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Troubleshooting
Integrated Modules
Integrated Modules
4-15
#826498 - Revision B - December, 2016
Testing of Gas Pressure
Testing gas supply pressure to a unit is a critical tool in properly diagnosing a problem. Gas supply pressure issues
are common and many times are the root cause of reoccurring issues. On the modules each burner has an individ-
ual spark module. On the CG152TF/S there is no fuel/air ratio adjustments. On the MM15TF/S there is a fuel/air
adjustment set at the factory. Intermittent sparking issues, flame quality issues, and ignition issues are almost
always related to gas supply or supply regulator issues. Different sized burner assemblies are affected in different
ways by gas issues. Gas pressure must be checked by the Wolf proscribed method to produce results that can be
used to diagnose a specific issue.
Natural Gas Specifications
Supply pressure to inlet of unit regulator must be between a minimum of 7” WC and a maximum of 14” WC.
Outlet of regulator must be 5” WC (+) 0.5” WC (-) 0.0” WC.
Maximum pressure drop from Low Flow to Maximum Flow must be less than 0.5” WC
Liquid Propane (LP) Specifications
Supply pressure to inlet of unit regulator must be between a minimum of 11” WC and a maximum of 14”WC.
Outlet of regulator must be 10” WC (+) 0.5” WC (-)0.0” WC.
Maximum pressure drop from Low Flow to Maximum Flow must be less than 0.5” WC.
Connecting Manometer to CG152TF/S
To check pressure on a CG152TF/S the unit must be uninstalled, and the burner pan removed. Once the burner
pan is removed, loosely reassemble burners. Disconnect the Main gas tube from the 9.2k orifice holder and connect
manometer to Main gas tube. Set the burner on High.
PROBLEM
POSSIBLE CAUSE
TEST / ACTION
D. NO SPARK AT BURNER
ASSEMBLY(S)
E. POPPING
NOISE
AT
BURNER ASSEMBLY DUR-
ING SIMMER MODE
F. FLAME
APPEARANCE
ON
BURNER ASSEMBLY(S)
1. Tall flame
2. Yellow flame
3. Pulsing flames
G. NO KNOB OR LIGHTED
KNOB DISPLAY
No Power (All burners)
Igniter Wire disconnected or damaged
Loose or damaged wire to spark module
Defective 1 point spark module
Burner assembly damaged or dirty with
food debris
Burner assembly cracked or warped
Supply gas impurities
Port holes in burner assembly not to speci-
fication or damaged/dirty
Incorrect gas orifices
Gas pressure
Secondary gas regulator within 10 feet of
unit regulator
Unit regulator damaged
All light displays are dim.
No Display Lights
Check outlet and circuit breaker
Replace igniter wire
Reconnect wire or repair wire harness
Replace 1 point spark module
Replace/clean burner assembly
Replace burner assembly
Especially common with LP gas
Replace/clean burner assembly
Check stamp number on orifices
Check gas pressure using a manometer
Secondary regulator and unit regulator should
be at least 10 feet apart
Check gas pressure using a manometer
Issue with Neutral side of light circuit
Check voltage to Display Light board. Replace
Display Light board.