
INSTALLATION AND OPERATION MANUAL AND PARTS LIST,
MODELS: STHE-7-TGG, STHE-12-TGG, STHE-16-TGG
PART NUMBER 10225R0
32
2010-09-07
6.0 TROUBLESHOOTING
(Continued)
ADJUSTMENTS
All units are adjusted at the factory. In case of operation problems at initial installation, check
type of gas supply and manifold pressure and compare it with information on the rating plate.
BURNER TROUBLESHOOTING GUIDE
PROBLEM
PROBABLE CAUSE
REMEDY
1.
B
URNERS DO NOT COME ON
a. Gas supply is off.
Locate supply line and turn on
b. Power switch is off.
Locate switch in cabinet and turn on
c. Probe not sensing water level.
Clean probes, check wiring
d. Ignitor not functioning.
Check ignition module, relay
e. Combination gas valve not
opening.
Check that control knob is in the ON
position, check that 120 volts is at the gas
valve.
2.
B
URNERS PRODUCE CARBON
DEPOSITS
a. Incorrect orifice size.
Check size and correct
b. Incorrect gas supply.
Check size and correct
c. Incorrect gas pressure.
Check gas pressure at manifold, correct if
necessary
3.
F
LASH BACK
a. Burning inside mixer tube
Reduce primary air
b. Incomplete combustion
Increase burner input
c. Sooting of burner
Increase primary air
d. Mislocated ignitor
Adjust ignitor
WARNING: At least twice a year, have an authorized service person
clean and adjust the unit for maximum performance.
WARNING: Adjustments and service work may be performed only by
a qualified technician who is experienced in, and knowledgeable with
the operation of Commercial Gas Cooking Equipment. However, to
assure your confidence, contact your authorized service agency for
reliable service, dependable advice or other assistance and for
genuine factory parts.