7800 SERIES S7800A2142 4-Line LCD Keyboard Display Module PRODUCT DATA The S7800A2142 is required to program the Valve Proving feature of selected 7800 Series devices.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module • Device type. • Flame amplifier type. • Flame failure response time (FFRT). • Manufacturing code. • On-Off status of all digital inputs and outputs. • Prepurge time • Postpurge time • Valve Proving mode • Valve Proving time • Software revision and version of 7800 SERIES. • Relay Module and KDM. • Status of configuration jumpers. • Status of Run/Test Switch.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Temperature Mounting KDM on 7800 SERIES Relay Module. 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) 1.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module (b) Remote Reset leadwires: The maximum length wire is 1000 ft (300m) to a Remote Reset pushbutton.
800 SERIESS7800A2142 4-Line LCD Keyboard Display Module PC/PLC + A B GND C MOMENTARY PUSHBUTTON SWITCH RS-485 BUS 2 3 4 5 1 2 3 4 5 A B C (GND) +13 VDC 6 RESET 1 RM78xx SERIES DEVICE WITH S7800 SERIES 5 OR GREATER DISPLAY. MOMENTARY PUSHBUTTON SWITCH 1 2 3 4 5 1 2 3 4 5 A B C (GND) +13 VDC RESET 6 RM78xx SERIES DEVICE WITH S7800 SERIES 5 OR GREATER DISPLAY. 1 1 MULTI-DROP RS-485 COMMUNICATION BUS.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module doesn’t make sense for the button action, selecting the button is ignored. KEYBOARD BUTTONS Fig. 5. S7800 Keyboard Display Module Fig. 6. Keyboard buttons. Keyboard Functions 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).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Home Page GO TO LOCKOUT DETAIL 4 LINES 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: Fig. 8.
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 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Sequence Status 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 additional 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.
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.
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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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 GO TO LOCKOUT DETAIL DESCRIPTION STATE AT TIME OF FAULT 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code Fault 2 *AC Frequen/ Noise* Fault 3 *AC Line Dropout* Fault 4 *AC Frequency* Fault 5*Low Line Voltage* System Failure Excess noise or device running on slow AC. AC line dropout detected. Device running on fast AC. 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure Fault 12 *Lockout ILK On* Fault 13 *Airflow Sw. On* Lockout Interlock powered at improper point in sequence. Combustion airflow interlock fault during STANDBY. 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure 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 Start Switch was on Fault 27 that the switch contacts are free of contaminants. during PREPURGE *Start Switch Reset and sequence the relay module to PREPURGE; set the (RM7838A, RM7838B On* Run/Test Switch to Test. only).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure Fault 32 *Air- Combustion Airflow flow Switch* Interlock fault. Fault 33 Pre-Ignition interlock *Pre-Ignition fault. ILK* CTL input was energized at the wrong time Fault 34 for the relay module. *Control On* This fault implies a field wiring error. Safety relay was off Fault 35 when it should be on or *Call Service* a fuse has blown. Main valve terminal Fault 36 was off when it should *Call Service* be on.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure Fault 45 Low Fire Interlock *Low Fire Sw. switch failure to close Off* 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 Fault 46 *Flame Amp b. A standard amplifier Type* 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code Fault 50 *Jumpers Wrong* System Failure The sequence logic detected a combination 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 when both are clipped (RM7888 only). Inspect the jumpers and refer to the installation instructions for compatible jumper configurations. Make sure that clipped jumpers are completely removed.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure Inspect the Prepurge Fan Switch terminal 18 and the connecPurge Fan Switch is off tions. when it should be on Make sure the switch is working properly. Reset and sequence (Fulton pulse only). the relay module. If the fault persists, replace the relay module. Flame is indicated Fault 58 by both the combus*Combustion tion pressure and the pressure/ flame amplifier when Flame* it should be off (Fulton pulse only).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code System Failure Flame Indication Fault 75 Feedback (terminal 21) *Flame either on when it should Proven Feedbe off or off when it back* should be on. Faults 76–87 Lockout requested by *Accessory ControlBus module. Fault* Fault 88 *Accessory Fault* Fault 89 *Accessory Fault* Fault 90 *Accessory Fault* Faults 91-93 *Accessory Fault* Fault 94 *Call Service* T17 powered without Valve Proving feature setup.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code Fault 103 *Postpurge EEPROM error* Fault 104 *Valve proving (VP) configuration error* Fault 105 *Call Service* Fault 106 *Relay module self-test failure* System Failure Postpurge configuration in EEPROM is not initialized or is corrupted. Enter Setup and re-commission Postpurge settings. If the fault persists, replace the relay module. Invalid valve proving Enter Setup and re-commission Valve proving settings. configuration detected.
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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module EDIT LINE 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”.
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.
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”.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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 COMMAND LINE Fig. 52. Annunciator custom messages setup On the text edit line (see Fig.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fig. 57. Display inactivity 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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Description Burner control T9 terminal I/O state. Selectable Message/Display Possible States/ Range (Terminals) Comments ON or OFF Indicates if input is on or off, energized or de-energized. Burner control T10 T10 terminale terminal I/O state. ON or OFF Indicates if input is on or off, energized or de-energized. Burner control T16 T16 terminale terminal I/O state. ON or OFF Indicates if input is on or off, energized or de-energized.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Description Selectable Message/Display Amplifier Flame Failure Response Time (FFRT) in seconds. Timing value of purge Purge time card. Postpurge time (enManu code hanced models only). Software revision SW revision of burner control module. Current annunciator Annun status status. Annunciator Proof of T4 Proof of closuref closure. Annunciator Valve f T5 Valve closure closure. Annunciator OperatT6 Op controlf ing control.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module d • • • f 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 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).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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.
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).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module • 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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 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”.
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.
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.
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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Message Group Message Number Standard Standard 4 5 Standard 6 Standard 7 Standard 8 Standard 9 Standard 10 Standard 11 Standard 12 Standard 13 Standard 14 Standard 15 Standard 16 Standard 17 Standard 18 Standard 19 Gas Standard 19 Oil Standard 20 Standard 21 Standard 22 Fixed Fixed Fixed Fixed Fixed Fixed 23 24 25 26 27 28 Fixed 29 Fixed 30 Fixed 31 Fixed 32 Fixed 33 Fixed 34 Fixed Fixed 35 36 F
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. Slave Address 01 Function Code Starting Address High Starting Address Low Number of Addresses High Number of Addresses Low 03 or 04 00 0A 00 01 CRC CRC A4 08 Table 9. Query Message Format for Function Codes 3 and 4.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Address (hex) Register (dec) Parameter Name Read/ Write Format Notes 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).
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Address (hex) 01BA Register (dec) 40443 Parameter Name Read/ Write Device Data Ready Format U16 S7800 Device Compatibility with Current Software Revision 01BB 40444 U16 S7800 Software Revision Compatibility with Legacy Software Revisions. 01BC 40445 Modbus U32 Endian Notes Device data was properly received by S7800.
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.
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.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module String 7800 Code RegSERIES Uses ister Sequence Line Line mm:ss 40003 State 1 2 29 30 31 32 33 34 35 36 37 38 39 MAIN IG HOLD: MANUAL-OPEN SWITCH RUN RUN PV HOLD: LOW FIRE SWITCH PVHOLD IGN PV HOLD: PV HOLD SWITCH RUN/LOWFIRE: TEST RUN/TEST SWITCH POSTPURGE STATE UNKNOWN RESET/ ALARM TEST SAFETY START SAFETY1-1 Burner Control State Bits 67 72 4010h 95 0 0020h 96 58 4020h 77 46 77 45 String 7800 Code RegSERIES Uses ister Sequence Lin
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module String 7800 Code RegSERIES Uses ister Sequence Line Line mm:ss 40003 State 1 2 Burner Control State Bits String Code String 25 CIRCUIT FAULT 26 COMB.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module String Code String String Code String 70 MAN-OPEN SW. OFF 115 Operator Control T6 = 1 71 MAN-OPEN SW. ON 116 Interlock T7 = 0 72 MAN-OPEN SW.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module String Code String String Code String 160 Terminal T8 = 0 201 VP SWITCH T16 = 1 161 Terminal T8 = 1 202 MAIN VALVE2 T17 = 0 162 Terminal T9 = 0 203 MAIN VALVE2 T17 = 1 163 Terminal T9 = 1 204 INTRUPTD PV T21 = 0 164 Terminal T10 = 0 205 INTRUPTD PV T21 = 1 165 Terminal T10 = 1 206 DELAYED MV T21 = 0 166 Terminal T16 = 0 207 DELAYED MV T21 = 1 167 Terminal T16 = 1 208 START SW T21 = 0 168 Terminal T17 = 0 209 STAR
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module 13 FAULT 13: AIRFLOW SW. ON Fault String Code (Table 21) 12 59 FAULT 59: CALL SERVICE 14 FAULT 14: HIGH FIRE SWITCH 40 60 FAULT 60: CALL SERVICE 24 15 FAULT 15: FLAME DETECTED 35 61 FAULT 61: MV1 OFF 218 16 FAULT 16: FLAME-OUT TIMER 37 62 FAULT 62: MV2 OFF 219 17 FAULT 17: MAIN FLAME FAIL 64 63 FAULT 63: MV1 ON 220 18 FAULT 18: FLAME DETECTED 35 64 FAULT 64: MV2 ON 221 19 FAULT 19: MAIN FLAME IGN.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module Fault Code (Reg 40001) 163 164 165 166 167 168 169 Fault Message (NOTE: FAULT n: is not in the Fault and Strings Code) Fault String Code (Table 21) Fault Code (Reg 40001) FAULT 32a: AUX LIMIT #1EA 17 74 16 199 FAULT 30s: OTHER INTERLOCKSEA FAULT 30r: AUX INTERLOCK #5EA FAULT 30q: AUX INTERLOCK #4EA FAULT 30p: AIRFLOW SWITCHEA FAULT 30o: LOW GAS PRESSUREEA FAULT 30n: HIGH GAS PRESSUREEA Fault Message (NOTE: FAULT n: is not in the Fault and Stri
Fault Code (Reg 40001) Fault Message (NOTE: FAULT n: is not in the Fault and Strings Code) Fault String Code (Table 21) 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 Table 22. 7800 SERIES Fault Codes.
