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System lockout failure to detect or sustain flame

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SOURCE: MY ADP GARAGE HEATER MODEL CUHN-75A-1 FLASHES CODE

dirty flame sensor try cleaning it or there is air in the line

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SOURCE: i have aan armstrong model uhpa145al-3 commercial

Flame sensor would be my first diagnosis. Take it out and clean it with some emery cloth or some light grit sand paper and put it back in should be fine just needs to be cleaned.

Posted on Jan 21, 2010

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SOURCE: mr heater 45000btu is flashing system lockout

check flame sencor is clean and connections are tight clean ignitor , seeif thie helps or jump out pressure switch see if it lights

Posted on Jan 15, 2011

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1 Answer

What does 3 flashes of the red light mean on an amana model ptc153a35ac ?


Here are your Amana flash codes:
Steady On - Normal
Off Controller Failure

1 System Lockout
2 Pressure Sw stuck closed
3 Pressure SW Stuck Open
4 Open - High Limit
5 Flame sense without gas valve
6 Open rollout or open Fuse
7 low flame signal
8 Check igniter or improper ground
continuous flashing - reversed AC polarity

Sep 11, 2014 | Heating & Cooling

1 Answer

On A.O. Smith water heater model BTH 199 100 where is the heat sensor rod located ?


Parts list:
http://www.hotwater.com/lit/partslists/197728-004.pdf
Flame rod, flame sensor sits next to igniter inside combustion chamber. This can be cleaned with sandpaper. Do not touch with fingers. Purpose of flame rod is to detect whether ignition has caused actual, sustainable fire inside the combustion chamber.
If sensor is bad, or no ignition is detected after 2-3 attempts, then 'no ignition' error is given.
Bad gas control valve, bad-or-dirty flame rod-sensor, low gas pressure, misaligned rod, dirty combustion parts, etc

Service handbook:
http://www.hotwater.com/lit/training/316586.pdf
High gas pressure spikes can daMAGE gas control valve p7

Product manual:
http://www.hotwater.com/lit/im/com_gas/197727.pdf
Word-search for 'failure'
Low gas pressure. p14 and p54
1-3 trials before declaring 'ignition failure. p48
bad flame sensor (clean with sandpaper) #10 p58
unit must be grounded (check outlet with circuit analyzer) #12 p58
Sequence flow chart p59
Rough starts = ignition failure p60
Troubleshoot chart - ignition failure p62

Mar 12, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

Mr heater 45000btu is flashing system lockout failed to detect or sustain flame.


check flame sencor is clean and connections are tight clean ignitor , seeif thie helps or jump out pressure switch see if it lights

Jan 15, 2011 | Mr. Heater Natural Gas Garage Heater -...

1 Answer

What are the carrier 8000ts led error codes?


They are listed inside the front panel of the main unit.

LED CODE

EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST

DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY

THE NUMBER OF LONG FLASHES.

STATUS

11 NO PREVIOUS CODE - Stored status code is erased automatically after 72

hours. On RED LED boards stored status codes can also be erased when power

(115 VAC or 24 VAC) to control is interrupted.

12 BLOWER ON AFTER POWER UP (115 VAC or 24 VAC) -Blower runs for 90

seconds, if unit is powered up during a call for heat (R-W closed) or R-W opens

during blower on-delay.

13 LIMIT CIRCUIT LOCKOUT - Lockout occurs if the limit or flame rollout switch is

open longer than 3 minutes.

- Control will auto reset after three hours. - Refer to #33.

14 IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34.

21 GAS HEATING LOCKOUT - Control will NOT auto reset.

Check for: - Mis-wired gas valve -Defective control (valve relay)

22 ABNORMAL FLAME-PROVING SIGNAL - Flame is proved while gas valve is

de-energized. Inducer will run until fault is cleared. Check for:

- Leaky gas valve - Stuck-open gas valve

23 PRESSURE SWITCH DID NOT OPEN Check for:

- Obstructed pressure tubing. - Pressure switch stuck closed.

24 SECONDARY VOLTAGE FUSE IS OPEN Check for:

- Short circuit in secondary voltage (24VAC) wiring.

31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than

five minutes, inducer shuts off for 15 minutes before retry. Check for:

- Excessive wind - Proper vent sizing - Defective inducer motor

- Low inducer voltage (115VAC) - Defective pressure switch

- Inadequate combustion air supply - Restricted vent

- Disconnected or obstructed pressure tubing

- Low inlet gas pressure (if LGPS used)

If it opens during blower on-delay period, blower will come on for the selected

blower off-delay.

33 LIMIT CIRCUIT FAULT - Indicates a limit, or flame rollout is open. Blower will

run for 4 minutes or until open switch remakes whichever is longer. If open

longer than 3 minutes, code changes to lockout #13. If open less than 3 minutes

status code #33 continues to flash until blower shuts off. Flame rollout switch

requires manual reset. Check for: - Restricted vent

- Proper vent sizing - Loose blower wheel - Excessive wind

- Dirty filter or restricted duct system.

- Defective blower motor or capacitor. - Defective switch or connections.

- Inadequate combustion air supply (Flame Roll-out Switch open).

34 IGNITION PROVING FAILURE - Control will try three more times before lockout

#14 occurs. If flame signal lost during blower on-delay period, blower will come

on for the selected blower off-delay. Check for: - Control ground continuity

- Flame sensor must not be grounded

- Oxide buildup on flame sensor (clean with fine steel wool).

- Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal).

- Gas valve defective or gas valve turned off - Manual valve shut-off

- Defective Hot Surface Ignitor

- Low inlet gas pressure

- Inadequate flame carryover or rough ignition

- Green/Yellow wire MUST be connected to furnace sheet metal

45 CONTROL CIRCUITRY LOCKOUT Auto-reset after one hour lockout due to;

- Gas valve relay stuck open - Flame sense circuit failure

- Software check error

Reset power to clear lockout. Replace control if status code repeats.

If status code recall is needed, briefly remove then reconnect one main limit wire to display

stored status code. On RED LED boards do not remove power or blower door before initiating

status code recall. After one status code recall is completed component test will occur.


Thanks for Choosing FixYa.


Kelly

Oct 05, 2010 | Heating & Cooling

2 Answers

Codes for model 335B Raypack Gas Heater


Codes should be found inside of the cabinet in the uper left corner.
If they are not there, here are the basics

EOL = Testing mode
BDI = BOARD FAILURE
EEP = MEMORY CHIP FAILURE
PRS = PRESSURE SWITCH FAILURE
HL1+HL2 = HIGH LIMIT EXCEEDS 135F
SPR = AUXILLIARY INPUT FAILURE
ROL = ROLL OUT SENSOR TRIPPED
SNS = TEMPERATURE BELOW 36 OR ABOVE 110F
FFL = FALSE FLAME SIGNAL
GCO + GVC = POWER TO GAS PV OR MV WHEN NOT SUPPOSED TO BE
FAN = AIR SWITCH OR FAN FAILURE
TAB = TAB FOR LO NOX NOT BROLEN OFF OR AIR PRESSURE SWITCH FAILURE
ILO = PROPANE GAS LOCKOUT AFTER 90 IGNITION TRIAL
IGN= LOSS OF FLAME OR FLAME SIGNAL

Sep 12, 2010 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

1 Answer

I have aan armstrong model uhpa145al-3 commercial heater that sits in high in the cieling of a warehouss. the board flashes twice which the label says means system lockout or failure to sustain flame ....


Flame sensor would be my first diagnosis. Take it out and clean it with some emery cloth or some light grit sand paper and put it back in should be fine just needs to be cleaned.

Jan 21, 2010 | Heating & Cooling

1 Answer

Armstrong upflow,unit works intermittent problem,call for heat nothing happens,error code of 5 blinks then 6 blinks. i have no manuel, and the panels dont have the codes on them. anyone have access to the...


Armstrong

FAILURE CODES

LED Status Fault Description
Off
No Power to the System Control

Steady Flash (11 or more flashes with no pause)
Normal Operation (Standby or call for heat)

2 Flashes
Pressure Switch Closed When It Should Be Open

3 Flashes
Pressure Switch Stuck Open 30 Seconds or Longer After Call for Heat (System in 5-minute delay mode before next call for heat). On/off switch in "off" position during a call for heat will generate this code.

4 Flashes
Open Limit Switch or Limit Switch Circuit

5 Flashes
Flame Sense Signal Sensed Out of Proper Sequence

6 Flashes - pause - 1 Flash (see Note 1)*
Soft Lockout Type 1 (Failure to light within 4 trials for ignition)

6 Flashes - pause - 2 Flashes (see Notes 1 & 2)*
Soft Lockout Type 2 (Flame sense lost during run)

6 Flashes - pause - 3 Flashes (see Notes 1 & 2)*
Soft Lockout Type 3 (Pressure switch opened during run)

6 Flashes - pause - 4 Flashes (see Notes 1 & 2)*
Soft Lockout Type 4 (Limit or limit circuit opened during run)

6 Flashes - pause - 5 Flashes (see Note 1)*
Soft Lockout Type 5 (Flame has gone away after Error Code 5)

6 Flashes - pause - 7 Flashes (see Note 1)*
Soft Lockout Type 7 (Self-check failure)

10 Flashes* - SV9520H8034 only
Line Input Voltage Polarity Reversed

Dec 12, 2009 | Coleman Heating & Cooling

1 Answer

Meaning of rudd furnace trouble codes


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

Dec 12, 2009 | Heating & Cooling

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