Mr. Heater 75000 but big maxx, it calls for heat but the igniter doesn't click. gas is there but the igniter won't make the clicking noise.

Question edited for a lot more clarity.

From the maker.

Fuel Conversion Kit NG to LP

Mr. Heater https://www.mrheater.com > fuel-conversion-kit-ng-to...

Fuel Conversion kit for changing NPP overheads to LPP and from NG to LP. Kit includes all necessary labels and components required for the complete ...
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Mr. Heater ventless wall heater convert to LPG

The Garage Journal https://www.garagejournal.com > ... > Heating and A/C
Mr Heater supports converting the Big Maxx 50 and 80 from NG to LP and sells a kit with the orifices for $25. https://www.mrheater.com/big-maxx-fuel- ...

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Check all electrical connections at board check any moles plugs pins etc. if you have power going to board and no status light sounds like a bad board......

check the pressure switch and the snap disks

The capacitor in that unit is for starting the motor that drives the blower fan. It has no impact on the ignition of the gas burner. On the control board, there is a light that should be flashing, can you tell us how many times it is flashing?

Your pressure switch may not be activating (ie closing and making contacts) This means you could have a blocked flue, clogged pressure switch tube or a bad pressure switch. The pressure switch is a safety feature to ensure your exhaust is not blocked and operating correctly. Find owners manual. Look at trouble shooting section. Open cabinet and look for error code light. If blinking 3 times, try "jumping" the pressure switch. To jump pressure switch you need to clear code be turning off power. When the unit/thermostat calls for heat the power vent fan starts first, this is when you need to jump the pressure switch. You need to do this in sequence. That is the unit first starts the power vent exhaust thus activating the pressure switch allowing the ignition cycle to the burners and heat. So the power vent fan needs to start first BEFORE you put the jumper on to bypass the pressure switch. Once the jumper is on it will call for ignition after approx 30 seconds. If ignites your problem is one of the 3 stated at the opening of this paragraph

is this a new heater or 2ndhand ???

You may very well be right because if the induced draft motor won't come on then the heatin cycle stops there. It makes me wonder about the board because of it doing the same thing even if it's not calling for heat. Thanks.

Hi,
Probably your ignitor is bad...

Here is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting

heatman101

the vent pressure switch will have a rubber type hose off it to the combustion fan housing. pull the hose off and poke the conector with a paper cilp or wire to make sure it is not plugged at the housing. make sure the vent fan is running and jumper the switch if it comes on replace the switch if not look else where for your problem.a volt meter is a great tool . voltage across a switch means it is open and no voltage means its colsed. i should say to also check your venting as it maybe blocked. there is no reset