Carlin 70200 User manual

Model 70200
Universal Oil
Primary Control
Installation and
Operating Instructions
For Use By Qualified Service Technicians Only
It is important that the installation of the oil burner,
piping and fittings, safety devices, controls, electrical
wiring and equipment be done in accordance with
national and/or local regulations of the authorities
having jurisdiction over such installation.
126 Bailey Rd North Haven, CT 06473
Ph 203-680-9401 Fx 203-680-9403
Tech Support 800-989-2275 carlincombustion.com
©Copyright 2023 — Carlin Combustion Technology
Carlin Combustion Technology
• Universal Replacement – for Carlin,
Beckett, Honeywell and ICM Controls
• Includes patented Smart Ignition
feature
• On-Board LCD Screen – no special
tool needed
• Optimized for performance with all
fuel blends, including B100
• Fully Programmable Settings
• 32 Cycle Fault History
• Alarm Contacts
• Communications Port
• Serviceman Reset Protection
• Blocked Vent Protection
• Built-in Pump Prime
• Recessed Spade Connectors
• Provides CAD Cell Reading in OHMS
Power input
(red/white wire) ................................ 120 VAC, 60 HZ, 9 VA
Limit circuit input
(black wire) .............................................. 120 VAC, 60 HZ
Motor load
(orange wire).........10 FLA / 60 LRA (reduce by valve load)
Ignitor load
(blue wire) .................................... 120 VAC, 60 HZ, 500 VA
Valve load
(violet wire).......................................... 120 VAC, 60 HZ, 2A
Vent load................................................................. 0.1 amp
Line heater ................................................................ 1 amp
Alarm contacts (dry contacts)....................24V, AC/DC, 2A
Operating temperature limits ..................+32°F to +140°F
Storage temperature limits...................... -40°F to +185°F
Thermostat anticipator current..........................0.1 A, AC
Agencies.............................. UL recognized (US & Canada)
Patent No. 10,529,191

2
Carlin Combustion Technology MN70200B 101323
WARNINGS
1. Warning – Do not attempt to confirm combustion simply by inspecting the flame visually. You must use combustion test instru-
ments. Failure to properly verify/adjust combustion could allow unsafe operation of the burner, resulting in severe personal injury,
death or substantial property damage. Refer to the burner manual for proper setup instructions.
2. Warning – Never test an ignitor by placing a screwdriver (or other metallic object) across the high voltage clips. Check ignitors only
by observing spark at appliance ignition electrodes, with fuel supply OFF. Using any other method could cause ignitor damage and
severe personal injury.
3. Danger – Fire, explosion, or carbon monoxide hazard. Water damage can lead to unreliable operation or cause the control to
malfunction which could lead to severe personal injury or death. Do not install the control module where it can get wet. Always
replace the control if it gets wet or if it has any signs of water residue.
4. Warning – Electrical shock hazard. To prevent electrical shock, death, or equipment damage, disconnect power supply before
installing or servicing control. Only qualified personnel may install or service this control in accordance with local codes and ordi-
nances. Read instructions completely before proceeding.
5. Warning – Electrical shock hazard. The ignition circuit of the control can produce over 10,000 volts which can cause severe injury
or death.
6. Warning – Frozen pipes/water damage. Central heating systems are prone to shut down as a result of power or fuel outages,
safety related fault conditions or equipment failure. Installation of freeze protection monitoring or other precautions are recommend-
ed for unattended dwellings in climates subject to sustain below—freezing temperatures.
7. Warning – All work must be performed by a qualified and licensed professional in accordance with all applicable codes and ordi-
nances.
8. Notice – Read these instructions completely before proceeding with the installation.
9. Notice – Retain these instructions for future reference.
10. Notice – All wiring must comply with the National Electric Code or any other state or local codes or regulations.
Hazard Definitions
The following defined terms are used throughout this manual
to bring attention to the presence of hazards of various risk
levels or to important information concerning the life of the
product.
Indicates presence of hazards that will
cause severe personal injury, death or sub-
stantial property damage.
Indicates presence of hazards that will
cause severe personal injury, death or sub-
stantial property damage.
Indicates presence of hazards that will
cause minor personal injury or property
damage.
Indicates special instructions on installation,
operation or maintenance that are important
but not related to personal injury or property
damage.
FROZEN PIPES/WATER DAMAGE
This is not a freeze protection device. Suitable freeze protection monitoring or other precautions are recommended to protect against
ruptured pipes/water damage caused by fuel outage, safety related fault conditions or equipment failure.

3
Carlin Combustion Technology MN70200B 101323
Installing and Wiring
The 70200 control must be installed and serviced only by a qualified service technician.
Do not connect an external voltage to the thermostat terminals T1 and T2. This will damage the control
and may result in a dangerous operating condition
Always disconnect power source before wiring to avoid electrical shock or damage to the control. All wiring must
comply with applicable codes and ordinances.
Mounting
The control may be mounted on a 4" x 4" junction box in any convenient location on the burner, furnace or wall. The
location must not exceed the ambient temperature limit, 140°F.
Wiring
Wiring must comply with local and national electrical codes, and with the following wiring diagrams.
6-Wire
Recommended
Wiring
3-Wire
Replacement
Wiring
When con-
necting to BLACK power
harness wire, without
constant L1 power, wire
nut together L1 (RED)
and Limit In (BLACK)
from control.
M
OV
OIL
VALVE
IGNITION
NOZZLE
LINE HTR
(OPTIONAL)
WHT
WHT
WHT
WHT
BLUE
ORANGE
VIOLET
BURNER
MOTOR
GN
WHT
RED/WHT
BLACK
RED/WHT
WHT
WHT
M
IGNITION
ORANGE
BLUE
BURNER
MOTOR
WHT
RED
WHT
BLK
GN

4
Pressing the Ebutton again will leave the setting as is and
move to the next option –
To Change a Setting: Scroll to the desired Setting Mode
option using the Ebutton (as described in table on page
5), then press the or Hbutton to scroll through the avail-
able Settings. When the desired setting is displayed on the
screen press the E/ ENTER button. The display will briefly
indicate that the new setting has been “Entered” and the new
setting will replace the previous setting on the second line of
the screen. Continue pressing the Ebutton to view the cur-
rent setting for all options or Hbutton to make any desired
changes.
To Exit the Setup Menu: Press the F/ ESCAPE button for 3
seconds. NOTE: The control will automatically exit the Setup
menu after 30 seconds of inactivity or by a call for heat.
Initial Start-up/Power-up
When powered-up for the first time, the control will display
a scrolling message “Does Burner Have A Solenoid Valve?”.
Press Gfor Yes or Hfor No. This information is needed for
proper operation of the control. NOTE: The control will not
operate until this question is answered.
“Does Burner Have Solenoid Valve” will scroll on screen.
NOTE: This selection can be changed in the Settings Mode
(see below for how to change settings)
View or Change Control Settings
NOTE: The settings mode cannot be accessed during a run
cycle, the burner must be in standby mode (or lockout) to
enter setup.
To enter the Settings Mode:Press the Gand Ebuttons
simultaneously for 2 seconds. The display will show –
Carlin Combustion Technology MN70200B 101323
Trial for Ign
15 Seconds
Programmable*
Dry
Contacts
*See page 5 for
programming details.
Do not start the burner if the combustion chamber contains oil or oil vapor.
Trial for Ign
30 Seconds
Does Burner...
Press =No =Yes
Settings Press
To Exit Hold
To View Current Settings: Press the Ebutton to scroll
through all Setting Modes (see table at the top of page 5 for
Setting Mode options). The second line of the screen will
display the current setting for each Setting Mode –
Pre-Purge
30 Seconds
SOLENOID
T-T terminals are designed to accept a jumper or dry thermostat contacts only. Applying a 24 VAC source directly to
the T-T terminals will cause permanent damage to the control.

5
Carlin Combustion Technology MN70200B 101323
PRESS THE BUTTON TO VIEW DIFFERENT SETTING MODES
Pre-Purge* Trial for
Ignition Post-Purge Flame Stabilize
CAD
Ohms
Max
Ignition
Type
TT
Jumpered
Internally**
Vent
Input
Allowed
Recycles
Alarm
Contacts
Clear
Fault
History
Restore
Factory
Defaults
PRESS THE
BUTTONS
TO
CHANGE
SETTINGS
No Valve 10 Sec†† 0 Sec 5 Sec 3300 Interrupted Yes Not Used None N/O Yes Yes
0 Sec†15 Sec 10 Sec 10 Sec 5300 Smart Ign No Intake 3 N/C No No
3 Sec†30 Sec 15 Sec 15 Sec 7200 Intermittent Exhaust
10 Sec 45 Sec 30 Sec 30 Sec
15 Sec 2 min 45 Sec
30 Sec 5 min
60 Sec 15 min
2 min
Shaded box = default setting; CAD Ohms Max default is application dependent.
**When selecting “No” valve during initial startup, “Pre-Purge” will be set to “No Valve” and “Post-Purge” will be set to “0 Sec”.
**Changing this setting to ‘Yes’, with limits powered will exit Settings mode and result in immediate ‘Call For Heat’.
*†
If flame is sensed during Pre-Purge, control will lockout immediately (except when Pre-Purge is set to 0 or 3 seconds).
††A 10 second TFI is recommended for commercial burners 7GPH and larger.
AVAILABLE SETTINGS
Setup Menu Definitions
•Pre-Purge: Time period motor is on prior to Trial for Ignition. This
setting is often referred to as “valve delay on”. Note: If flame is
sensed during Pre-Purge, control will lockout immediately (except
when Pre-Purge is set to 0 or 3 seconds).
• Trial for Ignition: Flame-establishing period during ignition.
45 sec TFI up to 3 GPH
15 sec TFI up to 19.9 GPH
• Post-Purge: Time period the motor is on after the Call for Heat is
satisfied to allow for evacuation of combustion gases. This setting
is often referred to as “motor delay off”. A call for heat during Post-
Purge will result in a recycle. Note: If Pre-Purge is set to “0 Sec-
onds” or “No Valve”, Post-Purge can only be set to “0 Seconds”.
• Flame Stabilize: The time period after Trial for Ignition that the
ignitor remains on to stabilize flame.
• CAD Ohms Max: The maximum Ohms range that the control will
allow the burner to operate.
• Ignition Type
Interrupted: Spark is turned off after Flame Stabilization period.
Smart Ignition: If flame is lost at any time after the Flame
Stabilization period, the control will recycle (60 - 65 seconds).
Following this recycle, the control will operate in Intermittent
Duty mode (ignition on throughout the call for heat) for 5 heat
cycles. Following these five cycles, the control will revert back to
Interrupted Duty and will remain in Interrupted Duty until another
recycle event occurs. If control recycles and operates in Inter-
mittent Duty three consecutive times, on a fourth consecutive
recycle the control will lockout, due to hitting smart ignition limit,
displaying “15 max smart ign”
Intermittent: Spark remains on during call for heat.
• TT Jumpered: Allows TT to be “jumpered” by software program.
• Vent Input: Applicable only to applications equipped with a combus-
tion air proving switch (Intake) or a blocked vent switch (Exhaust):
Intake: When the burner is equipped with a combustion air
proving switch, the “Intake” setting should be selected. At
each burner startup, the control will check the air intake during
pre-purge (Valve On Delay)*. If the air is blocked, the control will
abort pre-purge and shutdown the burner. If the air intake is not
blocked during this startup test, but becomes blocked during
normal burner operation, the burner will shut down if the air
remains blocked for 20 seconds. Following any shutdown, the
burner will be permitted to recycle 3 times following a 1 minute
delay. Lockout occurs if the blockage persists throughout 3
recycles during any single call for heat.
*If “no valve” is selected in setup, the air intake cannot be
checked prior to TFI. In this case, the burner will only shut
down following the 20 second blockage described above. For
all burners with valves, Valve Delay settings of less than 15
Seconds will be automatically changed to 15 Seconds to allow
for the prepurge test.
Exhaust: When the appliance is equipped with a blocked vent
switch, the “Exhaust” setting should be selected. If a blocked
vent is detected during burner startup, the Pro X 70200 control
will NOT respond to the blocked intake vent until 30 seconds
after the ignition sequence is complete (following Flame Sta-
bilization), if the vent remains blocked at that time, the burner
will shutdown and lockout. If the vent is not blocked during
this startup test, but becomes blocked during normal burner
operation, the burner will shut down and recycle, depending on
the Allowed Recycles selected. Lockout occurs if the blockage
persists and the Allowed Recycles setting is reached during any
call for heat.
NOTE: If the Pro-X 70200 is being connected to both a com-
bustion air proving switch and blocked vent switch, call Carlin
Technical Support for assistance.
• Allowed Recycles: Number of Recycles allowed during a single
Call for Heat prior to lockout.
• Alarm Contacts: Option to choose N/O (Normally Open) or N/C
(Normally Closed)
• Clear Fault History: Allows all prior burner fault conditions stored
in control to be cleared.
• Restore Factory Defaults: Allows all factory defaults to be
restored in control (refer to settings shaded in gray in the table
above). Will reset and reboot control and require answer to “sole-
noid valve” question at startup.
Per UL requirements, the control will not turn on if the
cad cell senses flame (light) during the self-test. If the
cad cell sees flame, the control will remain in self-test
mode until the cad cell no longer senses flame.
SETTING
MODE
OPTIONS

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Carlin Combustion Technology MN70200B 101323
Status Icons
Status Icons will appear at the top of the 70200 display to indicate the control’s current operating condition.
POWER Indicates that the control is powered (flashes if voltage is too low or too high)
TT Displayed when the TT terminals are physically jumpered, jumpered in the set-up menu, or when thermostat
is calling for heat.
LIMIT Indicates that the burner limit circuit is powered.
IGNITOR Indicates that the ignitor is energized (flashes if ignitor not detected)
MOTOR Indicates that the motor is energized (flashes if motor not detected)
VALVE Indicates that the valve is energized (on entry to pump prime will flash if not detected)
BV Indicates vent input is active (when vent input is selected)
FLAME Indicates the CAD cell is sensing flame
Operating Sequence
With power to the control and all manual oil line valves open,
set thermostat (and limit) to call for heat. NOTE: The ther-
mostat circuit must be closed and power must be coming to
black wire from limit circuit.
Following a Pre-Purge, the control advances to Pre-Ignition.
If Pre-Purge timing is programmed above 3 seconds, control
will perform a “Valve Check” 1 second after motor starts to
check for a stuck open valve. If flame is detected during this
time, control will lockout. NOTE: For the Pre-Purge to oper-
ate, the burner must be equipped with a solenoid valve that is
wired to the violet terminal.
Control will enter Pre-Ignition*. After set timing, valve opens
and the control advances to Trial for Ignition when the count-
down clock expires.
*If Pre-Purge is set to “0” or “3”, control will enter “pre-igni-
tion” before “Pre-Purge”.
Following a 1 second delay, Trial for Ignition will initiate. The
CAD cell must sense flame or the control will go into lockout.
When flame is detected, the screen will briefly display “Flame
Detected” and then advance to “Flame Stabilization”.
NOTE: Push View Ohms button anytime during burner opera-
tion to view the CAD Ohms reading.
When the Flame Stabilize timer expires, the ignitor will turn
off and the burner will continue to fire until the Call for Heat
ends or the limit string opens. The screen will display “Burner
Running”. Note: If Smart Ignition is selected in the Setup
Menu, the screen will alternate between “Burner Running”
and “Smart Ign Active” at any time the ignitor is running in
intermittent mode.
When the Call for Heat ends (or a limit control interrupts the
burner circuit), the oil valve (if installed) will turn off within
2 seconds. The motor remains on for the Post-Purge period.
If controls gets a call for heat during Post Purge, control will
immediately enter Trial for Ignition to relight the burner. When
the Post-Purge timer expires, the control returns to Standby
mode awaiting the next call for heat.
Pre-Ignition
X X Sec
Pre-Purge
X X Sec
Trial for Ign
X X Sec
Post-Purge
X X Sec
Flame Stabilize
X X Sec
Standby 5 9 Sec
No Call for Heat
Burner Running
5 9 Sec
Pump Prime (Bleeding)
The 70200 control is equipped with a 120 second pump
prime feature. To enter Pump Prime, there must be a Call for
Heat. NOTE: If a flame is present, the control will not enter
Pump Prime mode.
To bleed the oil line, with Limit icon on, push and hold red Reset
button for 10 seconds. The display will read Pump Prime.
The motor, valve and ignitor remain on for up to 2 minutes
while in Pump Prime mode. To end Pump Prime mode, press
the red Reset button. NOTE: If flame is sensed, Pump Prime
mode ends in 5 sec.
Pump prime cannot be entered when the control is in Lockout
or Latch-up.

7
Fault History
The 70200 stores information from the last 32 cycles in which
a fault condition occurred. To Enter the Fault History , simul-
taneously press and hold the Hand E buttons for 2 seconds.
The display below will appear –
Press the E button to scroll through the history of fault
conditions. Fault 1 is the most recent cycle in which a fault
occurred. To view faults experienced in earlier run cycles,
continue to press the E button. The control will display Fault
2 followed by Fault 3, etc.
To view the details of any fault (ex. Fault 1 in the screen
above), press the Hbutton to see the Fault Message.
Press the Hbutton again to determine how many cycles ago
the fault occurred.
Press the Hbutton again to determine if the fault resulted in a
lockout or a recycle.
Press the Hbutton again to examine the Ohms at the time of
the fault.
View 13 Faults
To Exit Hold
Total History
To Exit Hold
Carlin Combustion Technology MN70200B 101323
Fault 1 Message
No Flame Check Vlv
Fault 1
X X X X cycles ago
Fault 1 Result
Lockout
Fault 1
CAD XXXXX Ohms
Continue pressing the Hbutton to examine the following
information recorded during the fault cycle.
• Line Voltage
• Motor Amps (OK or Low)
• Ignitor Amps (OK or Low)
• Valve Amps (OK or Low)
• Recycle (Yes or No)
• Burn Time
• Flame Delay
On any fault detail screen listed above, the Ebutton can be
pressed to view the same data in the previous fault cycle. For
example, if in Fault 1 (the most recent fault), the Ignitor Amps
were low, by pressing the Ebutton, the Ignitor Amps in Fault
2 (the previous fault cycle) will be displayed.
To Exit Fault History: Press and hold the F/ ESCAPE but-
ton for 3 seconds at any time.
Total/Run History
In addition to the Fault History (left),the 70200 also logs the
total run history of the control. To enter this menu, simultane-
ously press the Eand F buttons for 3 seconds. The display
below will appear.
To Exit Total History: Press and hold the / ESCAPE but-
ton for 3 seconds at any time.
Press Hbutton to scroll through the history which includes:
• Total On Time • Max Line Volts
• Total Burn Time • Min Line Volts
• Total Burner Run Cycles • Total Recycles
• Faults Cleared (cycles ago)
Fault 1 Details
View Fault 2
PRESS THE BUTTON TO VIEW NEXT FAULT
FAULT 1 FAULT 2 FAULT 3 FAULT 4 FAULT 5
PRESS THE
BUTTONS
TO
VIEW
FAULT
DETAILS
Message No Flame ck vlv No Flame ck mtr No Flame ck ign No Flame ck vlv No Flame ck vlv
Cycles Ago 23456
Result Lockout Lockout Lockout Lockout Lockout
CAD Ohms 999999 3300 2500 1500 1500
Line Volts 114 114 114 114 114
Motor Amps OK Low OK OK OK
Ignitor Amps OK OK Low OK OK
Valve Amps Low OK OK Low Low
Recycle Y/N No No No No No
Burn Time 16 sec 16 sec 16 sec 16 sec 16 sec
Flame Delay 15 sec 15 sec 15 sec 15 sec 15 sec
FAULT
HISTORY
NOTE: Fault information in chart
is representation only.

8
Service and Troubleshooting
Last Fault Display: When the control is reset from a lockout
condition, if the burner resumes normal operation, the screen
will toggle the last fault and its cause for five days (longer du-
ration if control is not wired for constant power). This feature
is designed to allow the service technician to easily see what
caused the condition in the event the homeowner reset the
control prior to his arrival. The screen will alternate between
displaying what the last fault was and displaying how to clear
the message hold ESC for 3 seconds.
Display Voltage and Current: Press + for 3 seconds to
display real time voltage and current.
Lockout: If lockout occurs, the screen turns on, the appropri-
ate status icon flashes and a fault message is displayed on
the screen. To Reset Push in and hold the red Reset button
for 1 second, then release. NOTE: Recycling power to the
control will not reset it from a lockout condition.
Two fault conditions result in an immediate lockout. These
include; Flame detected during pre-purge and flame failure
during Trial for Ignition. All other faults will result in a Recycle
(unless the Allowed Recycles is set to ‘None’ in the Set-up
Menu). A Recycle results in the burner shutting down for 60
seconds then resuming operation in Standby (if there is no
Call for Heat) or initiating the Operating Sequence above (if
there is a Call for Heat).
Latch-up: If the control locks out 3 times during a single Call
for Heat, Latch-Up will be displayed on screen.
To Reset the control after latch-up, press and hold the red
Reset button for 30 seconds. WARNING: Only a qualified
service technician should attempt to reset the control
after latch-up. The problem that caused the repeat lock-
outs must be corrected before returning the burner to
normal operation. NOTE: Recycling power to the control will
not reset it from a latch-up condition.
Burner will not fire
• Check line voltage to the control (at least 102 vac).
• Check all electrical connections.
• Is CAD cell seeing light?
• Light is leaking into the burner housing
• CAD cell is defective
• There is a problem with the CAD cell wiring or holder
• If appliance was recently shut down, CAD cell may see
residual hot spots in chamber. To troubleshoot, press the G
button to display cad cell Ohms. Dark resistance should be
over 50,000 ohms and room light resistance (control flipped
open) should be less than 10,000 ohms. Replace cell if
necessary, or reinstall and close the burner housing. Check
for stray light by measuring the CAD cell resistance looking
into the inactive combustion chamber. It should read greater
than 50,0000 ohms.
Other no start problems:
• Valve lead voltage on too early. Correct bad connection.
• Motor relay welded. If valve has no voltage, and line voltage
is okay (102 - 132 VAC), the issue is a welded motor relay.
Replace the control.
• Motor current less than 0.2 Amps.
Blocked vent – not recycling:
• Recycle only works on non-manual reset vent switch
Repeated flame failures
• CAD cell is defective. Replace.
• Air leaking into oil line causing flame out – check oil line
connections and filter gasket.
• Defective nozzle causing flame to be erratic – change
nozzle.
• Excessive airflow or draft causing flame to leave burner
head. Check for proper air band setting and draft.
• Excessive back pressure causing flame to be erratic –
check appliance and flue for sooting/plugging.
Control locks out at end of TFI
• No oil to burner – check oil supply, filters, lines.
• Shorted electrodes – inspect for cracked porcelain and
replace as needed.
• Poor spark – check electrode spacing and condition per
burner manual. Replace or realign if necessary.
• Nozzle clogged – replace nozzle.
• Airflow too high – check air band setting.
• Ignitor module defective – replace if no spark.
• CAD cell defective.
• Oil valve (if used) stuck in closed position.
• Check wiring connections.
• Maxed out Smart Ignition cycles – check combustion ohms,
vacuum (oil supply), draft
Amps = 7 mA
Line = 115 VAC
Toggle
Last Fault
No Flame Chk Ign
To Clear Message
Hold 3 Sec
Carlin Combustion Technology MN70200B 101323

9
Message Guide
Carlin Combustion Technology MN70200B 101323
Error/Status Message Explanation What to Check
Motor Safety On • Bad motor or dead short
• Welded relay contacts
• Check voltage at the time of the fault
• If control will not reset replace the control
Flame Detected • CAD cell seeing light
• Short in cad cell harness
• Check CAD cell ohms in darkness
• Check ohms on the cad cell harness
Motor Output On • Bad motor or dead short
• Welded relay contacts
• Low voltage issue
• Check the motor for internal failure or dead
short
• Replace control
No Call for Heat • No call for heat, control in standby
Pump Prime • Reset button has been depressed for 10 seconds • Check reset button
No Flame • Flame expected, but not detected
• Motor, Valve and Ignitor current readings are all above
the minimum
• Check CAD cell ohms in fault history
• Ohms above tolerance setting
Recycle Limit • Control lockout due to reaching programed recycle
limit
• Check for high vacuum
• Ensure oil supply sufficient
• Burner coupling slipping
• Poor flame retention
Low Line Volts • Input voltage below 98 AC • Check line voltage
High Line Volts • Input voltage over 140 AC • Check line voltage
Blocked Intake • Control lockout due to CAP System/air intake blocked •
Check outdoor termination point or air intake
for obstruction
• Check length of intake pipe for damage/
obstruction
Blocked Exhaust • Control lockout due to exhaust vent blocked • Check vent/flue pipe for obstruction
• Check chimney for blockage
• Check blocked vent switch (if equipped)
No Flame, Valve
Current Low
• Control lockout due no flame and low valve power • Check valve connection and functionality
No Flame, Motor
Current Low
• Control lockout due no flame and valve & ignitor power
are good, but motor power is low
• Check motor connection and functionality
• Check voltage at time of fault
• Check motor running amps
No Flame, Ignitor
Current Low
• Control lockout due no flame and valve power is good,
but ignitor power is low
• Check ignitor connection and functionality
No Limit In • No power detected on limit input • Check limit input wiring
FlameLate Ck Cad • Flame not seen within first 5 seconds of TFI
• Delayed ignition
• Check electrode setting
• See other No Flame causes
Ohms Low Ck Cad • CAD cell seeing unexpected light • Check CAD cell, CAD cell holder, harness
wires
Ohms High Ck Cad • Flame is seen, but Ohms high, flame loss potential • Check combustion set-up
• Losing flame retention
• High draft or vacuum
Reset Stuck • Reset button held for too long (>10 seconds) • Ensure reset button not being pressed/
stuck
Replace Control • Fatal control condition • Replace control
Lost Flame • Flame lost during normal operating sequence • Check CAD cell ohms while the burner is
running
• Check combustion set-up
• Oil line/supply issue
• High vacuum or draft
Flame @ Preignit • Unexpected flame during pre-ignition • Stuck valve
• RF interference/AC line noise
• Are tabs properly aligned with electrodes
Continued on next page

10
Carlin Combustion Technology MN70200B 101323
Message Guide (continued)
Error/Status Message Explanation What to Check
Loss of Flame,
Post Purge
Control lost flame and entered post purge, followed by
Recycle
• Check CAD cell ohms while the burner is
running
• Check combustion set-up
• Oil line/supply issue
• High vacuum or draft
No Flame; High
Motor Current
Lockout due to no flame + motor current not dropping
below 50% from it’s peak startup reading
• Check Motor
• Check Pump