Big Maxx Garage heater problem

[LEVKO]

i have a 75 k Natural gas big maxx. the vent fan starts,the electronic ignitor starts.(the spark is minuscule ) the gas turns on, it doesnt light ,the unit then shuts off. How big of a spark does it need to ignite. could it be the ignitor or the unit the ignitor is plugged into.

 

[BillK]

I would not think it would need much of a spark to light the gas. Are you sure that the gas valve is working properly and actually allowing gas through ?

 

[CNGsaves]

Could be getting some "wet" gas in wintertime . . . ie more moisture. Do you have a drip leg on NG supply line to heater??

+1 to double check you have good NG flow that is dry gas. Good luck.

 

[LEVKO]

when ignitor turns on i used a long reach fire starter and sparked it. the gas ignited . it went thru a full heat cycle then shut off. When it was time to re start the same happened and had to manually re ignite the gas. This unit worked fine for a while, then this problem

 

[Basstracker34]

I'd call big maxx customer support. They've got a great reputation for customer service.

Take a picture of your install. Might help us diagnose an issue.

 

[chickenhauler]

I hate to jump the gun, but it's most likely your circuit board. After 3 years of flawless operation, mine went 2 weeks ago. Mine was visibly scorched behind the ignitor. Customer service shipped out a free replacement right away.

 

[dfiler2]

The position of the igniter can be fussy, check the manual and see what it says, It sounds to me like an igniter problem is most likely the issue.

 

[CNGsaves]

+1 to call to get diagnosis help from Big Maxx. Hope you don't have control board problem.

 

[LEVKO]

Thanks guys i pulled out the ignitor, repositioned the electrodes for the hundreth time and solved the problem, i think
thanks again

 

[LEVKO]

well that was a short lived victory. Ill have to try tech support.

 

[LEVKO]

Finally got hold of Mr Heater, they sent me out a new control board and now the unit works fine again. Guess what I was still under warranty, didnt even have to pay for shipping.

 

[Kamn]

I just had the pressure switch on my Big Maxx heater **** the bed the other day........only a year and a half old
replaced it and all is well again