KDM by aligning the two interlocking ears with the two mating slots on the remote mounting bracket.

5. Insert the two interlocking ears into the two mating slots.

6. Push on the lower corners of the KDM to secure it to the remote mounting bracket.

7. Make sure the KDM is ﬁrmly in place.

WIRING

WARNING

Electrical Shock Hazard. Can cause severe injury or

death.

To prevent electrical shock and equipment damage, disconnect the power supply from the main disconnect before beginning installation. More than one disconnect can be involved.

1. Refer to Fig. 3 for proper wiring.

2. Make sure all wiring complies with all

applicable electrical codes, ordinances and regulations.

3. For recommended wire size and type, see Table 1.

4. For Recommended grounding practices, see Table 2.

5. For KDM: The KDM is powered from a low voltage, energy- limited source. It can be mounted outside of a control panel if it is protected from mechanical damage.

NOTE: A 13 Vdc power supply must be

used any time more than one KDM is used. A maximum of two KDM, Data ControlBus™ Modules or S7810B Multi-Drop Switch Modules are allowed in any combination.

Application

Keyboard Display Module

Data ControlBus™ Module

Remote Reset Module

Communications Interface ControlBus Module™

13 Vdc full wave rectiﬁed transformer power input.

Table 1. Recommended Wire Size and Part Number.

Recommend-

ed Wire Size

22 AWG twowire twisted pair with ground, or ﬁve-wire. 22 AWG twowire twisted pair with ground, or ﬁve-wire. 22 AWG twowire twisted pair, insulated for low voltage.

22 AWG two-wire twisted pair with ground.

18 AWG wire, insulated for voltages and temperatures for given applications.

Ground Type Recommended Practice

Signal ground (KDM, Data ControlBus™ Module, Communications Interface ControlBus Module™).

Table 2. Recommended Grounding Practices.

Use the shield of the signal wire to ground the device to the signal ground terminals [3(c)] of each device. Connect the shield at both ends of the daisy chain to ground.

6. Recommended wire routing: a. ControlBus:

(1) Do not route the ControlBus cable

in conduits that carry line voltage circuits.

(2) Avoid routing the ControlBus cable

close to ignition transformer leadwires.

(3) Route the ControlBus cable outside

of conduit if properly supported and protected from damage.

b. Remote Reset:

(1) Do not run high voltage ignition

transformer wires in the same conduit with the Remote Reset wiring.

(2) Do not route Remote Reset wires in

conduit with line voltage circuits.

Recommended

Part Num-

ber

Belden 8723 shielded cable or equivalent. Belden 8723 shielded cable or equivalent.

—

Belden 8723 shielded cable or equivalent.

TTW60C, THW75C, THHN90C

7. Maximum wire lengths: (a) KDM: The maximum length

interconnecting wire is 4000 ft (1219m).

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

S7810 DATA CONTROLBUS MODULEª

A CABINET DOOR.

(b) Remote Reset leadwires: The

maximum length wire is 1000 ft

(MOUNTED ON 7800 SERIES RELAY MODULE)

(300m) to a Remote Reset pushbutton.

8. Install all electrical connectors.

9. Restore power to the panel.

KDM Display

The ﬁrst line of the KDM display provides current status of the burner sequence (STANDBY, PURGE, PILOT IGN, MAIN IGN, RUN and POSTPURGE), timing information (PURGE, PILOT IGN, MAIN IGN and POSTPURGE) in minutes and seconds, hold information (PURGE HOLD), and lockout information (Lockout, Fault Code, Message and Sequence). The second line will display selectable or preemptive messages. A selectable message supplies information for ﬂame strength, system status indication, system or self-diagnostics and troubleshooting. A preemptive message has parentheses around the message and supplies a detailed message to support the sequence status information. A preemptive message can also be a lockout message. A preemptive message replaces a selectable message to support the sequence status information. The 7800 SERIES Relay Module LED provide positive visual indication of the Relay Module sequence. The LED is energized simultaneously with the correct sequence description.

THREE WIRE SHIELDED CABLE MAY BE REQUIRED. TWO 120

OHM TERMINATING RESISTORS ARE REQUIRED FOR CONNECTIONS OVER 100 FEET. CABLE SHIELD MUST BE TERMINATED TO EARTH GROUND AT BOTH ENDS. IF SHIELDED CABLE IS NOT USED, TWISTED PAIR WIRE MUST BE USED.

WHEN CONNECTING THE KEYBOARD DISPLAY MODULE DATA CONTROLBUS MODULEª, OR REMOTE RESET MODULE EXTERNAL FROM THE CONTROL CABINET, APPROPRIAT E MEASURES MUST BE TAKEN TO MEET EN60730 SAFETY LOW VOLTAGE REQUIREMENTS (SEE APPROVALS).

221818A OR C EXTENSION CAN BE USED IN PLACE OF THE S7810 DATA CONTROLBUS MODULEª IF DISPLAY IS TO

Fig. 3. Wiring Keyboard Display Module for remote

mounting.

C (GND)

2345

120 OHM RESISTOR

2345

C (GND)

7800 REMOTE KEYBOARD DISPLAY MODULE

RESET

+13 VDC

RESET

+13 VDC

MOMENTARY PUSH BUTTON SWITCH

M5285C

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

C (GND)

MOMENTARY PUSHBUTTON SWITCH

+13 VDC

RESET

MOMENTARY PUSHBUTTON SWITCH

+13 VDC

RESET

RM78xx SERIES DEVICE WITH S7800 SERIES 5 OR GREATER DISPLAY.

PC/PLCGND

MULTI-DROP RS-485 COMMUNICATION BUS. UP TO 31 S7800 SERIES 5 OR GREATER DISPLAYS CAN BE CONNECTED TO A SINGLE BUS

WITHOUT AN RS-485 REPEATER. UP TO 99 MODBUS™ (SUBNETWORKS) CAN BE CONNECTED TO A BUS WITH RS-485 REPEATERS. WHEN USING AN RS-485 REPEATER, THE REPEATER MUST BE INSTALLED EVERY 30TH MODULE.

THE SUBNETWORKS MUST BE WIRED IN A DAISY CHAIN CONFIGURATION. RECOMMEND THAT THE PC/PLC BE AT ONE END OF THE

DAISY CHAIN.

MODBUS™ COMMUNICATION BUS TERMINATION RESISTORS:

A. WITHOUT RS-485 REPEATER: MODULES AT THE CLOSEST AND FARTHEST END OF THE DAISY CHAIN REQUIRE TERMINATION RESISTORS. INSTALL A 120 OHM, 1/4 WATT RESISTOR BETWEEN TERMINALS A AND B OF THE PC/PLC (IF INSTALLED AT ONE END THE DAISY CHAIN). INSTALL A 120 OHM, 1/4 WATT RESISTOR BETWEEN TERMINALS 7 AND 8 OF THE LAST S7810M MODBUS™ MODULE IN THE DAISY CHAIN.

B. WITH RS-485 REPEATER: WHEN AN RS-485 REATER IS USED, TWO DAISY CHAIN CONFIGURATIONS ARE EFFECTIVELY FORMED. MODULES AT THE CLOSEST AND FARTHEST ENDS OF EACH DAISY CHAIN REQUIRE TERMINATION RESISTORS. INSTALL A 120 OHM, 1/4 WATT RESISTOR BETWEEN TERMINALS A AND B OF THE PC/PLC (IF INSTALLED AT THE END OF THE DAISY CHAIN. INSTALL A 120 OHM, 1/4 WATT RESISTOR BETWEEN INPUT TERMINALS DATA+ AND DATA- OF THE RS-485 REPEATER. INSTALL A 120 OHM, 1/4 WATT RESISTOR BETWEEN TERMINALS 7 AND 8 OF THE LAST S7810M MODBUS™ MODULE IN THE ADDITIONAL DAISY CHAIN.

LOCAL RS-485 COMMUNICATIONS BUS. THE DEVICES ON THIS BUS MUST BE WIRED IN A DAISY CHAIN CONFIGURATION. THE ORDER OF

INTERCONNECTION IS NOT IMPORTANT. THE MODULES ON THE CLOSEST AND FARTHEST ENDS OF THE DAISY CHAIN REQUIRE A 120 OHM, 1/4 WATT TERMINATION RESISTOR BETWEEN TERMINALS 1 AND 2 OR A AND B.

THREE WIRE SHIELDED CABLE (BELDEN 8723 SHIELDED OR EQUIVALENT) IS RECOMMENDED AND SHOULD BE GROUNDED AS

FOLLOWS: IF NO INTERFERENCE IS PRESENT, OR TO REDUCE CAPA CITIVE INTERFERENCE, THE SHIELD SHOULD BE GROUNDED AT ONE END. WHEN GROUNDING ONLY ONE END OF THE THE SHIELD, THE SHIELD END CLOSEST TO THE S7810M MODBUS™ MODULE SHOULD BE ATTACHED TO EARTH GROUND. TO REDUCE INDUCTIVE INTERFERENCE (RF INTERFERENCE), THE SHIELD SHOULD BE GROUNDED AT BOTH ENDS.

TERMINAL NUMBERS ARE ON 203541 5-WIRE CONNECTOR (SUPPLIED WITH REMOTE MOUNTING BRACKET).

RS-485 BUS

M24190

Fig. 4. Wiring for ModBusTM Feature.

NOTE: LED has been replaced by block characters visible on the MB address setup menu.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

KEYBOARD

4 LINES

LINE WITH

doesn’t make sense for the button action, selecting the button is ignored.

BUTTONS

Fig. 5. S7800 Keyboard Display Module

Keyboard Functions

The keyboard contains six push-buttons that are used to navigate on each page and between pages on the display module (see Fig. 6). These buttons generally have the following functions:

• Up arrow - move up on a page or increment a value for an input control

• Down arrow - move down on a page or decrement a value for an input control

• Left arrow - move to the left on a page (tab left) or go to a previous page

• Right arrow - move to the right on a page (tab right) or go to the next page when applicable

• OK - approve/accept the highlighted item or go to the next page when applicable

• Home - go to the Home (Main Status) page

When the burner control module is in a Lockout condition the “Home” button navigates to the Lockout page instead of the Home page to display the lockout.

These buttons are acted on when they are pressed and released. In some cases a button can be pressed and held, i.e., not released, for repeated execution of the button (arrow buttons). Buttons are active on some pages only when the action for the button makes sense for the position of the input focus on the page. If the input focus

Fig. 6. Keyboard buttons.

Page Structure

The Home and Lockout pages display text using a larger font size than all other pages so that information on them can be more easily viewed from distances farther away from the display module (see Fig. 7 and Fig.

8).

Up to 4-5 lines of text are displayed (dependent on font size) at a time on the page. When the page has more than 4 lines of text to display a scroll bar is present on the right-hand side of the page to indicate this situation. The “Up arrow” and “Down arrow” buttons are used to scroll up and down the lines of the page. Each line is highlighted with a white background to indicate that it currently has input focus for any button actions. The scroll bar adjusts to give a relative position of the current view with respect to all lines that the page can display.

When a line has a right arrow symbol positioned on the righthand side it indicates that this line can navigate to another page, “Next page”, related to the subject of the line when that line has input focus. A “Right arrow” or “OK” button can be pressed when the focus is on this line to navigate to the next page.

Fig. 7. Home page

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SCROLL BAR

RIGHT ARROW SYMBOL INDICATES “NEXT” PAGE IS AN OPTION

INPUT FOCUS

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

4 LINES

TION

BAR

W INPUT

GO TO LOCKOUT DETAIL

Fig. 8. Lockout page

For pages other than Home and Lockout a smaller font size is used to display the text and pages have a format like the one shown in Fig. 9.

TITLE BAR

MAIN BODY

NAVIGA

Fig. 9. Page structure

The top line of the page is a title that describes the context or purpose of the page (see Fig. 9).The bottom line of the page is a navigation bar which indicates the more important button actions that can be performed for the current input focus (see Fig. 10). The middle or main body of the page contains the lines that show information or allow for user input. Up to 5 lines of text may be displayed in the main body. Solid lines separate the title and navigation bar from the main body.

INPUT FOCUS

Home Page

The Home page is the main status page that displays primary status of the burner control operation (see Fig. 11). This page is intended to be the primary one displayed most often when the user is not speciﬁcally looking for other information or conﬁguring the display. The following information is displayed by default:

• Burner control sequence or lockout state

• Flame signal strength

• Total cycles count

• Total run-time hours count

• Annunciator connection status

• Remote command status

The burner control sequence state may be displayed in one or two lines due to the length of the text. In case of two lines the remaining lines are pushed down to make room for the second line.

This page also permits navigation to the following pages:

• Lockout message (when burner control is in a lockout condition)

• Fault history

• Burner control diagnostic status

• Annunciator diagnostic status (when annunciator is connected)

• Burner control commissioning (supported models only)

• Display menu

MAY BE 1 OR 2 LINES (SEQUENCE STATE)

NE FOCUS

Fig. 10. Input focus

An item on a page that has input focus is usually highlighted with an inverse look (black text on white background) to distinguish it from the rest of the page. The arrow buttons move the input focus to another selectable item if another one exists on the page (some pages may only have a single focus item).

For pages that allow user input (see Fig.

10) the input value is edited on the page and then is acknowledged or conﬁrmed at another tab position on the page (“Yes” tab

Fig. 11. Home page status

An additional status line can be displayed between the burner control sequence line(s) and the ﬂame signal strength line when conﬁgured (see “Selected Status Message” on page 30). Fig. 12 shows an example with the T6 terminal (“Demand”) status displayed.

in the above example). This conﬁrmation action permits the user to cancel the editing and not commit to the change or to accept the edited value.

Fig. 12. Home page status

9 320011007

GO TO FAULT HISTORY GO TO BURNER DIAGNOSTICS

GO TO COMISSIONING (ONLY SOME MODELS)

GO TO DISPLAY

OPTIONAL SELECTED STATUS

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The lines are scrollable using the up and down arrows. For lines that navigate to another page the right arrow or OK button is pressed when the line has input focus (highlighted) to go to the new page.

TROUBLESHOOTING

After the KDM is installed, return the 7800 SERIES to normal operation, restore power and run the system through at least one complete automatic cycle. For complete Troubleshooting and System Checkout information, see form 65-0229.

7800 SERIES System Diagnostics

Troubleshooting control system equipment failures is made easier with the 7800 SERIES self-diagnostics and ﬁrst-out annunciation. The S7800 provides visual annunciation by displaying a fault code and fault or hold message on the display.

Self-diagnostics of the 7800 SERIES enables it to detect and annunciate both external and internal system problems. Internal faults and external faults such as interlock failures, ﬂame failures and false ﬂame signals are annunciated by the KDM via the 7800 SERIES Relay Module.

The KDM displays a sequence status message indicating STANDBY, PREPURGE, PREIGNITION, SAFETY 1, PILOT IGN, PILOT STAB., MAIN IGN, RUN or POSTPURGE, as appropriate. The selectable messages also provide visual indication of current status and historical status of the equipment, such as: Flame Signal, Total Cycles, Total Hours, Fault History, Diagnostic Information and Expanded Annunciator terminal status (if used). With this information, most problems can be diagnosed without extensive trial-and-error testing.

Table 3 provides the sequence and status hold messages. These messages along with the fault messages (Table 5) can be viewed on-line in the KDM.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Sequence Status

The Keyboard Display Module (KDM) indicates the burner status, INITIATE, a stabilization period for the relay module to check for any ﬂuctuations in ac line

INITIATE mm:ss

voltage inputs or control inputs on power up or during normal operation. The timing of the INITIATE period is either two seconds or ten seconds, depending on the model, before entering STANDBY.

If the relay module is in an INITIATE HOLD status, the following conditions could exist:

The KDM indicates the burner status and that it is waiting for excess line noise

INITIATE HOLD: (AC Frequency/ Noise)

to clear up, which prevents sufﬁcient reading of the line voltage inputs. The burner sequence does not advance into STANDBY until the excess line noise ceases or a line frequency error occurs; this is caused by using a 60 Hz device on a 50 Hz line, or vice versa on devices with a date code earlier than 9804, is

corrected. INITIATE HOLD: (AC Line Dropout)

The KDM indicates the burner status and that ac line power has momentarily

dropped out. The burner sequence does not advance into STANDBY until the ac

line voltage has stabilized throughout the INITIATE sequence.

The KDM indicates the burner status and that line frequency is faster than the INITIATE HOLD: (AC Frequency)

expected value. The burner sequence does not advance into STANDBY until the

line frequency returns to the proper value; this is perhaps caused by using a 60

Hz device on a 50 Hz line for devices with a date code earlier than 9804.

INITIATE HOLD: (Low Line Voltage)

The KDM indicates the burner status and that low line voltage (10% lower

than rated voltage) has occurred. The burner sequence does not advance

into STANDBY until the line voltage is at a sufﬁcient level for proper operating

parameters.

The KDM indicates the burner status, STANDBY. The burner can be placed in

STANDBY by opening the burner switch or if the operating controller indicates

STANDBY

its setpoint is satisﬁed. If a demand is present for burner operation, the burner

sequence does not advance from STANDBY to PURGE until the recycle limits

close. If an Expanded Annunciator is connected, the display messages are

enhanced. If the relay module is in a STANDBY HOLD status, the following conditions could exist:

STANDBY HOLD: F/G (Flame Detected)

STANDBY HOLD: T20(Pre-Ignition Interlock)

STANDBY HOLD: T7(Lockout Interlock)

STANDBY HOLD: T7 (Running Interlock) EC/ RM7850

The KDM indicates the burner status and that a ﬂame is detected. A demand

is present for burner operation. The sequence does not advance to PREPURGE

until the ﬂame signal clears. If the ﬂame signal does not clear within 40 sec-

onds, the relay module locks out.

The KDM indicates the burner status and that the Pre-Ignition Interlock is not

closed. A demand is present for burner operation, but the burner sequence does

not advance to PREPURGE until the Pre-Ignition Interlock proves closed. If this

time exceeds a 30 second hold, the relay module locks out.

The KDM indicates the burner status and that the Lockout Interlock is closed.

A demand is present for burner operation, but the burner sequence does not

advance to PREPURGE until the Lockout Interlock proves open. If this time

exceeds the 120 second hold, the relay module locks out.

The KDM indicates the burner status and that the Running Interlock is closed.

A demand is present for burner operation, but the burner sequence does not

advance to PREPURGE until the Running Interlock proves open. If this time

exceeds the 120 second hold, the relay module locks out.

The KDM indicates the burner status, PURGE, which is the period of time the PURGE

blower motor is running before the Ignition period. The timing of the PURGE

period is selectable. If the relay module is in a PURGE HOLD status, the following conditions could exist: PURGE HOLD: T19 (High Fire Switch)

PURGE DELAY: T19 (High Fire Switch Jumpered)

PURGE HOLD: TEST (Run/Test Switch)

11 320011007

The KDM indicates the burner status and that the High Fire Switch is not closed.

The ﬁring rate motor is driving to its PURGE rate position. If this time exceeds

four minutes and ﬁfteen seconds, the relay module locks out.

The KDM indicates the burner status and that the High Fire Switch is jumpered.

The High Fire Switch is bypassed, welded or otherwise prematurely closed. The

system automatically adds 30 seconds to allow the ﬁring rate motor additional

drive time to reach or near the open damper position before starting the PURGE

sequence.

The KDM indicates the burner status and that the Run/Test Switch is in the

TEST position. The sequence does not continue until the Run/Test Switch is

placed in the RUN position.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Sequence Status

PURGE HOLD: T18 (Low Fire Switch Jumpered)

PURGE HOLD: F/G(Flame Detected)

PURGE HOLD: T18 (Low Fire Switch)

PURGE HOLD: T7 (Running Interlock)

PILOT IGN mm:ss

The KDM indicates the burner status and that the Low Fire Switch is jumpered.

The Low Fire Switch is bypassed, welded or otherwise prematurely closed. The

system automatically adds 30 seconds to allow the ﬁring rate motor addition-

al drive time to reach or near the closed damper position before starting the

ignition sequence.

The KDM indicates the burner status and that a ﬂame is detected. The burner

sequence does not advance through PREPURGE because a ﬂame is detected

as being present. The sequence holds waiting for the ﬂame signal to clear. If the

time exceeds 30 seconds, the relay module locks out.

The KDM indicates the burner status and that the Low Fire Switch is not closed.

The ﬁring rate motor is driving to its Low Fire position in preparation for Ignition

Trials. If this time exceeds four minutes and ﬁfteen seconds, the relay module

locks out.

The KDM indicates the burner status and that the Running Interlock is not

closed. The sequence does not advance to ignition until the Running Interlock

proves closed. If this time exceeds 30 seconds, the relay module locks out.

The KDM indicates the burner status, PILOT IGN, and the timing of the PILOT

IGN trial begins, in seconds. During this period, the relay module permits the

pilot valve to open and the pilot ﬂame to establish. If the relay module is in a PILOT HOLD status, the following conditions could exist: PILOT HOLD: TEST (Run/Test Switch)

The KDM indicates the burner status, PILOT IGN, and that the Run/Test Switch

is in the TEST position. The sequence does not continue until the Run/Test

Switch is placed in the RUN position.

The KDM indicates the burner status, MAIN IGN, and the timing of the MAIN MAIN IGN mm:ss

IGN trial begins, in seconds. During this period, the relay module permits the

main valve to open and the main ﬂame to establish.

The KDM indicates the burner status, RUN, which is the period of time after the RUN

Ignition Trials and before the operating controller setpoint is reached. During

this time, the burner is ﬁring under control of the ﬁring rate control. If the relay module is in a RUN HOLD status, the following condition could exist: RUN LOWFIRE: TEST (Run/Test Switch)

POSTPURGE mm:ss

Waiting for connection...

The KDM indicates the burner status and that the Run/Test Switch is in the

TEST position. Normal modulation or operation does not continue until the

Run/Test Switch is placed in the RUN position.

The KDM indicates the burner status, POSTPURGE, which is the period of time

after the RUN period when the blower motor continues to run. The timing of the

POSTPURGE period is ﬁfteen seconds.

The KDM has power but is waiting to receive a signal from the relay module to

continue operation.

The KDM indicates the burner status, RESET/ALARM TEST. This condition inRESET/ALARM TEST

dicates that the reset button is pressed. If it is held for more than four seconds,

the alarm output is energized. The alarm output is de-energized when the reset

button is released. Additional Sequence Status Information When An Expanded Annunciator is Connected to the Relay Module: BURNER OFF: T6 (Burner Switch)

The KDM indicates the Burner Switch is not closed. The burner sequence does

not advance to PREPURGE until the Burner Switch closes.

The KDM indicates the burner status, STANDBY, and that the Operating Control STANDBY

is not closed. The burner sequence does not advance to PREPURGE until the

Operating Control closes. STANDBY HOLD: T6 (EA Hold Message)

STANDBY HOLD: T6 (Circuit Fault)

Table 3. Keyboard Display Module Sequence and Status Hold Messages .

The KDM indicates the burner status, STANDBY, and that a limit is not closed.

The burner sequence does not advance to PREPURGE until one or all limits

close downstream from the Operating Control.

The KDM indicates the burner status, STANDBY, and that the control input is not

closed. The burner sequence does not advance to PREPURGE until the control

input closes.

320011007 12

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The S7800 provides diagnostic information to aid the service mechanic in obtaining information when troubleshooting the system. See Table 4 for information on accessing historical and diagnostic selectable messages. Information available in the Diagnostic Information includes Device Type, Software Revision, Manufacturing Code, Flame Ampliﬁer Type, Flame Failure Response Time (FFRT), Selectable Jumper Conﬁguration Status, Run/ Test Switch Status and Terminal Status.

Information from the above table and Table 5 are viewable in the display module. The troubleshooting guide can be accessed from the Display Menu (see Fig. 13). A menu is displayed that permits access to these different sections of the guide:

• Introduction

• Faults

• Sequence and Status Hold messages

Fig. 13. Troubleshooting guide menu

The Introduction section contains brief troubleshooting tips and is presented in a scrollable paragraph form for reading using the up and down arrow buttons (see Fig. 14). The navigation bar contains the following commands that can be selected using the right and left arrow buttons:

• “Faults” – go to Troubleshooting guide Faults section

• “Exit” – exit Introduction section and return back to Troubleshooting guide menu

• “Sequence” – go to Troubleshooting guide Sequence/Status Hold section

Pressing the OK button executes the command with the current input focus.

Fig. 14. Troubleshooting guide introduction

The Faults section presents a description and recommended actions for each fault that the burner control module may have (see Fig. 15). The information is presented for a single fault code and when more lines are needed to display the information than can ﬁt on the page, the up and down arrow buttons are used to scroll through the lines.

Fig. 15. Troubleshooting guide faults section

The Faults section can be accessed starting at the beginning (see Fig. 15) or by going directly to a speciﬁc fault code (see Fig. 16).

Fig. 16. Troubleshooting guide direct fault access

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The Faults navigation bar contains the following commands that can be selected using the right and left arrow buttons:

• “Prev fault” – go to previous fault code

• “Exit” - exit Faults section and return back to Troubleshooting guide menu

• “Next fault” – go to next fault code Pressing the OK button executes the command with the current input focus.

The Sequence and Status Hold section explains the meaning of different sequence state and status hold messages that can display for a burner control on the display module (see Fig. 17). The up and down arrow buttons are used to scroll the lines of the explanation.

Fig. 17. Troubleshooting guide sequence section

The Sequence/Status Hold navigation bar (see Fig. 18) contains the following commands that can be selected using the right and left arrow buttons:

• “Prev sequence” – go to previous sequence/status hold message

• “Exit” - exit Sequence/Status Hold section and return back to Troubleshooting guide menu

• “Next sequence” – go to next sequence/status hold message

Pressing the OK button executes the command with the current input focus.

Fig. 18. Troubleshooting guide sequence section (continued)

Historical Information Index

The S7800 displays historical information for the six most recent lockouts. Each of the six lockout records retains the cycle when the fault occurred, a fault code, a fault message, and burner status when the fault occurred. The fault history can be accessed from either the Home or Display Menu pages (see Fig. 19).

Fig. 19. Fault history menu

The fault history is displayed in order from most recent lockout, #1, on the ﬁrst line to the oldest lockout on the last line. The up and down arrow buttons are used to scroll to the lockout desired and the right arrow or OK button is pressed to view the fault information (see Fig. 20) for that lockout.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fig. 20. Fault history record

The fault record is scrollable using the up and down arrow buttons to see all lines of the information. The fault description can take 1 or 2 lines to display and is presented on the line(s) below the fault code line. Below the sequence time line is displayed the sequence state that the burner control was in at the time of the fault. This state description may take 1 or 2 lines to display also.

The left arrow button can be pressed to exit this fault record and go back to the Fault history menu (previous page).

The title bar displays which fault history record is displayed and indicates that the Troubleshooting guide can be navigated to using the “Next page” (right arrow) button (see Fig. 21).

GO TO TROUBLESHOOTING GUIDE

Fig. 21. Troubleshooting guide from fault history record

When the “Exit” command in the troubleshooting guide has input focus and the OK button is pressed control returns back to the fault history record.

Step Operation Press Display Comments

Press hi buttons to access

1. Diagnostic Information.

Press u button to access Diag-

2. nostic Information.

t u

STANDBY Diagnostic Information>

Use the Down/Up arrow buttons to access the "Diagnostic information" line. Use the right arrow or OK button to access the Diagnostic Information. Push the Down/Up arrow

Continue display of Diagnostic

3. Information.

Device RM7800<

buttons to scroll through the burner control diagnostic status.

Continue through remaining

diagnostic information display

— — —

following step 3 as required.

Another display can be

Press the t arrow button to

5. return to the Home page

t u

STANDBY Diagnostic Information>

selected or discontinue accessing Diagnostic Information review.

Table 4. Accessing Historical and Diagnostic Selectable Messages.

SERVICE NOTE: If the Keyboard Display Module screen is scrambled, remove and reinstall

the Keyboard Display Module and reset the 7800 SERIES Relay Module.

SERVICE NOTE: Reset the 7800 SERIES Relay Module by pressing the reset push button

on the relay module or pressing a remote reset push button wired through the Keyboard Display Module, Data ControlBus™ Module or Remote Reset Module. A power-up reset will cause an electrical reset of the 7800 SERIES Relay Module but will not reset a lockout condition.

Lockout Messages

When the 7800 SERIES is locked out, a standard lockout message is displayed unless the Call for Service feature is enabled. When the Call for Service feature is enabled a custom lockout message is displayed instead. The standard lockout message (see Fig. 22) is automatically displayed when the lockout initially occurs unless the user happens to be

15 320011007

Page 16

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

ANNUNCIATED

editing a parameter on a page. In this case the lockout message waits until the user is done editing and exits the page.

FAULT CODE

DESCRIPTION

STATE AT TIME OF FAULT

GO TO LOCKOUT DETAIL

Fig. 22. Lockout message

Up to 4 lines are displayed in the standard lockout message. The top line shows the numeric fault code that determined the lockout. A description of this fault is shown on the second line and possibly on the third line if the description requires two lines to display it (only one line needed in the above example). On the next line(s) the burner control sequence state at the time of the lockout is displayed. The sequence state may need 1 or 2 lines to display (Fig. 22 required two lines). Since a maximum of 4 lines are displayed in this message, in the case when both the fault description and sequence state each need 2 lines to display their text, the second line of the sequence state is dropped to make room.

FAULT CODE

ANNUNCIATED DESCRIPTION

Fig. 23. Annunciated lockout message

When an annunciator is connected to the burner control system it may annunciate the lockout to provide more detailed information regarding the lockout. In this case the fault code is annunciated with a fault code letter and the fault description identiﬁes more speciﬁcally the cause of the fault (see Fig. 23 for an example).

On the top line of the message the input focus is on a ﬂashing “Detail” tab that permits the user to view more details about the lockout. Pressing the “Right arrow” or “OK” button navigates to a Lockout Detail page (see the following ﬁgure) that provides the following information:

• Fault code

• Fault description

• Cycle count at the time of the fault

• Run-time hours at the time of the fault

• Sequence time at the time of the fault

• Operation sequence state at the time of the fault

Fig. 24. Lockout detail

The information may take more lines to display than can ﬁt on the 5 main body lines. In this case the a scroll bar is displayed, and the up and down arrow buttons can be used to scroll to view all lines.

A ﬂashing “Troubleshoot” tab is displayed in the title bar that has input focus to indicate that the troubleshooting guide can be navigated to display what is recommended for this fault (see Fig. 25).

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

LOCKOUT

Fig. 25. Troubleshooting guide

When the Call for Service feature is enabled a custom message up to 8 lines is displayed instead of the standard lockout message (see Fig. 26 for an example). Only 4 lines of the custom message are displayed at a time; the ﬁrst 4 lines are displayed for 2 seconds, followed by the remaining lines for 2 seconds. The page alternates between these two sets of lines continuously. If the custom message is 4 lines or less, no alternation is needed.

GO TO LOCKOUT DETAIL

Fig. 26. Call for Service lockout message

The ﬁrst or top line of the message is not custom and is the same as the top line in the standard lockout message. This line permits the user to navigate to the Lockout Detail page.

The lockout message (standard or custom) displays continuously while the lockout condition persists. The user may elect to exit the message to view other pages by pressing the “Left arrow” or “Home” button which navigates to the Home page. The lockout condition is displayed on the Home page (see Fig. 27) which permits the user to re-display the lockout message. Pressing the “Right arrow” button when the lockout fault code line has input focus causes the lockout message to be re-displayed.

C0NDITION

GO TO LOCKOUT MESSAGE

Fig. 27. Lockout indication on Home page

The following table describes the possible faults a burner control may have and the recommended action.

Fault Code System Failure

Make sure the purge card is seated properly. Inspect the purge card and connector on the relay module for

damage or contaminants. Fault 1 *No Purge Card*

No card is plugged into the purge card slot.

Reset and sequence the relay module.

If the fault code reappears, replace the purge card.

Reset and sequence the relay module.

f the fault persists, replace the relay module.

17 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code System Failure

Fault 2 *AC Frequen/ Noise* Fault 3 *AC Line Dropout* Fault 4 *AC Frequency* Fault 5*Low Line Voltage*

Excess noise or device running on slow AC.

AC line dropout detected.

Device running on fast AC.

Low AC line detected.

Check the relay module and display module connections.

Reset and sequence the relay module.

Check the relay module power supply and make sure that

both frequency and voltage meet the speciﬁcations.

Check the backup power supply, as appropriate.

Make sure the purge card is seated properly.

Inspect the purge card and connector on the relay module for Fault 6 *Purge Card Error*

Purge card timing changed since card was initially read.

damage or contaminants.

Reset and sequence the relay module.

If the fault code reappears, replace the purge card.

Reset and sequence the relay module.

If the fault persists, replace the relay module. Fault 7 *Flame Ampliﬁer*

Flame sensed when ﬂame not present.

Check wiring and correct any errors. Make sure that ﬂame

sensor wires are in separate conduits. Check for noise cou-

pling into the ﬂame detector leadwires.

Make sure that ﬂame detector and ﬂame ampliﬁer are com-

patible.

Fault 8 *Flame Amp/ Shutter*

Flame sensed when no signal expected during shutter-check or Ampli-Check versions.

Remove the ﬂame ampliﬁer and inspect connections. Reseat

the ampliﬁer.

Reset and sequence the relay module.

If the code reappears, replace the ampliﬁer and/or the ﬂame

detector.

If the fault persists, replace the relay module.

Check that ﬂame is not present in the combustion chamber;

correct any errors.

Check wiring and correct any errors. Make sure that ﬂame

Fault 9 *Flame Detected*

Flame sensed when shutter open and no ﬂame is expected during STANDBY.

sensor wires are in separate conduits. Check for noise cou-

pling into ﬂame detector leadwires.

Remove the ﬂame ampliﬁer and inspect its connections.

Reseat the ampliﬁer. Reset and sequence the relay module.

If the code reappears, replace the ampliﬁer and/or the ﬂame

detector.

If the fault persists, replace the relay module.

Check wiring and correct any errors.

Fault 10 *Pre-Ignition ILK*

Pre-Ignition Interlock fault during STANDBY *(EC/RM7800, 7840, 7838B only).

Check Pre-Ignition Interlock switches to assure proper func-

tioning.

Check fuel valve operation.

Reset and sequence the relay module; monitor the Pre-Igni-

tion Interlock status.

If the code persists, replace the relay module.

Check wiring to make sure that interlocks are connected

properly between terminals 6 and 7. Correct any errors.

Reset and sequence the relay module.

If the fault persists, measure the voltage between terminals 6

and G (ground), then terminals 7 and G. If there is line supply

Fault 11 *Running ILK On*

Running Interlock powered at improper sequence point.

voltage present at terminal 6 when the controller is off, the

controller switch may be bad or is jumpered.

If steps 1 through 3 are correct and there is line supply volt-

age present at terminal 7 when the controller is closed and

the fault persists, check for a welded or jumpered Running

Interlock, Lockout Interlock, or Airﬂow Switch. Correct any

errors.

If steps 1 through 4 are correct and the fault persists, replace

the relay module.

320011007 18

Page 19

Fault Code System Failure

Fault 12 *Lockout ILK On* Fault 13 *Airﬂow Sw. On*

Fault 14 *High Fire Sw.*

Fault 15 *Flame Detected*

Fault 16 *Flame-Out Timer*

Fault 17 *Main Flame Failure*

Fault 18 *Flame Detected*

Lockout Interlock powered at improper point in sequence. Combustion airﬂow interlock fault during STANDBY.

High Fire Interlock Switch failure to close during PREPURGE.

Flame sensed when no ﬂame is expected during STANDBY.

No ﬂame detected during Pilot Flame Establishing Period.

Main ﬂame failure during RUN after ﬂame is established and on for at least 10 seconds.

Flame sensed when shutter is open and no ﬂame is expected during PREPURGE.

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Check wiring and correct any errors.

Reset and sequence the relay module.

Use either the manual motor potentiometer to drive the motor

to the High Fire position or use the Run/Test Switch option, if

available. Sequence to Prepurge drive to High Fire and place

in the Test position. Adjust the High Fire Switch while in this

state to make sure that it closes properly.

Measure the voltage between terminal 19 and G (ground)

while in the Prepurge drive to High Fire state. Line supply

voltage should be present. If not, the switch adjustment is

incorrect and/or the switch is defective and needs replacing.

Reset and sequence the relay module. If line supply voltage

was present between the High Fire Switch and terminal 19,

and the fault still persists, replace the relay module.

Check that the ﬂame is not present in the combustion cham-

ber; correct any errors.

Make sure that the ﬂame ampliﬁer and ﬂame detector are

compatible.

Check wiring and correct any errors.

Remove the ﬂame ampliﬁer and inspect the connections.

Reseat the ampliﬁer.

Reset and sequence the relay module.

If the code reappears, replace the ampliﬁer and/or the ﬂame

detector.

If the fault persists, replace the relay module.

Measure the ﬂame signal. If one exists, make sure it meets

speciﬁcations.

Make any necessary burner adjustments using manufacturer

instructions. Make sure that the ﬂame ampliﬁer and ﬂame

detector are compatible.

If the code reappears, replace the ampliﬁer and/or the ﬂame

detector.

If the fault persists, replace the relay module.

Inspect the main fuel valve(s) and connection(s).

Make sure that the fuel pressure is high enough to supply fuel

to the combustion chamber.

Check the ﬂame detector sighting for adequate ﬂame signal

throughout the burner ﬁring rate.

Check that ﬂame is not present in the combustion chamber.

Correct any errors.

Make sure that the ﬂame ampliﬁer and ﬂame detector are

compatible.

Check the wiring and correct any errors. Make sure F and

G wires are in individual conduits and protected from stray

noise pickup.

Remove the ﬂame ampliﬁer and inspect the connectors.

Reseat the ﬂame ampliﬁer.

Reset and sequence the relay module.

If the code reappears, replace the ﬂame ampliﬁer and/or the

ﬂame detector.

If the fault persists, replace the relay module.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code System Failure

Fault 19 *Main Flame Ignition*

Flame was lost during MFEP or the ﬁrst 10 seconds of the RUN state.

Inspect the main fuel valve(s) and connection(s).

Make sure that the fuel pressure is high enough to supply fuel

to the combustion chamber.

Make sure the ﬂame detector is positioned to obtain the

required ﬂame signal strength; reset and recycle.

Check wiring and correct any errors.

Reset and sequence the relay module.

Use either the manual motor potentiometer to drive the motor

to the Low Fire position or use the Run/Test Switch option, if

available. Sequence to Prepurge drive to Low Fire and place in

Fault 20 *Low Fire Switch Off*

Low Fire Interlock switch failure to close during PREPURGE.

the Test position. Adjust the Low Fire Switch to make sure that

it closes properly.

Measure the voltage between terminal 18 and G (ground)

while in the Prepurge drive to Low Fire state. Line supply

voltage should be present. If not, the switch adjustment is

incorrect and/or the switch is defective and needs replacing.

Reset and sequence the relay module. If line supply voltage

was present between the Low Fire Switch and terminal 18,

and the fault still persists, replace the relay module.

Check wiring; correct any errors.

Inspect the fan; make sure there is no blockage of the air

intake and that it is supplying air.

Make sure the Interlock Switches are working properly and

Fault 21 *Running ILK*

Running Interlock fault during PREPURGE.

that all switch contacts are free of contaminants.

Reset and sequence the relay module to PREPURGE (place

the

Run/Test Switch in the Test position, if available). Measure

the voltage between terminals 7 and G (ground). Line voltage

should be present.

If steps 1 through 4 are correct and the fault persists, replace

the relay module. Fault 22 *Lockout ILK*

Fault 23 *Airﬂow Switch*

Fault 24 *Internal fault*

Fault 25 *Internal fault*

Lockout Interlock fault during PREPURGE.

Combustion airﬂow interlock fault during PREPURGE. The ﬂame interlock (relay module) was on when it should be off. The ﬂame interlock (relay module) was off when it should be on.

Check for F leadwire routing. Make sure routing is in its con-

duit and isolated from noise-producing circuits.

Check wiring and correct any errors.

Make sure that the Manual Open Valve Switch is fully open.

Make sure that the Manual Open Valve Switch is functioning

Fault 26 *Man-Open Sw. Off*

The Manual Open Valve Switch was off when it should be on (RM7838B only).

properly and that the switch contacts are free from contam-

inants.

Reset and sequence the relay module.

Make sure that the Manual Open Valve Switch provides an

electrical path when closed. Verify that the relay module is

receiving power at terminal 17.

If steps 1 through 5 are correct and the fault persists, replace

the relay module.

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Page 21

Fault Code System Failure

Fault 27 *Start Switch On*

Start Switch was on during PREPURGE (RM7838A, RM7838B only).

Fault 28 *Pilot Flame

Pilot ﬂame failure.

Fail*

Fault 29 *Lockout

Lockout Interlock fault.

ILK*

Fault 30 *Running

Running Interlock fault.

ILK*

Fault 31 *Low Fire Switch Off*

Low Fire Interlock Switch failure to close during RUN (RM7838B only).

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Start Switch held on too long.

Check wiring; verify that Start Switch is correctly connected.

Make sure that the Start Switch is functioning properly and

that the switch contacts are free of contaminants.

Reset and sequence the relay module to PREPURGE; set the

Run/Test Switch to Test.

Make sure there is no power at terminal 6 during PREPURGE.

If steps 1 through 3 are correct and the fault persists, replace

the relay module.

Check pilot valve wiring and operation. Correct any errors.

Check fuel supply.

Check pilot pressure and repeat pilot turndown test.

Check ignition transformer electrode, ﬂame detector, ﬂame

detector sighting and ﬂame ampliﬁer.

If steps 1 through 4 are correct and the fault persists, replace

the relay module.

Check wiring; correct any errors.

Inspect the fan; make sure that there is no blockage of the air

intake and that it is supplying air.

Make sure that the Lockout Interlock Switches are working

properly and that all switch contacts are free of contaminants.

Reset and sequence the relay module to PREPURGE (place

the

Run/Test Switch in the Test position, if available). Measure

the voltage between terminals 7 and G (ground). Line voltage

should be present.

If steps 1 through 4 are correct and the fault persists, replace

the relay module.

Inspect the Running Interlocks, including the Airﬂow Switch,

and the connections.

Make sure that the Running Interlocks, including the Airﬂow

Switch, are functioning properly and that switch contacts are

free of contaminants.

Reset and sequence the relay module to PREPURGE. Set the

Run/Test Switch, if available, to Test. Measure the voltage

between

terminal 7 and G (ground). Line voltage should be present.

If steps 1 through 3 are correct and the fault persists, replace

the relay module.

Check wiring; correct any errors.

Reset and sequence the relay module.

Use either the manual motor position to drive the motor to

the Low Fire position, or use the Run/Test Switch option, if

available. Sequence to Run drive to Low Fire and place in the

Test position. Adjust the Low Fire Switch while in this state to

make sure it is closing properly.

While in Run, drive to Low Fire state, measure the voltage

between terminal 18 and G (ground). Line voltage should be

present. If not, the switch adjustment is incorrect and/or the

switch is defective and needs replacement.

Reset and sequence the relay module. If line voltage was

present between the Low Fire Switch and terminal 18 and the

fault persists, replace the relay module.

21 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code System Failure

Check wiring; correct any errors.

Inspect the fan; make sure there is no blockage of the air

intake and it is supplying air.

Make sure the Airﬂow Interlock Switches are working properly

Fault 32 *Airﬂow Switch*

Fault 33 *Pre-Ignition ILK*

Fault 34 *Control On*

Fault 35 *Call Service*

Fault 36 *Call Service*

Fault 37 *Call Service*

Fault 38 *Call Service*

Fault 39 *Call Service*

Fault 40 *Call Service* Fault 41*Main Valve On*

Fault 42 *Pilot Valve On*

Fault 43 *Ignition On*

Fault 44 *Pilot Valve 2 On*

Combustion Airﬂow Interlock fault.

Pre-Ignition interlock fault.

CTL input was energized at the wrong time for the relay module. This fault implies a ﬁeld wiring error. Safety relay was off when it should be on or a fuse has blown. Main valve terminal was off when it should be on. Pilot (ignition) valve terminal was off when it should be on. Ignition terminal was off when it should be on. V2S valve terminal (usually terminal 21) was off when it should be on. Safety relay was on when it should be off. Main valve terminal was on when it should be off.

Pilot (ignition) valve terminal was on when it should be off.

Ignition terminal was on when it should be off. V2S valve terminal, used as a pilot, is on when it should be off.

and all switch contacts are free of contaminants.

Reset and sequence the relay module to PREPURGE. Place

the

Run/Test Switch in the Test position, if available. Measure

the voltage between terminals 7 and G (ground). Line voltage

should be present.

If steps 1 through 4 are correct and the fault persists, replace

the relay module.

Check wiring; correct any errors.

Inspect the Pre-Ignition Interlock switches and make sure

they function properly.

Check fuel valve operation. Valve must close within ﬁve

seconds.

Reset and sequence the relay module.

During STANDBY or PREPURGE, measure the voltage be-

tween terminal 20 and G (ground). For EC/RM7810, 7820,

7830, 7850, check voltage between terminal 17 and G. Line

voltage should be present. If not, the Pre-Ignition Interlock

switches could be defective and need replacing.

If the fault persists, replace the relay module.

Check wiring; correct any errors.

Reset and sequence the relay module.

If fault persists, replace the relay module.

Reset and sequence the relay module. If fault repeats, replace

relay module, but be sure to test for excessive loads on appro-

priate terminals described by fault code.

If fault does not repeat on next cycle, check for electrical

noise being coupled into the relay module through the loads

on appropriate terminals described by the fault code.

If fault persists, replace the relay module.

WARNING

Explosion Hazard.

Can cause explosion, serious injury or death.

Remove system power, turn off fuel supply.

Check for wiring errors that could provide power to terminals

described by the fault. Correct any errors.

Re-power system; reset and sequence the relay module.

If fault persists, replace the relay module.

When fault is corrected, turn on fuel supply.

320011007 22

Page 23

Fault Code System Failure

Fault 45 *Low Fire Sw. Off*

Fault 46 *Flame Amp Type*

Fault 47 *Jumpers Changed*

Low Fire Interlock switch failure to close or stay closed.

This fault indicates: a. The Flame Failure Response Time (FFRT) or TYPE input from the ampliﬁer changed while the device was powered; or b. A standard ampliﬁer was used in a pilot valve application; or c. A three-second FFRT Ampliﬁer was used with the relight option on the RM7890 Relay Module.

The conﬁguration jumpers differ from the sample taken at startup.

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Check wiring; correct any errors.

Reset and sequence the relay module.

Use either the manual motor position to drive the motor to

the Low Fire position, or use the Run/Test Switch option, if

available. Sequence to Run, drive to Low Fire and place in the

Test position. Adjust the Low Fire Switch while in this state to

make sure it is closing properly.

While in Run, drive to Low Fire state, measure the voltage

between terminal 18 and G (ground). Line voltage should be

present. If not, the switch adjustment is incorrect and/or the

switch is defective and needs replacement.

If steps 1 through 4 are correct and the fault still persists,

replace the relay module.

Remove power to the device.

Reseat the ﬂame ampliﬁer and reset and sequence the relay

module.

For EC/RM7890 only; make sure that Jumper JR2 is com-

pletely clipped if a three-second FFRT ampliﬁer is being used.

If Jumper JR2 is intact (relight option is selected), use 0.8

second FFRT ampliﬁer.

For RM7838B only; make sure that a Shutter Check Flame

Ampliﬁer is being used with the Pilot Valve Hold option select-

ed.

Inspect the jumper connections. Make sure that clipped

jumpers are completely removed.

Reset and sequence the relay module.

If fault persists, replace the relay module.

WARNING

Explosion Hazard.

Can cause explosion, serious injury or death.

Remove system power, turn off fuel supply.

Check wiring; correct any errors.

Inspect the V2S Fuel Valve and its connections. Make sure the

switch is working correctly and is not jumpered or welded.

Reset and sequence the relay module.

If fault persists, replace the relay module.

Fault 48 *Delayed MV On*

V2S valve terminal, used as a delayed main valve, was on when it should be off.

WARNING

Fault 49 *Manual Open Switch On.*

23 320011007

The manual open switch was on when it should be off.

Remove system power, turn off fuel supply.

Check wiring; correct any errors.

Inspect the Manual-Open Switch and its connections. Make

sure the switch is working correctly and is not jumpered or

welded.

Reset and sequence the relay module.

If fault persists, replace the relay module.

Page 24

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code System Failure

The sequence logic detected a combination

Fault 50 *Jumpers Wrong*

of jumpers that is illegal for the sequence e.g., if it is correct to clip Jumper JR1 or Jumper JR2, but not both, this fault would be used

Inspect the jumpers and refer to the installation instructions

for compatible jumper conﬁgurations.

Make sure that clipped jumpers are completely removed.

Reset and sequence the relay module.

If fault persists, replace the relay module.

when both are clipped (RM7888 only).

Make sure that ﬂame detector and ﬂame ampliﬁer are com-

patible.

Remove the ﬂame ampliﬁer and inspect the connections.

Reset the ﬂame ampliﬁer. Reset and sequence the relay

module. Fault 51 *Flame Too Strong*

Flame signal value is too high to be valid.

Check the ﬂame detector sighting position, reset and cycle.

Verify that no ignition noise is present in the F lead due to

wire routing.

Measure the ﬂame strength. Verify it meets speciﬁcations.

If not, refer to the ﬂame ampliﬁer and/or ﬂame detector

checkout procedures. If the code reappears, replace the ﬂame

ampliﬁer and/or the ﬂame detector.

If the fault persists, replace the relay module.

Fault 52 *Internal fault*

Pilot Valve 2 (terminal

21) was off when it should be on.

Inspect terminal 21 and connections.

Make sure that the valve is operating properly.

Reset and sequence the relay module. If the fault persists,

replace the relay module.

Check wiring; correct any errors.

Inspect the Lockout Switch to make sure it is working prop-

erly. Fault 53 *Lockout Switch*

Lockout Input fault (EC/RM7810, 7820, 7830, 7850 only).

Reset and sequence the relay module.

During STANDBY or PREPURGE, measure the voltage be-

tween

terminal 20 and G (ground). Supply voltage should be pres-

ent. If not, the lockout switch is defective and needs replacing.

If the fault persists, replace the relay module.

Check wiring; correct any errors.

Inspect the Combustion Pressure Switch to make sure it is

working correctly.

Fault 54 *Combustion Pressure*

Combustion pressure switch fault (Fulton pulse only).

Reset and sequence the relay module.

During STANDBY or PREPURGE, measure the voltage be-

tween

terminal 20 and G (ground). Supply voltage should be pres-

ent. If not, the Combustion Pressure Switch is defective and

needs replacing.

If the fault persists, replace the relay module.

Check wiring; correct any errors.

Fault 55 *Purge Fan Sw. On*

Purge fan switch is on when it should be off (Fulton pulse only).

Inspect the Purge Fan Switch terminal 18 and its connec-

tions. Make sure the switch is working correctly and is not

jumpered or welded.

Reset and sequence the relay module.

If the fault persists, replace the relay module.

Check wiring; correct any errors.

Inspect the Block Intake Switch and make sure it is working

Fault 56 *Block Intake*

Block intake fault (Fulton pulse only).

properly.

Reset and sequence the relay module.

During PREPURGE, measure the voltage between terminal 7

and G (ground). Supply voltage should be present. If not, the

Block Intake Switch is defective and needs replacing.

If the fault persists, replace the relay module.

320011007 24

Page 25

Fault Code System Failure

Fault 57 *Purge Fan Sw. Off*

Purge Fan Switch is off when it should be on (Fulton pulse only).

Flame is indicated Fault 58 *Combustion pressure/ Flame*

by both the combus-

tion pressure and the

ﬂame ampliﬁer when

it should be off (Fulton

pulse only). Faults 59–66 *Call

Unused faults. Service*

L1 and L2 miswired/exFault 67 *AC Phase*

changed (EC/RM7810,

7820, 7830, 7850

only).

Fault 68 *Pre-Ignition ILK*

Fault 69–70 *Call Service*

Fault 71 *Dynamic LFS*

Fault 71 *Limits Complete*

Fault 72 *Dynamic HFS*

Fault 72 *Spec. Func.2*

Fault 73 *Spec. Func.3*

Fault 74 *Unused*

Pre-Ignition Interlock

fault.

Unused faults. -

Low Fire Switch closed,

High Fire Switch must

be open (EC/RM7850

only).

Limit input (terminal 7)

is off when it should be

on (RM7888 only).

High Fire Switch closed;

Low Fire Switch must

be open (EC/RM7850

only).

Special Function 2 In-

put (terminal 17) is off

when it should be on.

Special Function 3 In-

put (terminal 19) is off

when it should be on.

Unused fault. -

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Inspect the Prepurge Fan Switch terminal 18 and the connections. Make sure the switch is working properly. Reset and sequence the relay module. If the fault persists, replace the relay module.

Check L1 and L2 for proper line phasing.

Check wiring; correct any errors. Inspect the Pre-Ignition Interlock switches and make sure they work properly. Check fuel valve operation. Valve must close within ﬁve seconds. Reset and sequence the relay module. During STANDBY or PREPURGE, measure the voltage between terminal 17 and G (ground). Supply voltage should be present. If not, the Pre-ignition Interlock switches are defective and need replacing. If the fault persists, replace the relay module.

Check ﬁring rate position switches (usually in Modutrol® Motor) for proper operation. Check wiring, correct any errors. Reset and sequence the relay module. If the fault persists, replace the relay module Check limits to make sure they are satisﬁed after resetting. Check electrical connections to terminal 7 of wiring subbase. Reset relay module. If the fault persists, replace the relay module. Check ﬁring rate position switches (usually in Modutrol® Motor) for proper operation. Check wiring, correct any errors. Reset and sequence the relay module. If the fault persists, replace the relay module. Check operation of Special Function 2 of PLC. Check electrical connection to terminal 17 of wiring subbase and conﬁrm presence of supply power when Special Function 2 is activated. Reset relay module. If the fault persists, replace the relay module. Check operation of Special Function 3 of PLC. Check electrical connection to terminal 19 of wiring subbase and conﬁrm presence of supply power when Special Function 3 is activated. Reset relay module. If the fault persists, replace the relay module

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code System Failure

Fault 75 *Flame Proven Feedback*

Faults 76–87 *Accessory Fault*

Fault 88 *Accessory Fault*

Fault 89 *Accessory Fault* Fault 90 *Accessory Fault* Faults 91-93 *Accessory Fault* Fault 94 *Call Service*

Fault 95 *Relay module self-test failure*

Fault 96 *Flame circuit diagnostic failure*

Fault 97 *Over temperature*

Fault 98 *Flame circuit diagnostic failure*

Fault 99 *Relay module self-test failure*

Fault 100 *EEPROM not initialized*

Fault 101 *Incompatible subbase* Fault 102 *Valve proving (VP) EEPROM error*

Flame Indication

Feedback (terminal 21)

either on when it should

be off or off when it

should be on.

Lockout requested by

ControlBus module.

T17 powered without

Valve Proving feature

setup.

T6 and T17 powered at

the same time.

T7 opens on RM7890

with VPS Feature.

Lockout requested by

ControlBus module.

Call service. -

Relay Module self-test

failure.

Flame circuit diagnos-

tic failure.

Device ambient tem-

perature limit exceeded.

Flame circuit diagnos-

tic failure.

Relay Module self-test

failure.

Relay Module EEPROM

is not initialized or is

corrupted.

Installed subbase is

incompatible with this

relay module.

Valve proving conﬁg-

uration in EEPROM

is not initialized or is

corrupted.

Remove wire to terminal 21 and reset relay module. If the fault persists, replace relay module. Reconnect wire to terminal 21. If the fault returns, verify wiring.

Follow Valve Proving Selection Setup in Appendix B on selected Relay Module. If No Valve Proving (NEVER) is required, connect controller (Demand) to terminal 6.

Correct wiring error

Determine what interrupted terminal 7. Correct any wiring issues. Reset Relay Module.

Reset and sequence the relay module. If the fault reappears, remove power from the relay module and reapply the power; reset and sequence the relay module. If the fault persists, replace the relay module. Reset and sequence the relay module. If the fault reappears, remove power from the relay module and reapply the power; reset and sequence the relay module. If the fault persists, replace the relay module. Check ambient temperature and reduce to within speciﬁcations. If the fault persists, replace the relay module. Reset and sequence the relay module. If the fault reappears, remove power from the relay module and reapply the power; reset and sequence the relay module. If the fault persists, replace the relay module

Enter Setup and re-commission Valve proving settings. If the fault persists, replace the relay module.

320011007 26

Page 27

Fault Code System Failure

Fault 103 *Postpurge EEPROM error*

Postpurge conﬁgu-

ration in EEPROM

is not initialized or is

corrupted. Fault 104 *Valve proving (VP) conﬁgura-

Invalid valve proving

conﬁguration detected.

tion error* Fault 105 *Call Service*

Relay Module self-test

failure. Fault 106 *Relay module self-test

Relay Module self-test

failure. failure*

Fault 107 *Call Service*

Fault 108 *Unused*

Fault 109 *Negative AC cycle detected*

Relay Module ﬂame

signal crosscheck

failure.

Unused fault -

Negative cycle test

failed, earth ground

absent or line voltage

phasing improper.

Fault 110 *Locked jumpers do not match conﬁgura-

The conﬁguration

jumpers differ from

stored values.

tion*

Fault 111 *Bad jumper reading*

Fault 112–126 *Call Service*

Fault 127 *Call Service*

Table 5. Hold and Fault Message Summary.

Relay Module conﬁg-

uration jumper test

failure.

Relay Module self-test

failure.

Safety relay feedback

circuit was in an im-

proper state.

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Enter Setup and re-commission Postpurge settings. If the fault persists, replace the relay module.

Enter Setup and re-commission Valve proving settings. If the fault persists, replace the relay module.

Make sure a good earth ground connection exists at the installation site and all earth ground connections are complete and correct. Make sure the relay module and all loads operate at the same line voltage phase. Reset and sequence the relay module. If the fault persists, replace the relay module. Inspect the jumper connections. Make sure they match the original selection and clipped jumpers are completely removed. Reset and sequence the relay module. If the fault persists, replace the relay module. Conﬁguration jumpers must be selected prior to 200 hours of operation. If conﬁguration jumpers are changed after 200 hours of operation, lockout 110 occurs. Relay module cannot be reset and must be replaced. Inspect the jumper connections. Make sure they match the original selection and clipped jumpers are completely removed. Reset and sequence the relay module. If the fault persists, replace the relay module.

Reset and sequence the relay module. If the fault persists, replace the relay module

Reset and sequence the relay module. If the fault persists, replace the relay module.

27 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Expanded Annunciator Messages

If an Expanded Annunciator is wired to the limit control and interlock control strings, and connected to the 7800 SERIES Relay Module, additional hold messages, fault messages or code numbers enhance the original hold messages, fault messages or code numbers. See the Expanded Annunciator speciﬁcation, form 65-0101, for detailed information. The message demonstrates which device opened ﬁrst in a monitored string of limits or interlocks.

1/8 IN. DIA. (2) (3.175 MM)

M5082B

Fig. 28. KDM ﬂush mounting outline.

APPENDIX A: DISPLAY SETUP

The S7800A1142 display module permits the following features to be conﬁgured:

• Call for Service custom lockout message

• Modbus interface – Enable – Address – Baud rate – Parity – U32 register Endian order

• Annunciator terminal assignment

• Custom annunciator terminal messages

• Sleep time

• Inactivity time

• Selected status message (for Home page)

• Backlight intensity level

• Language

• Heater mode

The current settings of these parameters can be viewed at any time, but to change their setting values an authorized login with the display password is required.

NOTE: The factory default password is set to '000' and should be changed when

commissioning the display. See Fig. 30 on how to reset the password.

When the user attempts to change a parameter setting (requests navigation to the edit page for the parameter) and the user is not currently logged in, a warning is displayed indicating that a login is required (see Fig. 29).

320011007 28

Page 29

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fig. 29. Login required

If the user is authorized to change conﬁguration settings, knows the display password, and wishes to continue with the parameter change, the user presses the OK button with the input focus on the “Yes” selection. If the user isn’t authorized to change the parameter or doesn’t want to change it, the user tabs to the “No” selection with the right arrow or left arrow button and presses the OK button. Control returns back to the previous page if the user elects to not make the parameter change. If the user elects to change the parameter setting, the user is asked to login (see Fig. 30).

Fig. 30. Display login

The 3-digit display password is entered by scrolling the digits and tabbing to the “Yes” command and pressing the OK button to login. A successful login transitions to the conﬁguration page. An unsuccessful login (wrong password) displays an “INVALID PASSWORD” message (see Fig. 31). If the user elects to cancel the login, tabbing to the “No” command and pressing the OK button returns control to the previous page.

Fig. 31. Invalid login

A successful login is active for all pages navigated to while staying within the conﬁguration pages. When the display module returns back to the Home or Lockout page the login status is negated and future parameter changes will require the user to login again.

Navigating to these display setup functions starts from the “Display menu” selection on the Home page (see Fig. 32). The Display Menu page allows the user to scroll to the function desired.

Fig. 32. Navigate to Display Menu

Fig. 33. Display Menu

29 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

LINES

Call for Service Setup

Setup of the Call for Service lockout message feature is accessed from the Display Menu (see the Fig. 34). The feature permits a custom message to be displayed in place of the standard lockout message. The custom message can be up to 8 lines of 20 characters per line. The ﬁrst line is not editable and matches with the ﬁrst line of the standard lockout message. For a full list of available text and characters, refer to table 8.

First line of call for service message matches standard lockout message so that the lockout detail command can be positioned on the line.

FIRST TW LINES OF MESSAGE

Fig. 34. Call for Service setup menu

The lines of the message are displayed on the menu, and if more than 2 lines are in the message, the last lines can be seen by scrolling down the page (see Fig. 35).

LAST

FIRST TWO LINES OF MESSAGE

Fig. 35. Call for Service message

The up and down arrow buttons are used to scroll through the menu lines. A “Next page” symbol is displayed on the menu line if it is selectable for an action (all menu lines except for the message itself). When a selectable menu line has focus (is highlighted) and the right arrow or OK button is pressed, the following actions occur:

• “Display option” – enable/disable this feature

• “Test message” – view message in operation

• “Edit message” – edit the message

The user must be logged in before navigation to the “Display option” and “Edit message” pages occur. If the user is not logged in, the user is asked to log in. The left arrow button is used to exit this page and return back to the Display Menu page. The Home button exits this page and goes to the Home page.

The Call for Service feature is turned on (enabled) or off (disabled) by editing the “Display option” (see next ﬁgure). The up and down arrow buttons are used to scroll to the desired setting: “Enabled” or “Disabled”. To commit the change the right arrow button is used to tab to the “Yes” command and the OK button is pressed to save the selected setting. If the setting should not be saved, scroll down to the “No” command and press the OK button. In both cases control returns back to the Call for Service menu.

FIVE

Fig. 36. Enable/disable Call for Service

Changing the contents of the message is initiated by selecting the “Edit message” line (see Fig. 37). Since the ﬁrst line of the message is ﬁxed, i.e., not editable, the input focus is positioned on the ﬁrst character position of the second line. Up to 20 characters can be entered for each line. Up to 7 lines (excluding the ﬁrst line) can be edited, lines 2 through 8. Lines at the bottom that are blank are not displayed in the message. The current message text is displayed when the page is initially entered.

320011007 30

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

EDIT LINE

COMMANDS

Fig. 37. Edit Call for Service message

The title displays which line of the message currently is being edited in addition to the line number displayed on the left side of the edit line. Up to 5 lines of the message is displayed in the page main body area. The line being edited is always positioned in the center of the main body with the text characters underlined and is called the “edit line”. When the input focus is on the “edit line” the message text can be edited. The up and down arrow buttons are used to scroll through the alphabet to choose the character for each text character. The up and down arrow buttons can be pressed and held to repeatedly scroll the characters. The right and left arrow buttons are used to change the input focus to each character position in the line.

The navigation bar at the bottom of the edit page has commands that are selectable for the following functions (see Fig. 38):

• “Prev line” – go up to previous message line (line above)

• “OK” – accept and save message text changes (exit this page)

• “Cancel” – do not save any message text changes (exit this page)

• “Next line” – go to next message line (line below)

EDIT

Fig. 38. Call for Service edit commands

The edit commands are accessed from the edit line from either the ﬁrst or last character positions. When the input focus is on the ﬁrst character position of the edit line a left arrow button action navigates the input focus down to the navigation bar commands. When the input focus is on the last character position in the edit line a right arrow button action also moves down to the navigation bar.

The right and left arrow buttons are used to tab between the edit commands on the navigation bar. Pressing the OK button causes the highlighted command to be executed. When the “OK” or “Cancel” command is executed the edit page is exited and control returns back to the Call for Service menu. Pressing the up or down arrow button from the command line navigates the input focus back to the edit text line.

The message can be tested to see what it would look like when a lockout occurs by selecting the “Test message” line (see Fig. 39). The message continuously displays until the user presses any button to stop. After a button is pressed and released the simulation is stopped and control returns back to the Call for Service menu.

Fig. 39. Call for Service test message

The lockout fault code is not displayed in the ﬁrst line, but instead a message to press any button to stop the test is given.

Modbus Setup

Modbus setup is accessed from the Display Menu (see Fig. 40). The current settings of the following Modbus parameters are displayed:

31 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

• Interface enable/disable option

• Slave address

• Baud rate (speed)

• Parity

• Endian order (for 32-bit registers)

Fig. 40. Modbus setup menu

The up and down arrow buttons are used to scroll down to the line of the parameter to edit. Pressing the right arrow or OK button navigates to the parameter edit page (unless a display login is required ﬁrst). Pressing the left arrow button exits this page and returns back to the Display menu.

The Modbus interface can be enabled or disabled by selecting the “Interface” line and pressing the right arrow or OK button (see Fig. 41). When the interface is enabled the RS-485 pins of the edge connector (terminals 1-3) accepts Modbus communication requests as a Modbus slave. When the interface is disabled the RS-485 pins provide a communication bus for other 7800 SERIES accessories (Refer to page 5 Wiring). The current enable setting is displayed initially.

Fig. 41. Modbus interface setup

The up and down arrow buttons are used to scroll between the two options: “Enabled” and “Disabled”. To commit the change the right arrow button is used to tab to the “Yes” command and the OK button is pressed to save the selected setting. If the setting should not be saved, scroll down to the “No” command and press the OK button. In both cases control returns back to the Modbus setup menu.

The Modbus slave address can be edited by selecting the “Address” line and pressing the right arrow or OK button (see Fig. 42). Only Modbus messages directed to this address are acknowledged and messages sent to other addresses are ignored by this display module. An address range of 1-255 can be conﬁgured. The current address setting is displayed when the page is initially entered.

Fig. 42. Modbus address setup

The up and down arrow buttons are used to increment/decrement the slave address digits on the edit line. The right and left arrow buttons are used to tab between the address digit positions and the save commands on the right, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the address is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed address, the “No” command is selected and the OK button is pressed. In both save command cases the control returns back to the Modbus setup menu.

The Modbus baud rate (speed) can be edited by selecting the “Rate” line and pressing the right arrow or OK button (see Fig. 43). The baud rate can be set to one of the following speeds:

320011007 32

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

• 4800 bps

• 9600 bps

• 19200 bps

• 38400 bps

• 57600 bps

• 115200 bps

The current baud rate setting is displayed when the page is initially entered.

Fig. 43. Modbus baud rate setup

The up and down arrow buttons are used to scroll through the speed choices on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the speed is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed speed, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Modbus setup menu.

The Modbus parity can be edited by selecting the “Parity” line and pressing the right arrow or OK button (see Fig. 44). The Modbus interface can be conﬁgured for one of the following parity types:

• Even parity

• Odd parity

• No parity (None)

The current parity setting is displayed initially when the page is entered.

Fig. 44. Modbus parity setup

The up and down arrow buttons are used to scroll through the parity choices on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the parity choice is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed parity setting, the “No” command is selected and the OK button is pressed. In both save command cases the control returns back to the Modbus setup menu.

The Endian data order for 32-bit registers in the Modbus interface (designated by U32 in Format column of Table 16) can be speciﬁed by selecting the “Endian order” line and pressing the right arrow or OK button (see Fig. 45).

Fig. 45. Modbus Endian order setup

The data order can be set to “Big-Endian” or “Little-Endian”. A Big-Endian setting is used when the Modbus response provides the 32-bit data in the following order:

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TERMINAL

TION

OMMAND

TION

MOST SIGNIFICANT BYTE

LEAST SIGNIFICANT BYTE

A Little-Endian setting is used when the Modbus response provides the 32-bit data in the following order:

LEAST SIGNIFICANT BYTE

MOST SIGNIFICANT BYTE

Default setting is Big-Endian, but the current setting is displayed when the page is initially entered.

The up and down arrow buttons are used to scroll between the two options on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the order choice is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed order setting, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Modbus setup menu.

Annunciator Setup

Annunciator setup is accessed from the Display Menu (see Fig. 46). This setup permits the customization of the annunciator interface to match with the system usage of the annunciator. Two selections are possible from this menu:

• Terminal assignment

• Custom messages

Fig. 46. Annunciator setup

Terminal assignment allows the user to name the annunciator terminals to match with their system interlock purpose. These assignments can be edited by selecting the “Terminal assignment” line and pressing the right arrow or OK button (see Fig. 47). Each terminal, 4-22, can be named from one of the messages in Table 7. When the page is initially displayed the current terminal assignments are displayed.

SELEC LINE

NAME SELEC LINE

C LINE

Fig. 47. Annunciator terminal assignment setup

Note that terminal 19 has two different names, one for gas and one for oil. The page displays next to the terminal number which one is referenced (see Fig. 48).

GAS OR OIL

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fig. 48. Annunciator terminal T19

The up and down arrow buttons are used to scroll through the terminal numbers when the input focus is on the terminal selection line. As the terminal number changes the current name assigned for the terminal is displayed. The right and left arrow buttons on this line are used to navigate to the name selection line (see Fig. 49).

LEFT

ARROW

RIGHT ARROW

Fig. 49. Annunciator terminal name selection line

On the name selection line the up and down arrows are used to scroll through the names that are listed in Table 7. When the desired name for the terminal is displayed the name can be committed by navigating to the “Save” command on the command line. The right arrow button tabs to the “Exit” command from the name selection line (see Fig. 50) while the left arrow button tabs up to the terminal selection line.

LEFT ARROW

RIGHT ARROW

Fig. 50. Tab from annunciator terminal name selection line

On the command line the right and left arrow buttons tab between the “Save” and “Exit” commands. Pressing the OK button executes the command that is highlighted. The “Save” command saves the currently displayed terminal assignment to permanent storage in the display module. The “Exit” command leaves this page and returns back to the Annunciator setup menu. Pressing the up arrow button on the command line navigates up to the name selection line, and pressing the down arrow button “wraps around” to the terminal selection line (see Fig. 51).

UP ARROW

DOWN ARROW

Fig. 51. Tab from annunciator terminal command line

Custom annunciator messages allow the user to deﬁne names that are different from the ﬁxed names listed in Table 7. Up to 20 custom messages can be used with each message allowing for 20 characters. These messages can be edited by selecting the “Custom messages” line and pressing the right arrow or OK button (see Fig. 52). Each custom message, 1-20, initially displays the current text that the message contains. For a full list of available text and characters, refer to table 8.

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OMMAND

The up and down arrow buttons are used to scroll through the message numbers, 1-20, on the message number line. As the message number changes the message text for the message number is displayed. The right and left arrow buttons are used to navigate to the text edit line.

MESSAGE NUMBER LINE

TEXT EDIT LINE

C LINE

Fig. 52. Annunciator custom messages setup

On the text edit line (see Fig. 53) the up and down arrow buttons are used to scroll through the alphabet characters in the message text. The up and down arrow buttons can be pressed and held to repeatedly scroll the characters.

SCROLL THROUGH CHARACTERS

Fig. 53. Scroll annunciator custom message characters

The right and left arrow buttons move the input focus between the character positions in the text. When the left arrow button is pressed and the input focus is in the ﬁrst character position of the text, however, the input focus moves to the “Save” command in the command line (see Fig. 54). When the right arrow button is pressed and the input focus is in the last character position of the text, the input focus moves to the “Exit” command in the command line.

LEFT ARROW

RIGHT ARROW

Fig. 54. Tab to annunciator custom message command line

On the command line the left and right arrow buttons are used to tab between the “Save” and “Exit” commands. When the OK button is pressed and the “Save” command is highlighted, the displayed text is saved for the custom message number in permanent storage of the display module. When the OK button is pressed and the “Exit” command is highlighted, this page is exited and control returns back to the Annunciator setup menu. The up arrow button is used on the command line to navigate back up to the text edit line, and the down arrow button is used to “wrap round” to the message number line (see Fig.

55).

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

UP ARROW

DOWN ARROW

Fig. 55. Tab from annunciator custom message command line

Sleep Time

The display sleep time determines whether the LCD in the display module should go blank or not after a period of time when no user activity occurs with the device. The display sleep time can be set to one of the following settings:

• Never (don’t ever go to sleep)

• 5 seconds

• 10 seconds

• 30 seconds

• 1 minute

• 5 minutes

• 1 hour

Sleep time setup is accessed from the Display Setup Menu (see Fig. 56). The current parameter setting is displayed when the page is initially entered.

Fig. 56. Display sleep time setup

The up and down arrow buttons are used to scroll through the time choices on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the time is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed time, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Display setup menu.

Inactivity Time

The display inactivity time determines whether any non-status (conﬁguration, etc.) page should be automatically exited after a period of time of no user activity on the display module (no button presses). If this parameter is enabled, any page other than the Home, Lockout, and diagnostics pages are automatically exited if the page is idle for the time speciﬁed by this parameter. The intent of this parameter is to not leave the display on a conﬁguration page after the user has left the display module vicinity to prevent any unauthorized changes to a parameter setting. The following settings can be selected for this parameter:

• None (do not automatically exit any page)

• 30 seconds

• 1 minute

• 5 minutes

• 30 minutes

• 1 hour

Inactivity time setup is accessed from the Display Setup Menu (see Fig. 57). The current parameter setting is displayed when the page is initially entered.

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Fig. 57. Display inactivity time setup

Selected Status Message

The selected status message feature permits the Home page to be customized to display a status item on it that is of interest for the installation. The selected status item is displayed on a line below the burner control sequence state on the Home page (above “Flame signal” line). This message can be chosen from the list contained in the next table.

Description

Flame signal strength.

Total number of equipment operating cycles. Total number of equipment operating hours. Number that identiﬁes the reason for lockout.

Cycle when fault occurred.

Run hour when fault occurred.

Indicates cause of lockout. Indicates where in the sequence when the lockout occurred. Indicates time in the sequence when the lockout occurred. Device type number. Position of Run/ Test switch.

Burner control T6 terminal I/O state.

Burner control T7 terminal I/O state. Burner control T8 terminal I/O state.

Selectable Mes-

sage/Display

Flame signal

Possible States/

Range (Terminals)

0 - 5.0 Vdc Flame Amp (+ and - (Com))

0 - 99,999

Total cycles

(250,000; 999,999

cycles 0 - 99,999

Total hours

(250,000; 999,999

hours

FH fault code 0-127

0 - 99,999

FH cycle

(250,000; 999,999

cycles 0 - 99,999

FH hours

(250,000; 999,999

hours

FH message

FH seq state

FH seq time

Device type

RM78XXX, R7140, or EC78XXX

Run/Test switch RUN or TEST

T6 terminal

T7 terminal

T8 terminal

ON or OFF

Comments

Flame relay pull-in and dropout value

1.25 Vdc.

Cycle will be updated each

)

time main valve is energized.

Hour will be updated each

)

time main valve output is energized for 60 minutes.

Most recent fault in fault history.

Most recent fault in fault

)

history.

Most recent fault in fault

)

history.

Most recent fault in fault history.

Indicates if 7800 SERIES is in RUN or TEST mode.

Indicates if input is on or off, energized or de-energized.

Indicates if input is on or off, energized or de-energized. Indicates if input is on or off, energized or de-energized.

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Page 39

Description

Burner control T9 terminal I/O state.

Burner control T10 terminal I/O state.

Burner control T16 terminal I/O state.

Burner control T17 terminal I/O state.

Burner control T18 terminal I/O state.

Burner control T19 terminal I/O state.

Burner control T20 terminal I/O state.

Burner control T21 terminal I/O state.

Pilot Flame Establishing Period (PFEP).

First Safety Time (for RM/EC7850).

Jumper 2

Jumper 3

Flame amp type

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Selectable Mes-

sage/Display

T9 terminal

T10 terminal

T16 terminal

T17 terminal

T18 terminal

T19 terminal

T20 terminal

T21 terminal

Possible States/

Range (Terminals)

ON or OFF

Jumper 1 INTACT/CLIPPED

INTACT/CLIPPED

Pilot Valve. INTACT/CLIPPED

Main Trial Time (for RM/EC7850).

Start-up Airﬂow Switch (AFS) check.

Deﬁnes type of ampliﬁer installed.

INTACT/CLIPPED

INTACT (Disabled) / CLIPPED (Enabled)

STANDARD/AMPCHECK/SHUTTER

Comments

Indicates if input is on or off, energized or de-energized.

Display shows state of PFEP jumper. If jumper is intact, 7800 SERIES was 10 second PFEP. If jumper is clipped, 7800 SERIES has 4 second PFEP. Display shows state of First Safety Time (EC7850) jumper. If jumper is intact, EC7850 has 5 second First Safety Time. If jumper is clipped, the EC7850 has 3 second First Safety Time. Display shows state of PilotValve (terminal no. 21). If jumper is intact, RM7800G has Intermittent Pilot Valve. If jumper is clipped, RM7800G has 15 or 30 second Interrupted Pilot Valve. Display shows state of Main Trial Time (EC7850)Valve (terminal no. 21). If jumper is intact, EC7850 has 5 second Main Trial Time. If jumper is clipped, EC7850 has 3 second Main Trial Time. Display shows state of Startup AFS check jumper. If jumper is clipped, RM7800 AFS check is enabled and if jumper is intact, AFS check is disabled. Display shows type of ﬂame detection system installed (i.e., as STANDARD, AMPCHECK/AMPLI-CHECK™ and SHUTTER/ Dynamic Self-Checking).

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Description

Flame response

Purge time

Manu code

Selectable Mes-

sage/Display

Ampliﬁer Flame Failure Response Time (FFRT) in seconds. Timing value of purge card.

Postpurge time (enhanced models only).

Possible States/

Range (Terminals)

0.8 second, 1 second, 2 seconds, or 3 seconds

mm:ss Two seconds to 30 minutes.

mm:ss Zero seconds to 63 minutes.

Software revision

SW revision

of burner control module.

Annun status

T4 Proof of closure

T5 Valve closure

T6 Op control

T7 Aux Limit 1

T8 Aux Limit 2

T9 LWCO

T10 High limit

T11 Aux Limit 3

T12 Oil select

T13 High oil pres-

sure T14 Low oil pres-

sure

T15 High oil temp

T16 Low oil temp

T17 Gas select

T18 High gas

pressure T19 Low gas pres-

sure

T19 Atomizing

T20 Airﬂow

T21 Aux ILK 4

T22 Aux ILK 5

Annun fault code

Annun SW revision

a European approved controls b Pre-ignition Interlock terminal 17 or 20 is model dependent. c Valve Proving device or RM7897

320011007 40

Current annunciator status. Annunciator Proof of

closure. Annunciator Valve

closure. Annunciator Operat-

ing control. Annunciator Auxiliary

Limit #1. Annunciator Auxiliary

Limit #2. Annunciator Low Water Cutoff. Annunciator High

limit. Annunciator Auxiliary

Limit #3. Annunciator Oil se-

lection. Annunciator High oil pressure. Annunciator Low oil pressure.

Annunciator High oil

temperature.

Annunciator Low oil

temperature. Annunciator Gas

selection. Annunciator High gas

pressure. Annunciator Low gas

pressure. Annunciator Atomiz-

ing switch. Annunciator Airﬂow switch. Annunciator Auxiliary

ILK #4. Annunciator Auxiliary

ILK #5. Annunciator fault code. Annunciator software revision.

ON or OFF

Comments

Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off.

Indicates if interlock is on or off.

Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off. Indicates if interlock is on or off.

Page 41

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

CHOICES

d Display values are as follows:

• n represents a numbered value

• T represents a terminal number

• x represents the sufﬁx letter of the Relay module eBurner control terminal name is displayed

f Assigned annunciator terminal name is displayed.

Table 6. Selectable Messages.

Editing of this feature is accessed by selecting “Selected status” from the Display Setup menu (see Fig.

58). The current parameter setting is displayed when the page is initially entered.

Fig. 58. Selected status message setup

The up and down arrow buttons are used to scroll through the message choices on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the message is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed message choice, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Display setup menu.

Backlight Intensity Level

The backlight intensity level speciﬁes the intensity that the LCD backlight should have at this installation location. The following intensity levels can be speciﬁed:

• 5 = Brightest

• 4 = Brighter

• 3 = Normal (no adjustment) – default

• 2 = Slightly darker

• 1 = Darker

• 0 = Darkest

Access to setup this parameter is obtained from the Display setup menu (see Fig. 59). Current adjustment level setting is displayed when the page is initially entered.

Fig. 59. Backlight intensity level setup

The up and down arrow buttons are used to scroll through the adjustment levels on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the level is set to the desired value the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed level, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Display setup menu.

Language

The language to use for the display module can be selected from one of the following:

• English (default)

• Spanish

• French

Setup of the language to use is accessed from the Display setup menu (see Fig. 60). The line for the current language setting is highlighted on the page.

SCROLL

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Fig. 60. Language setup

The up and down arrow buttons are used to scroll between the possible selections and highlight the one the user wants. The left arrow button is used to exit this page and not make any language change (page is exited and control returns back to Display setup menu). The right arrow or OK button is pressed to set the language to the highlighted line. A ﬁnal conﬁrmation is asked (see Fig. 61) before committing to the new language setting.

NEW LANGUAGE

CONFIRMATION LINE

Fig. 61. Language change conﬁrmation

The right and left arrow buttons are used on the conﬁrmation line to tab between “Yes” and “No” options. Pressing the OK button executes the highlighted option. When “Yes” is executed the display module switches to the new language. When “No” is executed the language change is canceled and the language remains as it is. In both cases control returns back to the Language setup menu.

Heater Mode

Display has a heater function used to improve legibility and refresh rates in low temperature situations. The display heater feature is available for all models except for those listed on page 43 Models that do not use the Heater Function.

Heater panel operation can be set by the user to one of the following settings:

• Automatic (default) – heater turns on when internal temperature reaches 50 °F (10 °C) or

below

• On – heater is on always

• Off – heater is off always

Heater mode setup is accessed from the Display setup menu (see Fig. 62). The current setting is displayed when the page is initially entered.

Fig. 62. Heater mode setup

The up and down arrow buttons are used to scroll through the mode settings on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the mode is set to the desired value the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the displayed mode, the “No” command is selected and the OK button is pressed. In both save command cases control returns back to the Display setup menu.

Display Password

The display module password can be edited to a new 3-digit setting. Password setup is accessed from the Display setup menu (see Fig. 63).

Fig. 63. Display password setup

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Models that do not use the Heater Function

The heater function is not available for these models that have a software revision level starting less than 5. The heater function will not work regardless of the setting in the Heater Mode setup. Operating Temperature from - 32 °F to 140 °F (0 °C to 60 °C).

• RM7830A1003 • EC7850A1122 • EC7865A1005 • EC7850A1007

• RM7830A1029 • RM7890A1064 • EC7850A1148 • EC7850A1015

• RM7850A1001 • RM7838C1020 • RM7850A1035 • EC7850A1031

• RM7850A1019 • RM7890B1055 • EC7890A1037 • EC7850A1049

• EC7820A1026 • RM7830A1011 • EC7810A1001 • EC7850A1056

• EC7830A1033 • RM7850A1027 • EC7810A1019 • EC7850A1106

• EC7830A1058 • EC7810A1027 • EC7820A1000 • EC7850A1114

• EC7830A1066 • EC7810A1035 • EC7820A1018

• EC7850A1072 • EC7820A1034 • EC7830A1009

• EC7850A1080 • EC7830A1041 • EC7830A1017

• EC7850A1098 • EC7850A1064 • EC7830A1025

APPENDIX B: BURNER CONTROL COMMISSIONING

The S7800 display module is required to commission the following features in 7800 SERIES burner control modules that support them:

• Valve proving system

• Post purge timing

Not all 7800 modules support these features. Some models may support both features while some may only support one or the other. These safety features are conﬁgured using a commissioning procedure that interacts with the installed burner control module. The commissioning procedure is driven by the burner control module since it is aware of the features it supports and is responsible for their settings. Models that support either one of the features can be identiﬁed in the display module by one of three methods (see Fig. 64):

• “SETUP NEEDED” state is displayed on the Home page

• “BC Commissioning” line is present on the Home page

• “BC Commissioning” line is enabled for navigation on the Display setup menu page

INDICATES COMMISSIONING NEEDED

LINE PRESENT FOR MODELS THAT SUPPORT IT

“NEXT PAGE” FOR MODELS THAT SUPPORT IT

Fig. 64. Commissioning applicable for burner control module

When “SETUP NEEDED” is displayed on the Home page the burner control module will not ﬁre until commissioning is performed. Commissioning can only be performed when the burner control module is in this condition or when it is locked out or in a STANDBY state. Commissioning is not allowed when the burner control module is in any other state. “BC Commissioning” line is only present on the Home page when the burner control module supports it and it is in one of the states listed above.

Commissioning is initiated from either the Home or Display Menu pages (see Fig. 65). The BC commissioning setup menu displays showing the current settings of the three possible commissionable parameters:

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• Postpurge time

• Valve proving when option (when valve proving is executed)

• Valve proving time

Postpurge time speciﬁes how long the burner should be purged after it leaves the “RUN” state. Valve proving (VP) is a feature that provides a systematic way of testing the valve seat integrity to assure the valves are indeed closed when the system is off-line or idle.

Fig. 65. Enter commissioning

If the burner control is not in a state that permits commissioning to proceed, the commissioning setup menu displays this fact, but does display the current parameter settings (see Fig. 66). Only action permitted in this case is to press the left arrow button to exit the menu and return back to the Display setup menu page.

COMMISSIONING CAN’T BE DONE AT THIS TIME

Fig. 66. Commissioning not permitted

When commissioning is allowed the user has the option to continue on with commissioning by selecting the “Yes” command or to exit the menu and not do commissioning with the “No” command. The right and left arrow buttons tab between the two options. Pressing the OK button executes the highlighted command. If “No” is selected, control returns back to the page that it originated from (Home or Display Menu). If “Yes” is selected, the user is requested to log into the burner control module with the commissioning password (see Fig.

67).

Fig. 67. Commissioning login

The commissioning password is “78”. The password is entered by scrolling the digits to “78” using the up and down arrow buttons when in the digit positions. The right and left arrow buttons navigate between the digits and the “Yes” and “No” commands. When the input focus is on the “Yes” and “No” commands the up and down arrow buttons tab between these two options. Pressing the OK button when the input focus is on “Yes” or “No” executes the command. A “Yes” command sends the password to the burner control module to begin commissioning. A successful login transitions to the ﬁrst commission page. An unsuccessful login (wrong password) displays an “INVALID PASSWORD” message (see Fig.

68). If the “No” command is selected, commissioning is canceled and control returns to the

previous page.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fig. 68. Invalid commissioning login

If the login is unsuccessful, the user can retry the login by tabbing back to the password digits using the left or right arrow buttons and re-edit the password.

After a successful login the next commissioning page is automatically displayed (directed by the burner control module) to setup one of these parameters depending on the model:

• Valve Proving (VP) when option – see next ﬁgure

• Postpurge time – see Fig. 71

When valve proving is supported in the burner control module the feature is enabled by specifying when it should occur:

• Not enabled (feature is disabled)

• Enabled prior to RUN (occurs prior to ignition trials)

• Enabled after RUN (after burner is running and before internal safety relay dropout

state)

• Enabled before and after RUN (occurs at both times prior to and after RUN)

• Enabled half before & after RUN (high pressure test occurs prior to RUN and low

pressure test occurs after RUN) The setting is selected by scrolling these choices using the up and down arrow buttons (see Fig. 69). The current parameter setting is displayed when the page is initially entered.

Fig. 69. Commission valve proving when option

The up and down arrow buttons are used to scroll through the choices on the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the choice is set to the desired value the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the choice and exit commissioning, the “No” command is selected and the OK button is pressed.

When the setting is commissioned into the burner control module (“Yes” command is selected) the next page displayed is one of the following (directed by the burner control module):

• Valve Proving (VP) time commission (when VP is not disabled) – see next ﬁgure

• Postpurge time commission (when VP is disabled and postpurge time is supported in

BC) – see Fig. 71

• Valve Proving (VP) when conﬁrmation (when VP is disabled and postpurge time is not

supported in BC) – see Fig. 72 When valve proving is enabled in the burner control module the time duration of the test is conﬁgured (see Fig. 70).

NOTE: Tolerance on value proving timing value is +/- 10%.

The current setting is displayed allowing the user to change it to a new value. This time parameter has a range of 0-63 minutes with times that must be set in the following manner:

• 0-60 seconds in 1 second increments

• 1-10 minutes in 10 second increments

• 10-63 minutes in 1 minute increments

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Because of these conﬁguration constraints the minute and seconds digits increment/ decrement in steps that force the time into these allowed settings.

Fig. 70. Commission valve proving time

The up and down arrow buttons are used to increment/decrement the minutes and seconds digits in the edit line. The right and left arrow buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When the time is set to the desired value the “Yes” command is selected and the OK button is pressed to commit the change. If the user decides not to save the time and exit commissioning, the “No” command is selected and the OK button is pressed.

When the setting is commissioned into the burner control module (“Yes” command is selected) the next page displayed is one of the following (directed by the burner control module):

• Postpurge time commission (when postpurge time is supported in BC) – see Fig. 71

• Valve Proving (VP) when conﬁrmation (when postpurge time is not supported in BC) –

see Fig. 72 When postpurge time is supported in the burner control module it is conﬁgured in the following page (see next ﬁgure). Postpurge time is the time that the combustion fan remains energized after the burner is directed to stop (leave RUN). The current setting is displayed allowing the user to change it to a new value. This time parameter has a range of 0-63 minutes with times that must be set in the following manner (same as VP time):

• 0-60 seconds in 1 second increments

• 1-10 minutes in 10 second increments

• 10-63 minutes in 1 minute increments Because of these conﬁguration constraints the minute and seconds digits increment/ decrement in steps that force the time into these allowed settings.

Fig. 71. Commission Postpurge time

When the setting is commissioned into the burner control module (“Yes” command is selected) the next page displayed is one of the following (directed by the burner control module):

• Valve Proving (VP) when conﬁrmation (when BC model supports valve proving) – see

next ﬁgure

• Postpurge time conﬁrmation (when BC model doesn’t support valve proving) – see Fig.

74 The user is asked to conﬁrm the valve proving when option setting in the following page (see next ﬁgure). The option setting is displayed on the page, and the user conﬁrms it with a “Yes” answer or declines it with a “No” answer.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

To view and conﬁrm Postpurge timing refer to the Commissioning page (see Fig. 65) or in the BC Diagnostics page (see Fig. 78) for locations in the menu system. The Commissioning page can only be viewed when the Burner Control is in an appropriate state to permit commissioning. If it is in that state, current commissioning settings can be viewed without actually starting the commissioning process.

SETTING ENTERED EARLIER

Fig. 72. Conﬁrm valve proving when option

The right and left arrow buttons are used to tab between the “Yes” and “No” commands. When the decision is made the OK button is pressed to inform the burner control module. A “No” command stops the commissioning and control returns back to the commissioning menu. A “Yes” command causes the setting to be approved and one of the following pages to automatically display next (directed by the burner control module):

• Valve Proving (VP) time conﬁrmation (VP when setting is not disabled) – see next ﬁgure

• Postpurge time conﬁrmation (VP when setting is disabled and postpurge time has been

conﬁgured) – see Fig. 74

• Burner commission reset (VP when setting is disabled and postpurge time was not

conﬁgured) – see Fig. 75 The user is asked to conﬁrm the valve proving time setting in the following page (see next ﬁgure). The time setting is displayed on the page, and the user conﬁrms it with a “Yes” answer or declines it with a “No” answer.

SETTING ENTERED EARLIER

Fig. 73. Conﬁrm valve proving time

• Postpurge time conﬁrmation (postpurge time was conﬁgured earlier) – see next ﬁgure

• Burner commission reset (postpurge time was not conﬁgured earlier) – see Fig. 75 The user is asked to conﬁrm the postpurge time setting in the following page (see next ﬁgure). The time setting is displayed on the page, and the user conﬁrms it with a “Yes” answer or declines it with a “No” answer.

SETTING ENTERED EARLIER

Fig. 74. Conﬁrm postpurge time

The right and left arrow buttons are used to tab between the “Yes” and “No” commands. When the decision is made the OK button is pressed to inform the burner control module. A “No” command stops the commissioning and control returns back to the commissioning menu. A “Yes” command causes the setting to be approved and the Burner commission reset page (see next ﬁgure) to automatically be displayed (directed by the burner control module).

47 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The Burner commission reset page is displayed for the ﬁnal step of the commissioning procedure. After all conﬁguration and conﬁrmations are done the RESET button on the burner control module must be pressed and held for 5 seconds. This page (see Fig. 75) automatically displays when the burner control module wants this reset action to be performed.

Fig. 75. Commission RESET button

After the RESET button has been held for 5 seconds the burner control module indicates that commissioning is successfully done (see Fig. 76). The left arrow or OK button can be pressed to exit commissioning and go back to the commissioning menu.

Fig. 76. Commissioning successfully completed

Each step of the commissioning procedure must be performed within 30 seconds after the page is displayed for the step. If the RESET button is released too early (less than 5 seconds) or the user doesn’t respond to a procedure step within 30 seconds, the commissioning session is terminated by the burner control module and this failure is indicated on the page (see Fig. 77 for an example).

Fig. 77. Failed commissioning step

The user has the option to restart commissioning or not if the session fails to end completely. The “Yes” option is selected and the OK button pressed to redo commissioning by logging in again (see Fig. 67). The “No” option is selected and the OK button pressed to not redo commissioning which exits this page and returns back to the commissioning menu to show the current settings (see Fig. 64). The right and left arrow buttons are used to tab between the “Yes” and “No” options.

APPENDIX C: DIAGNOSTICS

Burner Control Diagnostics

Diagnostic information about the burner control module can be viewed on the display module (see Fig. 78). The information displayed is dependent on the burner control module. Only terminals and features that a burner control module includes are displayed. Possible information displayed are:

• Device (model) type

• Run/Test switch (if applicable) status – “Run” or “Test” mode

• Terminal T6-T21 (if applicable) status – “ON” or “OFF”

• Jumper 1-3 (if applicable) status – “Intact” or “Clipped”

• Flame ampliﬁer type

• Flame failure response time (FFRT)

• Purge time (if applicable)

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

• Postpurge time (if applicable)

• Valve proving (VP) when option setting (if applicable)

• Valve proving (VP) time (if applicable)

• Manufacturing code

• Software revision

• Reset count (number of times the module has reset due to an internal fatal error)

• Reset reason code of most recent internal fatal error Terminals are displayed with their model use, e.g., T6 may be used as a “Demand” or “Operating control” terminal.

Fig. 78. Burner control diagnostics

The up and down arrow buttons are used to scroll the status lines. The left arrow button is used to exit the page and return back to the Home page.

Annunciator Diagnostics

Diagnostic information about the annunciator can be viewed on the display module when an annunciator is connected in the system (see Fig. 79). If an annunciator is not connected, this information is not accessible. The following information is displayed:

• Annunciator status

• T4-T22 terminal status – “ON” or “OFF”

• Fault (“ﬁrst out”) code

• Software revision The assigned terminal names display for the T4-T22 terminals.

Fig. 79. Annunciator diagnostics

The up and down arrow buttons are used to scroll the status lines. The left arrow button is used to exit the page and return back to the Home page.

Display Diagnostics

Diagnostic information about the display module can be viewed on a diagnostics page (see Fig. 80). The following information is displayed:

• Manufacturing code (when the display was built)

• Display software version

• Internal temperature (inside the display)

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

• Supply voltage to the display

• Backlight power (percentage of power driving the backlight)

• Backlight feedback (current feedback from backlight)

• Heater status (percentage of power driving the LCD heater)

• Number of received Modbus packets

• Number of transmitted Modbus packets

Fig. 80. Display diagnostics

More diagnostic lines exist than can ﬁt on the main body of the page so the up and down arrow buttons are used to scroll among the lines. The left arrow button is used to exit this page and return back to the Display setup menu.

An additional selection line exists on the page to allow for LCD diagnostics to be initiated for checking the LCD hardware (see Fig. 81). The right arrow or OK button is used when this LCD diagnostics line is selected navigates to the LCD diagnostics page. One of the following tests can be conducted:

• All pixels ON (white display)

• All pixels OFF (black display)

• Fixed dots (every other pixel is on)

Fig. 81. LCD diagnostics test

The up and down arrow buttons are used to scroll through the different test selections. The right and left arrow buttons are used to tab to the “Start test” options, “Yes” and “No”. When the input focus is on the “Start test” options the up and down arrow buttons scroll between “Yes” and “No”. Pressing the OK button when the “Yes” option is selected begins the LCD test. The LCD test displays until the user presses any button to return back to the test selection page. Pressing the OK button when the “No” option is selected exits this page and returns back to the Display diagnostics page.

APPENDIX D: ANNUNCIATOR TERMINAL MESSAGES

Annunciator terminals can be named to the messages listed in the following table. See “Annunciator Setup” on page 26 for the procedure that performs this name assignment. This name assignment is intended to match the annunciator terminal with the installation purpose of the terminal. The messages are categorized into the following groups:

• Standard terminal names (20 names)

• Common ﬁxed names (17 names)

• Custom message names (20 names) - see “Annunciator Setup” on page 26

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Message

Group

Standard 4 Valve close Standard 5 Burner switch

Standard 6

Standard 7

Standard 8

Standard 9

Standard 10 High limit

Standard 11

Standard 12 Oil selection

Standard 13

Standard 14

Standard 15

Standard 16

Standard 17 Gas selection

Standard 18

Standard 19 Gas

Standard 19 Oil

Standard 20 Airﬂow switch

Standard 21

Standard 22

Fixed 23 High water Fixed 24 Low water Fixed 25 High stack Fixed 26 High blast Fixed 27 Low pilot Fixed 28 High pilot

Fixed 29

Fixed 30

Fixed 31 FD fan ILK

Fixed 32

Fixed 33 Exhaust fan

Fixed 34

Fixed 35 Oil pump Fixed 36 Low FGR

Fixed 37

Fixed 38

Fixed 39 ControLinks Custom 45 Default 1* Custom 46 Default 2* Custom 47 Default 3* Custom 48 Default 4*

51 320011007

Message

Number

Text

Operating control Auxiliary Limit #1 Auxiliary Limit #2 Low water cutoff (LWCO)

Auxiliary Limit #3

High oil pressure Low oil pressure High oil temperature Low oil temperature

High gas pressure Low gas pressure Atomizing switch

Auxiliary ILK #4 Auxiliary ILK #5

Combustion damper Stack damper PV

Recirculating fan

Combustion fan

Low combustion AP High temperature

Message

Group

Custom 49 Default 5* Custom 50 Default 6* Custom 51 Default 7* Custom 52 Default 8* Custom 53 Default 9* Custom 54 Default 10* Custom 55 Default 11* Custom 56 Default 12* Custom 57 Default 13* Custom 58 Default 14* Custom 59 Default 15* Custom 60 Default 16* Custom 61 Default 17* Custom 62 Default 18* Custom 63 Default 19* Custom 64 Default 20*

* Custom message text is editable so this text can

var y.

Table 7. Annunciator Terminal Messages

Message

Number

Text

Custom annunciator and Call for Service messages can be edited using the characters listed in the following table.

(space) A-Z a-z 0-9 . , - / : " ?

< > { } [ ] ; ““ \ | + _ = ( ) * & ^ % $ # @

! ?

Table 8. English Character Set

When the selected language is French or Spanish, the character set for those languages will be shown on the display. This table only shows the English character set.

APPENDIX E: MODBUS FUNCTION

See page 28 APPENDIX A: DISPLAY SETUP for Setup.

OPERATION

The S7800 ModBusTM Data Feature enables terminal 1, 2 to Data + and Data -. Table 16 provides register mapping. It identiﬁes the mapping of the 7800 SERIES parameters to ModBusTM registers.

Function Codes

Supported function codes of Modbus Protocol Reference Guide (PI-MBUS-300 Rev. J) are 3, 4, 6, 16, and 17. Function codes 3 and 4 are treated the same by the S7800. Two registers should be read when the data format is a U32 value (4 bytes); if both registers are not read, then data for a part of the value is returned. U32 values are either in Big-endian or Little-endian format.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

The maximum number of addresses that can be queried is 127 (0x7F) for each query message.

Table 9 through 12 provide information on the function codes.

NOTE: All Query and Response cells below are 1 byte.

Number

of Ad-

dresses

High

Preset

Data High

Preset

DataHigh

Code

03 or

Starting Address

High

00 0A 00 01 A4 08

Byte Count Data High Data Low CRC CRC

Starting Address

High

Starting Address

High

Slave

Address

Table 9. Query Message Format for Function Codes 3 and 4.

Slave

Function

Code

03 or

Function

Address

Table 10. Response Message Format for Function Codes 3 and 4.

Slave

Address

01 06 00 7F 00 04 B9 D1

Table 11. Query Message Format for Function Code 6.

Slave

Address

01 06 00 7F 00 04 B9 D1

Table 12. Response Message Format for Function Code 6

(There is no response if the query was broadcast.)

Function

Code

Function

Code

Starting Address

Low

02 00 22 38 5D

Starting Address

Low

Starting Address

Low

Number

of Ad-

dresses

Low

Preset

Data Low

Preset

Data Low

CRC CRC

Slave Address Function Code CRC CRC

03 11 C1 4C

Table 13. Query Message Format for Function Code 17.

Slave Address

Table 14. Exception Response Message Format.

Function Code

+ 80h

Exception Code CRC CRC

Exception Code Deﬁnition Description

01 Illegal Function

03 Illegal Data Value

Table 15. Exception Codes.

320011007 52

Illegal Data Ad-

dress

An illegal function as requested. Only 3, 4, 6 and 17 are

supported. Too many bytes requested, address is out of range, register is read only, or the number of address requested is

past the last register.

The “Preset Data” from function code 6 is invalid/out of

range.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Device Address and Baud Rate

Assign each device in the system a unique address by setting the MODBUS ADDRESS (see page 21). Only RTU communications with 1 Start Bit, 8 Data Bits, 1 Stop Bit and no, odd, or even parity is supported.

NOTE: Assign a device address number from 01 to 255. 00 is not an acceptable address

number and will not work.

NOTE: In Table 16: Line 1 and Line 2 refer to the two lines of text on the S7800 Keyboard

Display Module. In Table 20: The String Code column references Table 21, String Codes. In Table 16: The Burner Control State Bits column references Table 19, Burner Con- trol State Bits.

Address

(hex)

0000 40001

0001 40002

0002 40003

0003 40004

0004 40005

0005 40006

0006 40007 BC Total cycles R U32 Max value is 0xFFFFFFFF. 0008 40009 BC Total hours R U32 Max value is 0xFFFFFFFF.

000A 40011

000B 40012

000C 40013 BC State Bits R U16 See Table 19.

000D 40014

000E 40015 S7830 State Bits R U32 0010-

0019 001A-

0023 0024-

002D 002E-

0037 0038-

0041 0042-

004B

004C 40077

004D 40078

004F 40080 BC Type Code R U16 See Table 18.

0050 40081

0052 40083

Reg-

ister

(dec)

4001740026

4002740036

4003740046

4004740056

4005740066

4006740076

Parameter

Name

Burner Control (BC) Fault Code BC Fault String Code BC Sequence State BC State String Code (line 1) BC State String Code (line 2) BC Sequence time

BC Flame 1 signal strength BC Flame 2 signal strength

S7830 First Out Code

BC Fault history record 1

BC Fault history record 2

BC Fault history record 3

BC Fault history record 4

BC Fault history record 5

BC Fault history record 6

BC Flame Failure Response Time BC Manufacturing code

S7800M/BC Software version EA Software version

Read/

Write

R U16

R U16 See Table 21. Lockout text.

R U16 See Table 20 (valid only if Fault code = 0).

R U16 See Table 21. Simulates Line 1 of S7800.

R U16 See Table 21. Simulates Line 2 of S7800.

R U16 0-4095 Seconds.

R U16

R U16 0 to 4095. N/A for 7800 SERIES.

R U16 Not supported from S7800.

R Newest fault record. See Table 23.

R Second newest fault record. See Table 23.

R Third newest fault record. See Table 23.

R Fourth newest fault record. See Table 23.

R Fifth newest fault record. See Table 23.

R Oldest fault record. See Table 23.

R U16 Tenths of Seconds.

R U32

R U32 Does not apply.

Format

See Table 22. Non-zero value = Lockout number.

0 to 255 represents 0.0 to 25.5 volts. Not clipped to 5.0V like S7800.

Notes

53 320011007

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Address

(hex)

0054 40085

0055 40086

0056 40087 BC Purge Time R U16 Seconds

00570065

0066 40103 Post-Purge time R U16 Seconds

0067 40104

0068 40105

0069 40106

006A 40107

006C007E

007F 40128

01B701B8

Reg-

ister

(dec)

4008840102

4010940127

4044040441

Parameter

Name

BC Remote Command status.

BC Flame Ampliﬁer type

BC Diagnostics R U16

Valve Proving Mode

Valve Proving option Valve Proving time

BC terminal state bits

Unused

BC Remote Command

Unused U32

Read/

Write

R U16

R U16 Seconds

R U32

R/W U16

Format

Bit 0: Autonomous. Bit 1: Remote commanded off. Bit 2: Remote commanded High ﬁre. Bit 3: Remote commanded low ﬁre. Bit 4: Remote reset has/will be sent to BC.a Bits 5-14: Unused. Bit 15: Copied after the most recent write to the burner control command (40128 bit 15). 0 = Standard 1 = Unknown 2 = Amplicheck or missing ampliﬁer 3 = Shutter

String codes indicating terminal/jumper state. See Table 21. There are up to 15 codes. Not all are used for some burner controls.

0 = Valve Proving is not enabled 1 = Enabled before Run 2 = Enabled after Run 3 = Enabled before and after Run 4 = Enabled split half before and half after Run 1 = Uncommissioned 2 = Commissioned

Bit 0 (LSB) to Bit 31 (MSB) represent terminals T0 to T31 of burner control: T0 = Run/Test switch T5 = Fan T6-T21 = terminal T24 = Alarm T25 = Modulate T26 = Reset T27 = Safety relay T28 = Flame ILK T29 = Main Valve 2

Only one bit in the LSByte must be set, with the exception of bit 15: Bit 0 =Revert to autonomous operation. Bit 1 = Don’t ﬁre, remain off. Bit 2 = Go to Hi Fire during Run. Bit 3 = Go to Lo Fire during Run. Bit 4 = Remote reset.a Bits 5-7 must be 0. Bits 8-14 are ignored. Bit 15: Copied to the control status register. The remote control status register can be used to verify operation of the command. Bits 1-3 must be refreshed at least every 120 seconds, but not more than once a second, for the burner control to remain in the commanded state.

Notes

320011007 54

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Address

(hex)

01BA 40443

01BB 40444

01BC 40445

Table 16. ModBus™ Register Assignments.

Reg-

ister

(dec)

Parameter

Name

Device Data Ready

S7800 Device Compatibility with Current Software Revision

S7800 Software Revision Compatibility with Legacy Software Revisions.

Modbus U32 Endian

Read/

Write

R/W U16

Format

U16

Notes

Device data was properly received by S7800. Bit(s) Device 0 RM78XX 3 EC78XX 4-15 Unused

Device is compatible with the S7810M version Bit Device 0 RM78XX 3 EC78XX 4-7 Unused

Used for indication of S7800 revision compatibility. Bit(s) Compatible with: 8 Series 2 9-15 Future

Endian order for U32 registers: 0 = Big-Endian (MS U16 ﬁrst) 1 = Little-Endian (LS U16 ﬁrst)

NOTE: “Device Data Ready” and “S7800 Compatibility” bits can be used to quickly check

device availability and compatibility then read/write registers of only these devices.

Response Message Format for Function Code 17

This format is device speciﬁc and is only available for the 7800 SERIES burner control. See Table 17.

Slave

Address

Byte 0 1 2 3 4 5-15 16-23 24 25

a Slave ID: Always 0x78 when using RM78xx or EC78xx Relay Modules(1 byte) (byte 3).

b Run Indicator Status: Always FF=ON (one byte) (byte 4).

c Device Description: 16 character ASCII OS number for the Burner Control (11 bytes) (bytes 1-11).

Table 17. Response Message Format for function code 17 (11h), (26 bytes).

55 320011007

Func-

tion

Code

Byte

Count

Slave

Run

Indicator

Status

Device

Descrip-

tion

N/A CRC CRC

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Burner Control Type Codes

The burner control type code indicates the exact model number of the burner control. See Table 18.

CODE DEVICE DESCRIPTION

0 (undeﬁned) 100 RM7800E

101 RM7800G

102 RM7800L

103 RM7800M

104 RM7838A

105 RM7838B

106 RM7840E 107 RM7840G 108 RM7840L

109 RM7840M 110 RM7885A 111 RM7888A

112 RM7890A

113 RM7895A

114 RM7895B

115 RM7823A

116 RM7824A

117 RM7830A

118 RM8738C

119 RM7845A

120 RM7850A

121 RM7865A

122 RM7865B

123 RM7865C

124 RM7890B

125 RM7890C

126 RM7890D 127 RM7895C 128 RM7895D

129 RM7895E

130 RM7895F

131 RM7896A

132 RM7896B

133 RM7896C

134 RM7896D

135 RM7897A

136 RM7897C

137 RM7898A 138 R7140G 139 R7140L

140 R7140M

199 RM78xx

CODE DEVICE DESCRIPTION

200 EC7810A

201 EC7820A

202 EC7830A

203 EC7850A

204 EC7885A

205 EC7890A 206 EC7895A 207 EC7895C 208 EC7823A

209 EC7840L

210 EC7865

299 EC78xx

Table 18. Burner Control Type Codes.

7800 SERIES Burner Control State Bits

The burner control sequence state is translated into State Bit Register as shown in Table 19.

BIT Description BC State Bits Register

0 Initiate 0000 0000 0000 0001

1 Standby 0000 0000 0000 0010

2 Purge 0000 0000 0000 0100

3 Pilot Ignition 0000 0000 0000 1000

4 Main Ignition 0000 0000 0001 0000

5 Run 0000 0000 0010 0000

6 Postpurge 0000 0000 0100 0000

7 Pre-Ignition 0000 0000 1000 0000

8 Valve Proving 0000 0001 0000 0000

13 Alarm

14 Hold

15 Lockout

Table 19. Burner Control State Bits.

7800 SERIES Sequence State Codes

Sequence state codes are provided by the Burner Control. Each code is translated into two string codes for displaying an associated message in two lines. Each code is also translated into burner control state bits which may be used to generate and control system diagrams on an operator interface. The codes can also be retrieved from registers 40004, 40005, and 40013.

The Sequence State Codes shown in Table 20 are valid only if the Fault Code has a

320011007 56

1010 0000 xxxx xxxx NOTE: Lockout bit is also set.

0100 0000 xxxx xxxx One other bit may be on.

1010 0000 0000 0000 NOTE: Alarm bit is also set.

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

value of zero. If the Fault Code is nonzero, the sequence state ﬁeld contains the sequence state code when the lockout occurred.

Reg-

ister

40003

Fault code

not

zero

57 320011007

7800

SERIES

Sequence

State

LOCKOUT 52

UNUSED

HISTORY

1 INITIATE 48 0 3 0001h

INITIATE

HOLD: AC

FREQUEN-

CY/NOISE

INITIATE

HOLD:

AC LINE

DROPOUT

INITIATE

HOLD:

AC FRE-

QUENCY

INITIATE

HOLD:

LOW LINE

VOLTAGE

6 STANDBY 103 0 0002h

STANDBY

HOLD: REM

REMOTE

CONTROL

STANDBY

HOLD:

START

SWITCH

STANDBY

HOLD: F/G

FLAME DE-

TECTED

STANDBY

HOLD: T20

Pre-ignition

STANDBY

HOLD: T7

RUNNING

INTERLOCK

STANDBY HOLD: T7

Lockout

Interlock

Code

Line 1Line

Table 22

0 0 0000h

49 8 4001h

49 9 4001h

49 7 4001h

49 60 4001h

104 94 4002h

104 106 4002h

104 35 4002h

104 86 4002h

104 101 4002h

104 54 4002h

String

Uses

mm:ss

Burn-

Con-

trol

State

Bits

8000h

Reg-

ister

40003

19 PURGE 87 0 3 0004h

25 PILOT IGN 78 0 3 0008h

28 MAIN IGN 66 0 3 0010h

7800

SERIES

Sequence

State

STANDBY

HOLD:

AIRFLOW

SWITCH

PURGE

HOLD: T19

High Fire

Switch

PURGE

DELAY:T19

High Fire

Jumprd

PURGE

HOLD: TEST

Run/Test

Switch

PURGE

DELAY: T18

Low Fire Jumprd

PURGE

HOLD: F/G

FLAME DE-

TECTED

PURGE

HOLD: T18

LOW FIRE

Switch

PuRGE

HOLD: T7

Running Interlock

PURGE

HOLD:

LOCKOUT

INTERLOCK

PURGE

HOLD:

AIRFLOW

SWITCH

PURGE

HOLD: START

SWITCH

PILOT

HOLD: TEST

RUN/TEST

SWITCH

PILOT

HOLD:

START

SWITCH

String

Code

Line 1Line

104 13 4002h

93 40 4004h

89 39 4004h

93 98 4004h

89 56 4004h

93 35 4004h

93 58 4004h

101

93 54 4004h

93 13 4004h

93 106 4004h

77 98 4008h

77 106 4008h

Uses

mm:ss

Burn-

Con-

trol

State

Bits

4004h

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Reg-

ister

40003

30 RUN 95 0 0020h

35 POSTPURGE 83 0 3 0040h

39 SAFETY1-1 102 2 3 0008h

40 SAFETY1-2 102 3 3 0008h

41 SAFETY1-3 102 4 3 0008h

42 SAFETY1-4 102 5 3 0008h

43 SAFETY1-5 102 6 3 0008h

44 Blank 0 0 A000h

46 SAFETY 1 102 1 3 0008h

47 PILOT STAB. 79 0 0008h

48 MAIN TRIAL 68 0 3 0010h

49 MAIN TRIAL 68 0 0010h

51 STATE 51 31 0 A000h

52 STATE 52 31 0 A000h

54 STATE 54 31 0 A000h

7800

SERIES

Sequence

State

MAIN IG

HOLD:

MANU-

AL-OPEN

SWITCH

RUN PV

HOLD:

LOW FIRE

SWITCH

PVHOLD

IGN

PV HOLD:

PV HOLD

SWITCH

RUN/LOW-

FIRE: TEST RUN/TEST

SWITCH

STATE UN-

KNOWN

RESET/ ALARM

TEST

SAFETY

START

PRE-IGNI-

TION

STANDBY

HOLD:

RUN/TEST

SWITCH

SAFETY

RUN/TEST

SWITCH

Code

Line 1Line

67 72 4010h

96 58 4020h

77 46 3 4008h

77 45 4008h

97 98 4020h

31 0 6000h

111 0 6000h

102 105 4002h

84 0 3 0080h

104 98 4002h

102 98 4008h

String

Uses

mm:ss

Burn-

Con-

trol

State

Bits

Reg-

ister

40003

56 STATE 56 31 0 A000h

60 VP START 210 0 3 4100h

61 VP MV2 ON 211 0 3 4100h

62 VP LOW DLY 212 0 3 4100h

63 VP LOW TST 213 0 3 4100h

64 VP MV1 ON 214 0 3 4100h

66 VP HIGH TST 216 0 3 4100h

70 STATE 70 31 0 A000h

76 UNUSED 0

7800

SERIES

Sequence

State

STANDBY

HOLD:

PURGE FAN

SWITCH

PURGE

HOLD:

PURGE FAN

SWITCH

STAND-

BY HOLD

FLAME

DETECTED

STAND-

BY HOLD

COMB.

PRESSURE

VP HIGH

DLY

INITIATE

HOLD: AC

AC PHASE

ERROR

STANDBY

HOLD:

PRE-IGNI-

TION ILK

SETUP

NEEDED

BURNER

OFF: T6

BURNER

SWITCH

STANDBY

HOLD: (EA)

HOLD MSG

STANDBY

HOLD: (EA)

CIRCUIT

FAULT

STANDBY

HOLD (EA)

PURGE

HOLD (EA)

String

Code

Line 1Line

104 92 4002h

93 92 4004h

104 35 4002h

104 26 4002h

215 0 3 4100h

49 10 4001h

104 85 4002h

217 0 A000h

22 23 4002h

184 30 4002h

184 25 4002h

Var-

184

ies

Var-

185

ies

Uses

mm:ss

Burn-

Con-

trol

State

Bits

4002h

4004h

320011007 58

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

String Code String

25 CIRCUIT FAULT

26 COMB. PRESSURE

27 CONTROL ON

28 DELAYED MV ON

29 DEVICE SPECIFIC

30 EA HOLD MESSAGES

31 UNKNOWN STATE

32 FLAME AMP TYPE

33 FLAME AMP/SHUTR

34 FLAME AMPLIFIER

35 FLAME DETECTED

36 FLAME TOO STRONG

37 FLAME-OUT TIMER

38 FUEL SELECT OFF

39 HIGH FIRE JUMPERED

40 HIGH FIRE SWITCH

41 HIGH GAS PRESSURE

42 HIGH LIMIT

43 HIGH OIL PRESSURE

44 HIGH OIL TEMP

45 HOLD SWITCH

46 iGNITION

47 IGNITION ON

48 INITIATE

49 INITIATE HOLD

50 JUMPERS CHANGED

51 JUMPERS WRONG

52 LOCKOUT

53 LOCKOUT ILK ON

54 LOCKOUT INTERLOCK

55 LOCKOUT SWITCH

56 LOW FIRE JUMPERED

57 LOW FIRE SW OFF

58 LOW FIRE SWITCH

59 LOW GAS PRESSURE

60 LOW LINE VOLTAGE

61 LOW OIL PRESSURE

62 LOW OIL TEMP

63 LWCO

64 MAIN FLAME FAIL

65 MAIN FLAME IGN.

66 MAIN IGN

67 MAIN IGN HOLD

68 MAIN TRIAL

69 MAIN VALVE ON

Reg-

ister

40003

7800

SERIES

Sequence

State

String

Code

Line 1Line

Uses

mm:ss

Burn-

Con-

trol

State

Bits

77 UNUSED 0 0h

78 UNUSED 0 0h

79 UNUSED 0 0h

80 UNUSED 0 0h

STANDBY

HOLD (EA):

VALVE CLO-

184 109 4002h

SURE

STANDBY

HOLD (EA)

184 75 4002h

OTHER PII

Table 20. 7800 SERIES Sequence State Codes and

Associated register code values.

7800 SERIES String Codes

Table 21 contains a listing of all string codes provided by the S7800 Keyboard Display Module or similar device.

String Code String

0 (blank)

1 1

2 1-1

3 1-2

4 1-3

5 1-4

6 1-5

7 AC FREQUENCY

8 AC Frequency/Noise

9 AC LINE DROPOUT

10 AC PHASE

11 ACCESSORY FAULT

12 AIRFLOW SW. ON

13 AIRFLOW SWITCH

14 ATOMIZING SW

15 AUX INTERLOCK #4

16 AUX INTERLOCK #5

17 AUX LIMIT #1

18 AUX LIMIT #2

19 AUX LIMIT #3

20 BLOCK INTAKE

21 BOTH FUELS SELECT

22 BURNER OFF

23 BURNER SWITCH

24 CALL SERVICE

59 320011007

Page 60

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

String Code String

70 MAN-OPEN SW. OFF

71 MAN-OPEN SW. ON

72 MAN-OPEN SW.

73 NO PURGE CARD

74 OTHER INTERLOCKS

75 OTHER PREIGN ILK

76 PILOT FLAME FAIL

77 PILOT HOLD

78 PILOT IGN

79 PILOT STABILIZE

80 PILOT VALVE 1 ON

81 PILOT VALVE 2 ON

82 POOR FLAME SENSOR

83 POSTPURGE

84 PRE-IGNITION

85 PRE-IGNITION ILK

86 PRE-IGNITION

87 PURGE

88 PURGE CARD ERROR

89 PURGE DELAY

90 PURGE FAN SW OFF

91 PURGE FAN SW ON

92 PURGE FAN SWITCH

93 PURGE HOLD

94 REMOTE CONTROL

95 RUN

96 RUN HOLD

97 RUN/LOWFIRE

98 RUn/TEST SWITCH

99 RUNNING ILK

100 RUNNING ILK ON

101 RUNNING INTERLOCK

102 SAFETY

103 STANDBY

104 STANDBY HOLD

105 START

106 START SWITCH

107 START SWITCH ON

108 TEST STATE

109 VALVE CLOSURE

110 ALL SWITCHES ON

111 RESET/ALARM TEST

112 Run/Test Switch RUN

113 Run/Test Switch TEST

114 Operator Control T6 = 0

String Code String

115 Operator Control T6 = 1

116 Interlock T7 = 0

117 Interlock T7 = 1

118 Airﬂow Interlock T7 = 0

119 Airﬂow Interlock T7 = 1

120 Block Intake T7 = 0

121 Block Intake T7 = 1

122 Valve T8 = 0

123 Valve T8 = 1

124 Intrptd PV T8 = 0

125 Intrptd PV T8 = 1

126 Main Valve T9 = 0

127 Main Valve T9 = 1

128 Ignition T10 = 0

129 Ignition T10 = 1

130 PV Hold T16 = 0

131 PV Hold T16 = 1

132 Input A T16 = 0

133 Input A T16 = 1

134 ManOpenSw T17 = 0

135 ManOpenSw T17 = 1

136 Input B T17 = 0

137 Input B T17 = 1

138 PreIgn ILK T17 = 0

139 PreIgn ILK T17 = 1

140 LowFire Sw T18 = 0

141 LowFire Sw T18 = 1

142 Purge Fan T18 = 0

143 Purge Fan T18 = 1

144 HighFire Sw T19 = 0

145 HighFire Sw T19 = 1

146 PreIgn ILK T20 = 0

147 PreIgn ILK T20 = 1

148 Lockout Inp T20 = 0

149 Lockout Inp T20 = 1

150 Comb Press T20 = 0

151 Comb Press T20 = 1

152 Valv/Start T21 = 0

153 Valv/Start T21 = 1

154 Intmitt PV T21 = 0

155 Intmitt PV T21 = 1

156 Terminal T6 = 0

157 Terminal T6 = 1

158 Terminal T7 = 0

159 Terminal T7 = 1

320011007 60

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7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

String Code String

160 Terminal T8 = 0

161 Terminal T8 = 1

162 Terminal T9 = 0

163 Terminal T9 = 1

164 Terminal T10 = 0

165 Terminal T10 = 1

166 Terminal T16 = 0

167 Terminal T16 = 1

168 Terminal T17 = 0

169 Terminal T17 = 1

170 Terminal T18 = 0

171 Terminal T18 = 1

172 Terminal T19 = 0

173 Terminal T19 = 1

174 Terminal T20 = 0

175 Terminal T20 = 1

176 Terminal T21 = 0

177 Terminal T21 = 1

178 Jumper 1 Intact

179 Jumper 1 Clipped

180 Jumper 2 Intact

181 Jumper 2 Clipped

182 Jumper 3 Intact

183 Jumper 3 Clipped) The values that follow are generated when the

fault code is zero and the Expanded Annunciator code indicates that one or more switches are open. The Line 2 string code will indicate which switch is open.

184 STANDBY HOLD (EA)

185 PURGE HOLD (EA)

186 PILOT HOLD (EA)

187 MAIN IG HOLD (EA)

188 RUN HOLD (EA)

189 POSTPURGE HOLD (EA)

190 PRE-IGNITION HOLD (EA)

191 -SKIPPED-

192 DEMAND T6 = 0

193 DEMAND T6 = 1

194 PILOT VALVE T8 = 0

195 PILOT VALVE T8 = 1

196 INTERMIT PV T8 = 0

197 INTERMIT PV T8 = 1

198 MAIN VALVE1 T9 = 0

199 MAIN VALVE1 T9 = 1

200 VP SWITCH T16 = 0

61 320011007

String Code String

201 VP SWITCH T16 = 1

202 MAIN VALVE2 T17 = 0

203 MAIN VALVE2 T17 = 1

204 INTRUPTD PV T21 = 0

205 INTRUPTD PV T21 = 1

206 DELAYED MV T21 = 0

207 DELAYED MV T21 = 1

208 START SW T21 = 0

209 START SW T21 = 1

210 VP START

211 VP MV2 ON

212 VP LOW DLY

213 VP LOW TST

214 VP MV1 ON

215 VP HIGH DLY

216 VP HIGH TST

217 VP SETUP NEEDED

218 MAIN VALVE 1 OFF

219 MAIN VALVE 2 OFF

220 MAIN VALVE 1 ON

221 MAIN VALVE 2 ON

222 VPS OFF

223 VPS ON

Table 21. Table 21. 7800 SERIES String codes.

7800 SERIES Fault Codes

Table 22 is a complete list of fault codes that may appear in the fault code register. The Fault String Code register will contain the corresponding String code identiﬁed in the table.

Fault Code

(Reg

40001)

0 Blank (no fault) 0

1 FAULT 1: NO PURGE CARD 73

2 FAULT 2: AC FREQUENY/NOISE 8

3 FAULT 3: AC LINE DROPOUT 9

4 FAULT 4: AC FREQUENCY 7

5 FAULT 5: LOW LINE VOLTAGE 60

6 FAULT 6: PURGE CARD ERROR 88

7 FAULT 7: FLAME AMPLIFIER 34

8 FAULT 8: FLAME AMP/SHUTR 33

9 FAULT 9: FLAME DETECTED 35

10 FAULT 10: PRE-IGNITION ILK 85

11 FAULT 11: RUNNING ILK ON 100

12 FAULT 12: LOCKOUT ILK ON 53

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

Fault

String

Code

(Table

21)

Page 62

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code

(Reg

40001)

13 FAULT 13: AIRFLOW SW. ON 12

14 FAULT 14: HIGH FIRE SWITCH 40

15 FAULT 15: FLAME DETECTED 35

16 FAULT 16: FLAME-OUT TIMER 37

17 FAULT 17: MAIN FLAME FAIL 64

18 FAULT 18: FLAME DETECTED 35

19 FAULT 19: MAIN FLAME IGN. 65

20 FAULT 20: LOW FIRE SW OFF 57

21 FAULT 21: RUNNING ILK 99

22 FAULT 22: LOCKOUT ILK 54

23 FAULT 23: AIRFLOW SWITCH 13

24 FAULT 24: CALL SERVICE 24

25 FAULT 25: CALL SERVICE 24

26 FAULT 26: MAN-OPEN SW. OFF 70

27 FAULT 27: START SWITCH ON 107

28 FAULT 28: PILOT FLAME FAIL 76

29 FAULT 29: LOCKOUT ILK 54

30 FAULT 30: RUNNING ILK 101

31 FAULT 31: LOW FIRE SW OFF 57

32 FAULT 32: AIRFLOW SWITCH 13

33 FAULT 33: PRE-IGNITION ILK 85

34 FAULT 34: CONTROL ON 27

35 FAULT 35: CALL SERVICE 24

36 FAULT 36: CALL SERVICE 24

37 FAULT 37: CALL SERVICE 24

38 FAULT 38: CALL SERVICE 24

39 FAULT 39: CALL SERVICE 24

40 FAULT 40: CALL SERVICE 24

41 FAULT 41: MAIN VALVE ON 69

42 FAULT 42: PILOT VALVE 1 ON 80

43 FAULT 43: IGNITION ON 47

44 FAULT 44: PILOT VALVE 2 ON 81

45 FAULT 45: LOW FIRE SW OFF 57

46 FAULT 46: FLAME AMP TYPE 32

47 FAULT 47: JUMPERS CHANGED 50

48 FAULT 48: DELAYED MV ON 28

49 FAULT 49: MAN-OPEN SW. ON 71

50 FAULT 50: JUMPERS WRONG 51

51 FAULT 51: FLAME TOO STRONG 36

52 FAULT 52: CALL SERVICE 24

53 FAULT 53: LOCKOUT SWITCH 55

54 FAULT 54: COMB. PRESSURE 26

55 FAULT 55: PURGE FAN SW ON 91

56 FAULT 56: BLOCK INTAKE 20

57 FAULT 57: PURGE FAN SW OFF 90

58 FAULT 58: COMB. PRESS/FLAME 26

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

Fault

String

Code

(Table

21)

Fault Code

(Reg

40001)

59 FAULT 59: CALL SERVICE 24

60 FAULT 60: CALL SERVICE 24

61 FAULT 61: MV1 OFF 218

62 FAULT 62: MV2 OFF 219

63 FAULT 63: MV1 ON 220

64 FAULT 64: MV2 ON 221

65 FAULT 65: VPS OFF 222

66 FAULT 66: VPS ON 223

67 FAULT 67: AC PHASE 10

68 FAULT 68: PRE-IGNITION ILK 85

69 FAULT 69: CALL SERVICE 24

70 FAULT 70: CALL SERVICE 24

71-75 FAULT 71-75: DEVICE SPECIFIC 29

76-93 FAULT 76-93: ACCESSORY FAULT 11

94-127 FAULT 94-127: CALL SERVICE 24

128

129–

141 142 FAULT 68z: OTHER PREIGN ILKEA 75

143 FAULT 68y: VALVE CLOSUREEA 109

144 FAULT 33z: OTHER PREIGN ILKEA 75

145 FAULT 33y: VALVE CLOSUREEA 109

146

147

148

149 FAULT 32p: AIRFLOW SWITCHEA 13

150

151

152 FAULT 32m: ATOMIZING SWEA 14

153 FAULT 32k: LOW OIL TEMPEA 62

154 FAULT 32j: HIGH OIL TEMPEA 44

155

156

157

158 FAULT 32f: FUEL SELECT OFFEA 38

159 FAULT 32e: AUX LIMIT #3EA 19

160 FAULT 32d: HIGH LIMITEA 42

161 FAULT 32c: LWCOEA 63

162 FAULT 32b: AUX LIMIT #2EA 18

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

FAULT 128: POOR FLAME

SENSOR

FAULT 129-141: CALL SERVICE 24

FAULT 32s: OTHER INTERLOCK-

FAULT 32r: AUX INTERLOCK

FAULT 32q: AUX INTERLOCK

FAULT 32o: LOW GAS PRESSU-

FAULT 32n: HIGH GAS PRESSU-

FAULT 32i: LOW OIL PRESSU-

FAULT 32h: HIGH OIL PRESSU-

FAULT 32g: BOTH FUELS SE-

SEA

#5EA

#4EA

REEA

LECTEA

Fault

String

Code

(Table

21)

320011007 62

Page 63

7800 SERIESS7800A2142 4Line LCD Keyboard Display Module

Fault Code

(Reg

40001)

163 FAULT 32a: AUX LIMIT #1EA 17

164

165

166

167 FAULT 30p: AIRFLOW SWITCHEA 13

168

169

170 FAULT 30m: ATOMIZING SWEA 14

171 FAULT 30k: LOW OIL TEMPEA 62

172 FAULT 30j: HIGH OIL TEMPEA 44

173

174

175

176 FAULT 30f: FUEL SELECT OFFEA 38

177 FAULT 30e: AUX LIMIT #3EA 19

178 FAULT 30d: HIGH LIMITEA 42

179 FAULT 30c: LWCOEA 63

180 FAULT 30b: AUX LIMIT #2EA 18

181 FAULT 30a: AUX LIMIT #1EA 17

182

183

184

185 FAULT 29p: AIRFLOW SWITCHEA 13

186

187

188 FAULT 29m: ATOMIZING SWEA 14

189 FAULT 29k: LOW OIL TEMPEA 62

190 FAULT 29j: HIGH OIL TEMPEA 44

191

192

193

194 FAULT 29f: FUEL SELECT OFFEA 38

195 FAULT 29e: AUX LIMIT #3EA 19

196 FAULT 29d: HIGH LIMITEA 42

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

FAULT 30s: OTHER INTERLOCK-

FAULT 30r: AUX INTERLOCK

FAULT 30q: AUX INTERLOCK

FAULT 30o: LOW GAS PRESSU-

FAULT 30n: HIGH GAS PRESSU-

FAULT 30i: LOW OIL PRESSU-

FAULT 30h: HIGH OIL PRESSU-

FAULT 30g: BOTH FUELS SE-

FAULT 29s: OTHER INTERLOCK-

FAULT 29r: AUX INTERLOCK

FAULT 29q: AUX INTERLOCK

FAULT 29o: LOW GAS PRESSU-

FAULT 29n: HIGH GAS PRESSU-

FAULT 29i LOW OIL PRESSU-

FAULT 29h: HIGH OIL PRESSU-

FAULT 29g: BOTH FUELS SE-

SEA

#5EA

#4EA

REEA

LECTEA

SEA

#5EA

#4EA

REEA

LECTEA

Fault

String

Code

(Table

21)

Fault Code

(Reg

40001)

197 FAULT 29c: LWCOEA 63

198 FAULT 29b: AUX LIMIT #2EA 18

199 FAULT 29a: AUX LIMIT #1EA 17

200

201

202

203 FAULT 23p: AIRFLOW SWITCHEA 13

204

205

206 FAULT 23m: ATOMIZING SWEA 14

207 FAULT 23k: LOW OIL TEMPEA 62

208 FAULT 23j: HIGH OIL TEMPEA 44

209

210

211

212 FAULT 23f: FUEL SELECT OFFEA 38

213 FAULT 23e: AUX LIMIT #3EA 19

214 FAULT 23d: HIGH LIMITEA 42

215 FAULT 23c: LWCOEA 63

216 FAULT 23b: AUX LIMIT #2EA 18

217 FAULT 23a: AUX LIMIT #1EA 17

218

219

220

221 FAULT 22p: AIRFLOW SWITCHEA 13

222

223

224 FAULT 22m: ATOMIZING SWEA 14

225 FAULT 22k: LOW OIL TEMPEA 62

226 FAULT 22j: HIGH OIL TEMPEA 44

227

228

229

230 FAULT 22f: FUEL SELECT OFFEA 38

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

FAULT 23s: OTHER INTERLOCK-

FAULT 23r: AUX INTERLOCK

FAULT 23q: AUX INTERLOCK

FAULT 23o: LOW GAS PRESSU-

FAULT 23n: HIGH GAS PRESSU-

FAULT 23i LOW OIL PRESSU-

FAULT 23h: HIGH OIL PRESSU-

FAULT 23g: BOTH FUELS SE-

FAULT 22s: OTHER INTERLOCK-

FAULT 22r: AUX INTERLOCK

FAULT 22q: AUX INTERLOCK

FAULT 22o: LOW GAS PRESSU-

FAULT 22n: HIGH GAS PRESSU-

FAULT 22i: LOW OIL PRESSU-

FAULT 22h: HIGH OIL PRESSU-

FAULT 22g: BOTH FUELS SE-

SEA

#5EA

#4EA

REEA

LECTEA

SEA

#5EA

#4EA

REEA

LECTEA

Fault

String

Code

(Table

21)

63 320011007

Page 64

Fault Code

(Reg

40001)

231 FAULT 22e: AUX LIMIT #3EA 19

232 FAULT 22d: HIGH LIMITEA 42

233 FAULT 22c: LWCOEA 63

234 FAULT 22b: AUX LIMIT #2EA 18

235 FAULT 22a: AUX LIMIT #1EA 17

236

237

238

239 FAULT 21p: AIRFLOW SWITCHEA 13

240

241

242 FAULT 21m: ATOMIZING SWEA 14

243 FAULT 21k: LOW OIL TEMPEA 62

244 FAULT 21j: HIGH OIL TEMPEA 44

245

246

247

248 FAULT 21f: FUEL SELECT OFFEA 38

249 FAULT 21e: AUX LIMIT #3EA 19

250 FAULT 21d: HIGH LIMITEA 42

251 FAULT 21c: LWCOEA 63

252 FAULT 21b: AUX LIMIT #2EA 18

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

FAULT 21s: OTHER INTERLOCK-

FAULT 21r: AUX INTERLOCK

FAULT 21q: AUX INTERLOCK

FAULT 21o: LOW GAS PRESSU-

FAULT 21n: HIGH GAS PRESSU-

FAULT 21i: LOW OIL PRESSU-

FAULT 21h: HIGH OIL PRESSU-

FAULT 21g: BOTH FUELS SE-

SEA

#5EA

#4EA

REEA

LECTEA

Fault

String

Code

(Table

21)

Fault Code

(Reg

40001)

253 FAULT 21a: AUX LIMIT #1EA 17

254 FAULT 10z: OTHER PREIGN ILKEA 75

255 FAULT 10y: VALVE CLOSUREEA 109

Table 22. 7800 SERIES Fault Codes.

Fault Message

(NOTE: FAULT n: is not in

the Fault and Strings Code)

Fault

String

Code

(Table

21)

7800 SERIES Burner Control Fault History Records

Table 23 describes the registers that are part of a fault history record. To determine the actual register address for a parameter within the record, add the register offset to the start address of the record.

Off-

Parameter

set

Name

0 Fault code R U16

1 Fault String R U16

Sequence

State

First line mes-

sage

Second line

message

Sequence

time

6-7 Total cycles R U32 8-9 Total hours R U32

Table 23. Fault History Record Format.

Ac-

Format

Notes

cess

See Table

R U16

See Table

R U16 Seconds.

22.

21.

20.

21.

For More Information

The Honeywell Thermal Solutions family of products includes Honeywell Combustion Safety, Eclipse, Exothermics, Hauck, Kromschröder and Maxon. To learn more about our products, visit ThermalSolutions.honeywell.com or contact your Honeywell Sales Engineer.

Honeywell Process Solutions

Honeywell Thermal Solutions (HTS) 1250 West Sam Houston Parkway South Houston, TX 77042

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Honeywell S7800A2142 4-Line LCD User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

SPECIFICATIONS

INSTALLATION

WIRING

TROUBLESHOOTING

APPENDIX A: DISPLAY SETUP

APPENDIX B: BURNER CONTROL COMMISSIONING

APPENDIX C: DIAGNOSTICS

APPENDIX D: ANNUNCIATOR TERMINAL MESSAGES

APPENDIX E: MODBUS FUNCTION