Black Stone PRO 1820, Owner'S Manual

Section 02

GRIDDLE GAS FLOW

SYMPTOMS

01.  A flame is coming out of the air gate.

SYMPTOMS

01.  Burner flames are yellow or irregular.

POSSIBLE CAUSES

SOLUTION

01.  Something is blocking the venturi 

in the burner tube. This is not 
allowing the propane to flow 
through the burner, causing the 
flame to back out the air gate.

Clean the burner assembly to remove 
the obstruction. (Please reference the 
Cleaning Your Griddle section of the 
Care & Maintenance chapter.)

POSSIBLE CAUSES

SOLUTION

01.  Something is blocking the 

air gate for the burner. This is 
blocking oxygen from mixing 
with the propane correctly to get 
healthy flames.

Check the air gates in your burner. If 
you have adjustable air shutters over 
your air gates, make sure that they are 
completely open. If your burners have 
bug shields, clean any spider webs, soot, 
or debris off the bug shield. Clean any 
other obstructions out of air gates.

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Troubleshooting

BURNER FLAME 

PATTERN

Your griddle’s burners are designed 

to mix oxygen and propane at a 

rate that allows for optimal flames. 

Should the burner’s holes, air 

gate, or venturi get blocked, it will 

affect the propane and air mixture, 

causing low or inconsistent flames, 

or flames coming from the air gate. 

Healthy flames might have a few 

flickers of yellow color 

❶

, then a 

dark blue color 

❷

, followed by a 

vibrant blue by the burner tube 

❸

. 

❶

❷

❸

POSSIBLE CAUSES

SOLUTION

01.  United States regulations require 

that all griddle regulators contain a 
flow limiting device for consumer 

safety. This device measures the 

amount of propane going through 
the regulator to ensure the levels 
are safe. If the flow rate through the 
regulator is too high (a symptom 
of a large leak), the flow limiting 
device will trigger, restricting the 
flow of propane to reduce the 
chance of a dangerous fire. This 

safety system can accidentally be 

tripped by opening a propane tank 
too quickly or opening the propane 
tank when a burner knob is not in 
the off position. 

This safety system can be reset by 

moving the burner knobs to the off 
position, closing the propane tank, 
and disconnecting the regulator from 
the propane tank. Wait five minutes 
to allow the pressure to dissipate, 
then reconnect the regulator to the 
propane tank and slowly open the 
tank (it should take a full 30 seconds 
to open half a turn). Ignite your 
griddle as described in the Care & 
Maintenance chapter. 

02.  LP gas cylinder is empty or low.

Refill or replace the propane tank.

03.  Obstructions in the burner, gas jets, 

or fuel rail.

Clean the burner, jets, and gas 
hose. (Please reference the Cleaning 

Your Griddle section of the Care & 

Maintenance chapter.) 

04.  Regulator stuck in safety position.

Contact customer service for replace-
ment parts.

SYMPTOMS

01.  Griddle will not achieve a high heat or heats unevenly.

02.  Burner flames start strong, then immediately drop to low even when 

burner is set to high position.

03.  Flame height drops when a second burner is lit.

04.  Flames do not extend the full length of the burner, or only run on one 

side of the burner.

05.  Burner flames are inconsistent. 

Troubleshooting

Model 1820 

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 | Owner’s Manual | Model 1820

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