Boiler Sparks But Will Not Light

Schedule Service Today

We Specialize in Service

logo bryant

Boiler sparks but will not light. Boilers are a fickle mistress at times. Boiler ignition circuits have been known to be elusive in its diagnosis.

Boiler sparks but will not light is a common boiler problems on steam boilers.  A simple problem is a stuck low water cut off control.  Tigger handle a few times and it may clear the gunk out of the float switch allowing for the float to free itself for proper operation of ignition circuit.

There are 2 types of ignition circuits on steam boilers. 1 is the infamous standing pilot and 2 is the Boiler spark ignition type.  Spark ignition gives that tic tic sound when sparking for ignition.

Basically the same sound your home stove makes when turning on the gas. Then your standing pilot gives the distinctive swoosh sound when igniting.

However on a standing pilot boiler if the pilot goes out from wind or a defective thermocouple then no heat will be present. Defective Baso valves can also play a role in no heat scenario on a standing boiler piloted system.

Back to spark ignition circuits, a boiler that sparks and will not light can be contributed to a defective spark control board.  Don’t be fooled.  Let me explain, in order for a spark ignition circuit to operate properly a solid ground needs to be sensed.

On the pilot assembly there is a ground that rectifies back to the spark control board.  Make sure connections are tight.  Also if a wire is attached to burner where pilot assemble is attached remove wire and sand the spot where ground wire attaches and reconnect.  Many times that quick fix will return your heat to normal.

The gas valve especially honeywell gas valves have a ground terminal spade connector on its valve body. Sometimes a ground added to the gas valve to the spark board ground burner also will return your heat to normal.

Thanks for reading.

 

Only $99.00

Residential Furnace Maintenance normally $139.95

Receive Special Discount Coupons by entering
your email in the box below:

    Special Price

    Only $129.00.

    Residential boiler maintenance normally $189.00

    Receive Special Discount Coupons by entering
    your email in the box below:

      Special Price
      icon

      3 Chicago Locations to Serve You

      If you live in Chicago or the surrounding suburban area we can help your repair or install your new HVAC equipment.

      map

      Need Service?

      Contact Us
      Today!

      Chicago

      1025 W 79th St
      Chicago, IL 60620

      (312) 243-9896

      South Chicago

      4912 W 135th St,
      Crestwood, IL 60418

      (708) 388-2247

      Oak Forest

      16830 Forest Ave.
      Oak Forest, IL 60452

      (708) 560-5410

        Is this an HVAC service emergency?

        [saswp-reviews]