Question about Heating & Cooling

1 Answer

I have a OM-22 and the high limit switch shorted out. Do you know where i can get one? And I have no lights on the control panel, is this normal or is there more damage? deyoung@tds.net

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 674 Answers

When your heater overheats the high limit should open (ie. infinite resistance). This shuts down the heater and gives an EE12 code. When the heater cools, the limit should reset itself (no resistance). Then if you haven't already turned the heater off, turn it off and then turn it back on and it should go. If the high limit doesn't reset, you can google Toyostove dealers and they should be able to get you one. I have also sent you an email. You should also make sure the fan cage is clear and that nothing else is blocking the air flow.

Posted on Oct 09, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Gas furnace short cycles 2 minutes or less. Multiple troubleshoot steps and replaced components - no help. Any advice?


I did not see that your indoor fan motor started. Near your indoor fan motor there is a temperature switch that is called the fan delay relay. On a temperature rise the relay shuts a contact that turns on the indoor fan motor. If the contact does not close the high temperature limit will shut the gas controls off like your getting. A fan delay relay also allows the fan to run a minute or so to carry away the remaining heat in the furnace and help cool the furnace down. The fan delay relay is normally mounted in a recessed area in the fire wall of the furnace plate. I have also seen them on the top of the furnace heat exchanger. Anyway, the fan delay relay will probably not be available on a sunday, so temporarily until parts are available, try turning the thermostat fan from auto to on and try the furnace again. By turning on the fan to on the high temp limit will not shut you down again.

I have had high temp limit change there trip points, but you said you bypassed it and did the same thing.

Another cause could be using the wrong type of air filter. The new pleated filters sold block to much air flow. If air mass flow rate drops the difference in temperatur go up and when the difference in temperature go up, it gets nearer the high limit and causes it to trip. All pleated filters drop normal air flow through ducts by at least 35%. To make your air duct system work properly use the what is called throw away filters which cost about 1/3 the cost of the pleated filter. Remember to either clean or change the throw away filter monthly to reduce dirt being drawn into your duct system.
Hope this helps.

Feb 13, 2015 | Heating & Cooling

1 Answer

Igniter isnt lighting


IF YOU LOST POWER WHEN FURNACE WAS RUNNING IT TRIPPED ROLLOUT SWITCHES AND POSSIBLY THE HIGH LIMIT . IN CENTER OF ROLLOUT SWITCHES IS A LITTLE RED BUTTON THAT YOU RESET . YOU CAN ALSO TRY FINDING HIGH LIMIT WITH POWER SHUT OFF TO FURNACE PULL BOTH WIRES OFF HIGH LIMIT AND USE PAPER CLIP TO JUMP BETWEEN THE TWO WIRES MAKE SURE YOU DONT SHORT OUT AGAINST ANY METAL WHEN YOU TURN BACK ON IF IT WORKS YOU NEED A NEW HIGH LIMIT SWITCH.

Jan 08, 2014 | Coleman 7990-319p Evcon Gas Furnace...

1 Answer

Hi i have 1990 buick lesabre limited and the service engine light is on and im getting 13 different codes i believe there a is a bad censor cause the rest of the codes but i dont know here are the codes...


First thing I would do is reset ALL the codes. Do you have your own code sensor OBD2? A soon as the check engine light comes on, pull over and shut off the car and then re-read the codes.
Let me know what you find.
Good Luck

Oct 27, 2013 | Cars & Trucks

1 Answer

1995 dodge ram 1500 318 motor it wont get fire where is the logic module located


Under hood,passenger side mounted on the firewall,but ...
Could be something else ,crank sensor or cam,or ign.rotor ect.
The module like 3 hundred bucks.Try this ,turn the key
on-off-on-off-on( without out hitting the starter) the check
engine light should begin to flash.
Here is a code list,may narrow down the problem.
Diagnostic Trouble Code Descriptions and service hints. Fault Code DRB Display Code Description. Service hints. 11 No Crank reference signal at PCM No Distributor reference signal detected during engine cranking. Check the circuit between the distributor and PCM. 12 Battery Disconnect Direct Battery input to PCM disconnected within last 50 ignition key-on cycles. Normal if battery has been disconnected, otherwise check battery power and ground connections. 13** No change in MAP from start to run No difference seen between the engine MAP reading and the barometric (atmospheric) pressure reading at startup. Indicates a problem with the MAP sensor vacuum system. 14** MAP sensor voltage too low or too high MAP sensor voltage output is outside the acceptable range. 15** No Vehicle speed sensor signal No signal received from the vehicle speed sensor during road load operation. 17* Engine is cold too long Engine temperature too high or too low while traveling. Check coolant level, radiator cap, temperature sensor, and thermostat. 21** O2S Stays at center O2S shorted to voltage O2 sensor does not detect rich or lean condition, or O2 sensor input voltage too high. DRB will indicate which side with dual sensors. The O2 sensor signal should fluctuate under normal conditions. 22** ECT sensor voltage too high or too low Engine Coolant temperature sensor input out of normal range. Check engine temperature sensor. 23** Intake air temp sensor voltage too high or low Intake air manifold temperature sensor is out of range. Check sensor. 24** Throttle position sensor voltage too high or low TPS sensor is out of normal range. 25** Idle air control motor circuits A short is detected in one or more of the idle air motor circuits. 27* Injector # control circuit Injector number # output driver circuit does not respond to the control signal. Check the affected circuit. 31** EVAP Solenoid Circuit Short or open in the EVAP solenoid circuit. Check for loose, broken, or shorted wire in the charcoal canister purge solenoid wiring and connectors. 32** EGR Solenoid circuit Short or open in the EGR solenoid circuit. Check for loose, broken, or shorted wire in the EGR valve wiring and connectors. Possible air fuel ratio imbalance not detected during diagnosis. 33* AC clutch relay circuit Short or open in the AC clutch circuit. 34* Speed control circuit or speed control switch always low or high An open or short in the speed control vacuum or vent circuits. Speed control switch input above or below normal range. 35 Radiator Fan low speed relay circuit Open or short in the radiator fan relay wiring. 37** Torque converter clutch solenoid CKT or Trans temp sensor too high or low Open or short in CKT wiring or connectors. Voltage out of range at transmission temperature sensor input. See NOTE #1 below 41** Generator field not switching properly Open or short in the generator (alternator) field control (regulator) circuit. This indicates a problem with the charging circuit and the fault is set when the battery voltage from the ASD relay falls below 11.75 volts. Wiring, connectors, fuses, and the ASD relay should be checked. A shorted battery cell can also trigger this fault. 42* Auto shutdown relay circuit Open or short in the ASD relay wiring or connectors. 43** Ignition coil circuit # Open or short in number # coil circuit. Indicates that the ignition coil's peak primary circuit current is not achieved with the maximum dwell time. 44* Battery temp sensor volts out of range An open or short in the engine coolant temperature sensor circuit or a problem in the PCM's battery temperature circuit. 45* Trans OD solenoid circuit Transmission OD solenoid circuit failure. Open or short in the transmission overdrive solenoid circuit. 46** Charging system voltage too high Battery voltage sense input above target charging voltage during engine operation. Computer is indicating that the battery voltage is not being regulated. 47** Charging system voltage too low Battery voltage sense input above target charging voltage during engine operation. Also, no significant change in battery voltage was detected during a test of the generator output. 51** System lean L-Idle Adap at rich limit or lean R-Idle Adap at rich limit O2 sensor signal indicates lean air/fuel ratio during engine operation. The computer ran the mixture to the rich limit of programming, but the O2 sensor still indicated a lean condition. L or R indicate left or right side O2 sensor. Fuel pressure problems can lean the mixture and set this fault. 52** System rich L-Idle Adap at lean limit or rich R-Idle Adap at lean limit O2 sensor signal indicates rich air/fuel ratio during engine operation. The computer ran the mixture to the lean limit of programming, but the O2 sensor still indicated a rich condition. L or R indicate left or right side O2 sensor. Faulty ignition components, high or low fuel pressure, or leaking injectors can set this fault. 53* Internal PCM failure or PCM SPI comm failure An internal PCM failure or PCM communications failure has been detected. 54* No cam sync signal at PCM No fuel sync (camshaft signal) detected during engine crank. No camshaft position sensor signal was received from the distributor. Problem with the distributor synchronization circuit. 55 N/A End of message code. A DTC 55 is used to end all DTC messages. This code does not show on the DRB tool and indicates a completion of the stored codes on the Malfunction Indicator Lamp (check engine lamp). 62* PCM failure SRI miles not stored Unsuccessful attempt to update Service Reminder Indicator miles in the PCM EEPROM (memory). 63* PCM Failure EEPROM write denied Unsuccessful attempt to write and EEPROM location by the PCM. Controller failure, check the PCM. This code can be set when attempting an unauthorized reprogram of the PCM. 71** Aux 5V signal voltage low The auxiliary 5 volt supply output voltage is low. The 5 volt output signal is not reaching the required voltage level. 72** Catalytic Converter efficiency failure The catalytic converter is not converting emissions in the proper ratio.

Feb 22, 2013 | Cars & Trucks

1 Answer

Honeywell S9200 causes transformer death when limit switch attached


If jumping 1 to 7 is blowing the fuse it sounds like a bad board.Not familiar with those but as you said, normally closed limit would be the same as a jumper. Check your dip switches first but I'm thinking bad board/direct short.

May 24, 2017 | Honeywell Heating & Cooling

1 Answer

Can not get fryer to turn on. when you flip the switch to the on position, the high limit light flashes and go back off emediatly, and no power comes back on. i can here a click in the board behind the...


The High Limit is a self resetting thermostat that acually works like an oven control. If the fryer is too hot it will cut off the gas burner valve voltage:
OEM PN is 00-854453
Original PN VUL854453

Source 1
http://www.3wire.com/webstore/parts/PartSearchResults.aspx?searchText=Switch+High+Limit&mfrCode=VULCAN
$98.50
Source 2 Must log in.. new account
http://www.a1service.com/vulcan/vulcanlimit.htm
$90.20

The 854453 number comes up often in the part search for the high limit.
The high limit contacts can be checked and reading the NO and NC terminals. This control / switch is normally closed until opened by heat at 450 Deg F.

Thanks for Choosing FixYa,

Kelly

Sep 28, 2010 | Vulcan GRD45 Deep Fryer

1 Answer

The dryer turns on and runs, but it is not heating up...


The problem is either the Safety Thermostat TH2, High-Limit Thermostat TH3, or the Heating Element itself. Here's what you should do find which among is the culprit.

Use a putty knife blade or similar tool to push and release the clips holding the top panel to the front panel. Insert the putty knife between the top panel and the front panel as shown at about 2 and 3/4 inches from the edges then push in until the clips are released then lift the top panel off.
9256748.jpg

Open the door then remove the two screws at the bottom of the door opening as shown.
a83846f.jpg


Remove the two screws from the upper side of the front panel then pull the panel out and disconnect the Door Switch connector.
a2a4fae.jpg

Once the front panel is removed, you'll see the Heater Box at the bottom right hand side of the cabinet. Remove the cover and you'll see three sets of the terminals on the left side of the Heater Box. The set of three terminals is the Heating Element, the middle set is the Safety Thermostat TH2, while last set is High-Limit Thermostat TH3.
92b5568.jpg

Using a multimeter, set to the lowest Ohm scale (R X 1), check the continuity of the Safety Thermostat TH2 and High-Limit Thermostat TH3 then the resistance between the middle terminal of the Heating Element and the other two terminals.

The Safety Thermostat TH2 and the High-Limit Thermostat TH3 are both normally closed and any discontinuity (open circuit) found indicates that the component has failed. It is necessary to replace both the Safety Thermostat TH2 and the High-Limit Thermostat TH3 if one of them has failed. The Safety Thermostat TH2 is likely to fail as a result of the High-Limit Thermostat TH3 failure.

The normal resistance between the middle terminal (2) and the upper terminal (1) is 18 ohms to 22 ohms while between the middle terminal (2) and the lower terminal (3) is 9 ohms to 11 ohms. Replace the Heating Element if an infinite resistance (open circuit)reading is obtained in any the measurements.

You may take the Heating Element out then thoroughly check it visually for any obvious coil discontinuity if you don't have a the meter to check the continuity of Safety Thermostat TH2 and the High-Limit Thermostat TH3 and the resistance of the Heating Element. It will be obvious if the Heating Element has a broken coil.

The problem lies in either of the Safety Thermostat TH2 or the High-Limit Thermostat TH3 if the Heating Element coils is intact. Bypass both the Safety Thermostat TH2 and the High-Limit Thermostat TH3 then reconnect the Door Switch connector. Run the dryer and it should heat by now to indicate that either the Safety Thermostat TH2 or the High-Limit Thermostat TH3. Otherwise, it is a totally different story. Please let us know if that is the case.

Warning! Do not use the dryer with the Safety Thermostat TH2 and the High-Limit Thermostat TH3 bypassed due to fire hazards.

Aug 11, 2010 | LG DLE2532W Electric Dryer

1 Answer

Lx30h hobart dw. booster will not turn on. element good,hi-limit is good, changed temp probe, still no power to contactor


The booster heat control circuit is controlled by the relay board. Visually check for loose or burnt relay contacts...
You will see the booster LED light when it calls for heat. Some newer machines have a second high limit on the right hand side of the booster tank.
It may be your control board is configured for low temp with no booster. When you power up, the display should say LX30H. If not
Pull open the upper drawer, place a magnet over the door interlock switch.

CAUTION, 220 volt power is present. be carefull what you touch.

on control board, short J5-1 and J5-2, then power up. You are in factory setup. press select on the control board to see each option on the front panel., press up arrow on control board to step up through options for each step. when done, press the off button on front panel. remove short and start up normally. With the magnet in place, AND THE DOOR CLOSED, run the machine and observe the relay board status lights.
If you want to adjust the temp set points, with the machine off, press and hold the hidden key behind the front panel logo, and press select on the control board.. Or on power up, hold the wask key..Same to adjust options as above. Press off to exit.

Jul 04, 2009 | Hobart 24 in. LXIC-5 Built-in Dishwasher

1 Answer

I have a 2005 chrysler 300 touring edition and while driving a red blinking lightning bolt symbol came on, om the left side of my dash. On the right side a yellow ESB symbol came on. Do you know what this...


the red light means power limited. the yellow ESP light is part of the traction control system.. if you were on slippery ground its a normal thing to happen if the tires spin

Jan 20, 2009 | Chrysler 300 Cars & Trucks

1 Answer

Kernmore elite He3t


Well there is one of two control boards that is malfunctioning, most common is the Machine (or Main) control board, there is also a display pc board in the control panel, but i have had few problems with that control. Unfortunately the main board is $300.

Sep 04, 2007 | Kenmore Elite 45986 Front Load Washer

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2550 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...