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Heater wont come on I manually push in contactor and it runs for a minute or so and shuts off.Is it the high limit switch?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Ready heater will run then shuts off

Change out the thermocouple.

Posted on Oct 21, 2008

  • 15 Answers

SOURCE: electric space heater contactor won't stay latched

Jumpered the bimetal thermostat and everything worked smoothly. Tried to clean contacts in thermostat with no luck, so ordered a replacement. At least it was cheaper than the contactor.

Posted on Dec 12, 2008

muttandjeff
  • 359 Answers

SOURCE: Rollout Limit Switch Keeps Tripping

have someone check the gas presure most likely too high no more than 11

Posted on Dec 17, 2008

geterrollin
  • 277 Answers

SOURCE: heater runs for about 30

Inspect the photocell lens, if it doesn't sense a flame or malfunctions it will shutdown and 30 seconds is about when it should flame after preheat, hope this helps

Posted on Jan 22, 2011

SOURCE: heater goes on but after running its cycle goes off pos high limit

Check the flue, and supply vents and return air filter, obstruction of air is why unless you have a cracked exchanger.

Posted on Oct 31, 2012

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1 Answer

No power, great lakes hot tub hear click like breaker tripping,down below in hot tub could it have bad internal fuses?


Charles, sorry I just re-read your question. The click you hear is likely a contactor if its an older model, and if it clicks its probably not the problem, just means its getting voltage. I would start by looking at the high limit switch. Look for a little reset button. A high limit switch trips when it senses high temperature, often from heater trying to run with Inadequate water flow.

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Heater runs about 1 minute and shuts off


high limit switch is open. it will open it water inside header gets over 135 degrees, or you have a faulty high limit switch

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Shuts off on its own after a short running time


You more than likely have a high temp sensor opening up the circuit when it reaches its limit. It would have to cool down to close again. Either that high temp sensor is bad or your heater is getting too hot.

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1 Answer

Fan blows, but does not heat. Is there a fuse?


If the fan runs all the time, then it is possible that the high limit control needs to be reset. Some can be reset and some are autmotaic.

Turn Power off
-Turn thermostat up
Turn power back on, if you here the contactor pull in
then your problem is probably a limit switch that
needs to be reset or replaced, thats if you have no heat.

These limit switches can be located inside the main
control panel or located on the outside of the heater

Jan 18, 2010 | Pelonis Disc Furnace Heater

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I have a dyno glo rmc-fa100dlx forced air heater. It will light and work for a few minutes, up to about 5, then it will stop heating and the fan will keep blowing. any ideas? thanks!


If the unit comes on and runs but then shuts down, that sounds like an indication of a high limit trip.

Most, if not all, furnaces have high limit switches that keep a constant check on the temp inside the furnace or air handler. On most systems, once this high limit switch has been made (got to hot), the limit switch breaks control voltage to the heating device (strips, gas, fuel, etc.etc..). The blower motor continues to run until the high limit has dropped in temp and reset itself.

On some models, the high limit is a manual reset, meaning you need to reset the switch yourself or shut the unit off and then back on to reset it.


Check all filters and replace as necessary. Check the coils and fan blades for dirt build-up and cleanliness. Check motor belt (if applicable). If all these fail to solve the problem, then your issue either lies within the blower motor itself not moving enough air for proper heat transfer. Or the high limit switch itself is failing.

Jan 09, 2010 | Heating & Cooling

1 Answer

Rollout Limit Switch Keeps Tripping


have someone check the gas presure most likely too high no more than 11

Dec 14, 2008 | Coleman Propane Forced Air Heater...

1 Answer

Electric space heater contactor won't stay latched


Jumpered the bimetal thermostat and everything worked smoothly. Tried to clean contacts in thermostat with no luck, so ordered a replacement. At least it was cheaper than the contactor.

Dec 07, 2008 | Fahrenheat Ceiling-Mount Industrial Heater...

1 Answer

Wont stay lit


go to this site www dot desatech dot com. Here you'll find parts to repair your heater. a propane heater uses a millivolt generator to sense the flame. along it's cappilary are two push on spde connectors. these connect to the high limit temperature sensor which is mounted on the flame backplate of your heater. to see if it is the high limit shutting down your heater, jumper across the two spade connectors. if the heater stays on, this is your problem. if the flame still goes out, then the millivolt generator is shot.

Nov 09, 2007 | Coleman 5075751 Utility Heater

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BLOWER FAN WONT SHUT OFF WHEN THERMOSTATE IS OFF


The compressor coming on when the contact is pushed is o.k. they all do that. As for the blower fan not shutting off, some brands (Payne for example) the heating fan relay is a n.c. (normally closed ) relay. so if the time delay relay or thermal link are bad or not connected, the fan will blow even when it is turned off.

Aug 19, 2007 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Wont stay running


Reddy suggests: 1. Propane supply may be inadequate 2. High surrounding air temperature causing thermal limit device to shut down heater 3. Restricted air flow 4. Damaged fan 5. Excessive dust or debris in surrounding area solutions are: 1. A) Refill tank B) Provide additional and/or larger tanks. 2. This can happen when running heater in temperatures above 85° F (29° C). Run heater in cooler temperatures 3. Check heater inlet and outlet. Remove any obstructions 4. Replace fan. 5. Clean heater. could not get manual for your exact model but if you want manual for RLP 125 then; http://12.153.20.74/manuals/113893-01C.PDF appears to be the same beast. Hope helps :)

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